{ "as_of": "2026-10-28", "entity": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" }, "recheck": { "items": [ { "claim": { "claim": { "claim_id": "claim-del-valle-boat-inspection", "evidence_ids": [ "evidence-del-valle-boat-inspection", "evidence-del-valle-ebrpd-boat-inspection", "evidence-ebrpd-mussels-del-valle-inspection" ], "predicate": "boat_inspection_required", "spatial_scope_ids": [ "scope-lake-del-valle" ], "subject_id": "lake-del-valle", "temporal_scope": null, "value": true }, "evidence": [ { "claim_id": "claim-del-valle-boat-inspection", "evidence_id": "evidence-del-valle-boat-inspection", "notes": "", "observation_id": "observation-del-valle-boating-swimming", "stance": "supports" }, { "claim_id": "claim-del-valle-boat-inspection", "evidence_id": "evidence-del-valle-ebrpd-boat-inspection", "notes": "", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "stance": "supports" }, { "claim_id": "claim-del-valle-boat-inspection", "evidence_id": "evidence-ebrpd-mussels-del-valle-inspection", "notes": "", "observation_id": "observation-ebrpd-mussels-program-scope", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page lists two swimming beaches, lifeguards during posted periods, boat rentals, and a public launch for boats of any size; it warns that boaters must comply with the Invasive Mussel Prevention Program and mandatory inspections.", "observation_id": "observation-del-valle-boating-swimming", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [], "content": "At retrieval, the page stated that a boat launched at Contra Loma would be quarantined for 30 days from inspected lakes including Del Valle; vessels must be cleaned, drained, and dried, and boat bands are honored only by the lake that issued them. It also requires campground guests with watercraft to complete inspection before campground check-in.", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "EBRPD requires watercraft inspection at Contra Loma, Del Valle, Lake Chabot, Quarry Lakes, and Shadow Cliffs. Covered craft include boats, kayaks, canoes, sailboats, inflatable craft, and every form of floating board. Campers with watercraft must complete inspection before campground check-in.", "observation_id": "observation-ebrpd-mussels-program-scope", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-invasive-mussel-program" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-invasive-mussel-program" } ], "subject": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" } }, "result": { "answerability": "needs_current_check", "claim_id": "claim-del-valle-boat-inspection", "evidence_ids": [ "evidence-del-valle-boat-inspection", "evidence-del-valle-ebrpd-boat-inspection", "evidence-ebrpd-mussels-del-valle-inspection" ], "explanation": "volatile input has no trip-date-bounded observation", "input_id": "claim-del-valle-boat-inspection", "source_ids": [ "source-reserveamerica-del-valle-overview-110003", "source-ebrpd-del-valle-park-page", "source-ebrpd-invasive-mussel-program" ] } }, { "claim": { "claim": { "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine", "evidence_ids": [ "evidence-del-valle-ebrpd-contra-loma-quarantine", "evidence-ebrpd-mussels-contra-loma-quarantine" ], "predicate": "cross_lake_boat_quarantine", "spatial_scope_ids": [ "scope-lake-del-valle" ], "subject_id": "lake-del-valle", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": { "duration_days": 30, "restricted_destination": "Lake Del Valle", "trigger_lake": "Contra Loma Reservoir" } }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine", "evidence_id": "evidence-del-valle-ebrpd-contra-loma-quarantine", "notes": "", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine", "evidence_id": "evidence-ebrpd-mussels-contra-loma-quarantine", "notes": "", "observation_id": "observation-ebrpd-mussels-contra-loma", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the page stated that a boat launched at Contra Loma would be quarantined for 30 days from inspected lakes including Del Valle; vessels must be cleaned, drained, and dried, and boat bands are honored only by the lake that issued them. It also requires campground guests with watercraft to complete inspection before campground check-in.", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "The current notice reports golden mussels at Contra Loma and states that a boat launched there is quarantined for 30 days from inspected lakes including Del Valle. All vessels should be cleaned, drained, and dried, and bands are honored only at their issuing lake.", "observation_id": "observation-ebrpd-mussels-contra-loma", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-invasive-mussel-program" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-invasive-mussel-program" } ], "subject": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" } }, "result": { "answerability": "needs_current_check", "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine", "evidence_ids": [ "evidence-del-valle-ebrpd-contra-loma-quarantine", "evidence-ebrpd-mussels-contra-loma-quarantine" ], "explanation": "dated claim does not establish the condition on the trip date", "input_id": "claim-del-valle-ebrpd-contra-loma-quarantine", "source_ids": [ "source-ebrpd-del-valle-park-page", "source-ebrpd-invasive-mussel-program" ] } }, { "claim": { "claim": { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_ids": [ "evidence-del-valle-ebrpd-east-beach-algae", "evidence-ebrpd-algae-east-beach-caution", "evidence-ebrpd-swimming-east-caution", "evidence-ebrpd-water-quality-east-caution" ], "predicate": "water_quality_advisory", "spatial_scope_ids": [ "scope-del-valle-east-beach" ], "subject_id": "beach-del-valle-east", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "caution" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-del-valle-ebrpd-east-beach-algae", "notes": "", "observation_id": "observation-del-valle-ebrpd-water-quality", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-algae-east-beach-caution", "notes": "", "observation_id": "observation-ebrpd-algae-current-del-valle", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-swimming-east-caution", "notes": "", "observation_id": "observation-ebrpd-swimming-current-beaches", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-water-quality-east-caution", "notes": "", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the EBRPD page posted a blue-green algae Caution Advisory for the East Swim Beach and stated that the West Swim Beach had no water because of low lake levels.", "observation_id": "observation-del-valle-ebrpd-water-quality", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "At retrieval, the current-conditions table listed a Caution Advisory for the Del Valle East Swim Beach and no advisory for the West Swim Beach, where it reported no water because of low lake levels.", "observation_id": "observation-ebrpd-algae-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" }, { "artifact_refs": [], "content": "At retrieval, East Beach had a blue-green algae Caution Advisory and West Beach had no water because of low lake levels.", "observation_id": "observation-ebrpd-swimming-current-beaches", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-swimming" }, { "artifact_refs": [], "content": "At retrieval, the table listed a Caution algae advisory at Del Valle East Beach and no advisory at West Beach, where there was no water because of low lake levels.", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-current-water-quality" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" }, { "locator": "https://www.ebparks.org/recreation/swimming/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-swimming" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-current-water-quality" } ], "subject": { "entity_id": "beach-del-valle-east", "kind": "swim_beach", "name": "Del Valle East Swim Beach" } }, "result": { "answerability": "needs_current_check", "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_ids": [ "evidence-del-valle-ebrpd-east-beach-algae", "evidence-ebrpd-algae-east-beach-caution", "evidence-ebrpd-swimming-east-caution", "evidence-ebrpd-water-quality-east-caution" ], "explanation": "dated claim does not establish the condition on the trip date", "input_id": "claim-del-valle-ebrpd-east-beach-algae", "source_ids": [ "source-ebrpd-del-valle-park-page", "source-ebrpd-blue-green-algae", "source-ebrpd-del-valle-swimming", "source-ebrpd-current-water-quality" ] } }, { "claim": { "claim": { "claim_id": "claim-del-valle-ebrpd-park-open-limited", "evidence_ids": [ "evidence-del-valle-ebrpd-park-open-limited" ], "predicate": "operating_status", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "open_limited_amenities" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-park-open-limited", "evidence_id": "evidence-del-valle-ebrpd-park-open-limited", "notes": "", "observation_id": "observation-del-valle-ebrpd-current-amenities", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the park was open with limited amenities; the swim-beach food concession was closed until further notice, storm-damaged trails required caution, construction equipment or noise could be present during working hours, and the visitor center was open.", "observation_id": "observation-del-valle-ebrpd-current-amenities", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, "result": { "answerability": "needs_current_check", "claim_id": "claim-del-valle-ebrpd-park-open-limited", "evidence_ids": [ "evidence-del-valle-ebrpd-park-open-limited" ], "explanation": "dated claim does not establish the condition on the trip date", "input_id": "claim-del-valle-ebrpd-park-open-limited", "source_ids": [ "source-ebrpd-del-valle-park-page" ] } }, { "claim": { "claim": { "claim_id": "claim-del-valle-ebrpd-storm-trails", "evidence_ids": [ "evidence-del-valle-ebrpd-storm-trails" ], "predicate": "trail_condition", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "storm_damage_use_caution" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-storm-trails", "evidence_id": "evidence-del-valle-ebrpd-storm-trails", "notes": "", "observation_id": "observation-del-valle-ebrpd-current-amenities", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the park was open with limited amenities; the swim-beach food concession was closed until further notice, storm-damaged trails required caution, construction equipment or noise could be present during working hours, and the visitor center was open.", "observation_id": "observation-del-valle-ebrpd-current-amenities", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, "result": { "answerability": "needs_current_check", "claim_id": "claim-del-valle-ebrpd-storm-trails", "evidence_ids": [ "evidence-del-valle-ebrpd-storm-trails" ], "explanation": "dated claim does not establish the condition on the trip date", "input_id": "claim-del-valle-ebrpd-storm-trails", "source_ids": [ "source-ebrpd-del-valle-park-page" ] } }, { "claim": { "claim": { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_ids": [ "evidence-del-valle-ebrpd-west-beach-water", "evidence-ebrpd-algae-west-beach-no-water", "evidence-ebrpd-swimming-west-no-water", "evidence-ebrpd-water-quality-west-no-water" ], "predicate": "water_availability", "spatial_scope_ids": [ "scope-del-valle-west-beach" ], "subject_id": "beach-del-valle-west", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "no_water" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_id": "evidence-del-valle-ebrpd-west-beach-water", "notes": "", "observation_id": "observation-del-valle-ebrpd-water-quality", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_id": "evidence-ebrpd-algae-west-beach-no-water", "notes": "", "observation_id": "observation-ebrpd-algae-current-del-valle", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_id": "evidence-ebrpd-swimming-west-no-water", "notes": "", "observation_id": "observation-ebrpd-swimming-current-beaches", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_id": "evidence-ebrpd-water-quality-west-no-water", "notes": "", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the EBRPD page posted a blue-green algae Caution Advisory for the East Swim Beach and stated that the West Swim Beach had no water because of low lake levels.", "observation_id": "observation-del-valle-ebrpd-water-quality", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "At retrieval, the current-conditions table listed a Caution Advisory for the Del Valle East Swim Beach and no advisory for the West Swim Beach, where it reported no water because of low lake levels.", "observation_id": "observation-ebrpd-algae-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" }, { "artifact_refs": [], "content": "At retrieval, East Beach had a blue-green algae Caution Advisory and West Beach had no water because of low lake levels.", "observation_id": "observation-ebrpd-swimming-current-beaches", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-swimming" }, { "artifact_refs": [], "content": "At retrieval, the table listed a Caution algae advisory at Del Valle East Beach and no advisory at West Beach, where there was no water because of low lake levels.", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-current-water-quality" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" }, { "locator": "https://www.ebparks.org/recreation/swimming/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-swimming" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-current-water-quality" } ], "subject": { "entity_id": "beach-del-valle-west", "kind": "swim_beach", "name": "Del Valle West Swim Beach" } }, "result": { "answerability": "needs_current_check", "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_ids": [ "evidence-del-valle-ebrpd-west-beach-water", "evidence-ebrpd-algae-west-beach-no-water", "evidence-ebrpd-swimming-west-no-water", "evidence-ebrpd-water-quality-west-no-water" ], "explanation": "dated claim does not establish the condition on the trip date", "input_id": "claim-del-valle-ebrpd-west-beach-water", "source_ids": [ "source-ebrpd-del-valle-park-page", "source-ebrpd-blue-green-algae", "source-ebrpd-del-valle-swimming", "source-ebrpd-current-water-quality" ] } }, { "claim": { "claim": { "claim_id": "claim-del-valle-seasonal-closures-2026", "evidence_ids": [ "evidence-del-valle-seasonal-closures-2026" ], "predicate": "published_seasonal_closures", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": null, "starts_on": "2026-05-20" }, "value": { "Caballo Loco": [ "11-01", "03-31" ], "Cedar Camp": "until_further_notice", "Hetch Hetchy": [ "11-01", "03-31" ], "Punta Vaca": [ "11-01", "04-30" ], "Venados": [ "11-01", "03-31" ], "Wild Turkey": [ "11-01", "03-31" ], "cabins": [ "01-01", "01-31" ], "family_sites_111_150": [ "11-01", "04-30" ], "family_sites_65_110": [ "11-01", "03-31" ], "subject_to_change_without_notice": true } }, "evidence": [ { "claim_id": "claim-del-valle-seasonal-closures-2026", "evidence_id": "evidence-del-valle-seasonal-closures-2026", "notes": "", "observation_id": "observation-del-valle-seasonal-closures-2026", "stance": "supports" } ], "observations": [ { "artifact_refs": [ "PDF page 1" ], "content": "Updated 2026-05-20: cabins close Jan 1-31; Cedar is closed until further notice; Caballo Loco, Hetch Hetchy, Venados and Wild Turkey close Nov 1-Mar 31; family sites 65-110 close Nov 1-Mar 31; sites 111-150 and Punta Vaca close Nov 1-Apr 30. Dates may change without notice.", "observation_id": "observation-del-valle-seasonal-closures-2026", "observed_at": "2026-05-20T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-seasonal-closures-2026" } ], "sources": [ { "locator": "https://www.ebparks.org/sites/default/files/New-Seasonal-Closures-05.20.26.pdf", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-seasonal-closures-2026" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, "result": { "answerability": "answered", "claim_id": "claim-del-valle-seasonal-closures-2026", "evidence_ids": [ "evidence-del-valle-seasonal-closures-2026" ], "explanation": "claim is effective on the trip date", "input_id": "claim-del-valle-seasonal-closures-2026", "source_ids": [ "source-ebrpd-seasonal-closures-2026" ] } }, { "claim": { "claim": { "claim_id": 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reservation cancellation with email or phone notice.", "observation_id": "observation-del-valle-volatile-alerts", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "record": { "gap_id": "gap-del-valle-current-flood-closure", "question": "Is the park or reserved site affected by flooding for the planned trip?", "reason": "Flood safety can cancel a reservation after booking.", "related_ids": [ "claim-del-valle-volatile-alerts" ] }, "record_type": "gap", "related_records": [ { "record": { "claim_id": "claim-del-valle-volatile-alerts", "evidence_ids": [ "evidence-del-valle-volatile-alerts" ], "predicate": "pretrip_alert_topics", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": null, "value": [ "fire_danger", "blue_green_algae", "flood_closure" ] }, "record_id": "claim-del-valle-volatile-alerts", "record_type": "claim" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" } ] }, "result": { "answerability": "unknown", "claim_id": "", "evidence_ids": [], "explanation": "Flood safety can cancel a reservation after booking.", "input_id": "gap-del-valle-current-flood-closure", "source_ids": [] } }, { "gap": { "gap_id": "gap-del-valle-seasonal-closures-current", "question": "Which published Del Valle closure schedule governs Cedar Camp and Punta Vaca?", "reason": "The May 20, 2026 EBRPD sheet closes Cedar until further notice and Punta Vaca through April 30; the live ReserveAmerica listing shows both reopening March 31. Neither source explains the disagreement.", "related_ids": [ "claim-del-valle-seasonal-closures-2026", "claim-reserveamerica-del-valle-campsites-closures" ] }, "gap_detail": { "claims": [ { "claim": { "claim_id": "claim-del-valle-seasonal-closures-2026", "evidence_ids": [ "evidence-del-valle-seasonal-closures-2026" ], "predicate": "published_seasonal_closures", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": null, "starts_on": "2026-05-20" }, "value": { "Caballo Loco": [ "11-01", "03-31" ], "Cedar Camp": "until_further_notice", "Hetch Hetchy": [ "11-01", "03-31" ], "Punta Vaca": [ "11-01", "04-30" ], "Venados": [ "11-01", "03-31" ], "Wild Turkey": [ "11-01", "03-31" ], "cabins": [ "01-01", "01-31" ], "family_sites_111_150": [ "11-01", "04-30" ], "family_sites_65_110": [ "11-01", "03-31" ], "subject_to_change_without_notice": true } }, "evidence": [ { "claim_id": "claim-del-valle-seasonal-closures-2026", "evidence_id": "evidence-del-valle-seasonal-closures-2026", "notes": "", "observation_id": "observation-del-valle-seasonal-closures-2026", "stance": "supports" } ], "observations": [ { "artifact_refs": [ "PDF page 1" ], "content": "Updated 2026-05-20: cabins close Jan 1-31; Cedar is closed until further notice; Caballo Loco, Hetch Hetchy, Venados and Wild Turkey close Nov 1-Mar 31; family sites 65-110 close Nov 1-Mar 31; sites 111-150 and Punta Vaca close Nov 1-Apr 30. Dates may change without notice.", "observation_id": "observation-del-valle-seasonal-closures-2026", "observed_at": "2026-05-20T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-seasonal-closures-2026" } ], "sources": [ { "locator": "https://www.ebparks.org/sites/default/files/New-Seasonal-Closures-05.20.26.pdf", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-seasonal-closures-2026" } ] }, { "claim": { "claim_id": "claim-reserveamerica-del-valle-campsites-closures", "evidence_ids": [ "evidence-reserveamerica-del-valle-campsites-closures" ], "predicate": "published_seasonal_closures", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "facility-reserveamerica-del-valle-110003", "temporal_scope": null, "value": { "Caballo Loco": [ "11-01", "03-31" ], "Cedar Camp": [ "11-01", "03-31" ], "Hetch Hetchy": [ "11-01", "03-31" ], "Punta Vaca": [ "11-01", "03-31" ], "Venados": [ "11-01", "03-31" ], "Wild Turkey": [ "11-01", "03-31" ], "cabins": [ "01-01", "01-31" ], "retrieved_on": "2026-09-20" } }, "evidence": [ { "claim_id": "claim-reserveamerica-del-valle-campsites-closures", "evidence_id": "evidence-reserveamerica-del-valle-campsites-closures", "notes": "Undated live-page schedule captured on retrieval date; no effective year was printed for the recurring windows.", "observation_id": "observation-reserveamerica-del-valle-campsites-closures", "stance": "supports" } ], "observations": [ { "artifact_refs": [ "Season Dates", "Seasonal site closures" ], "content": "At retrieval the live listing marked Cedar, Wild Turkey, Punta Vaca, Caballo Loco, Hetch Hetchy, and Venados closed November 1 through March 31 and cabins closed January 1 through January 31; this conflicts with the May 20, 2026 EBRPD closure sheet for Cedar and Punta Vaca.", "observation_id": "observation-reserveamerica-del-valle-campsites-closures", "observed_at": null, "observer": "Wayproof live Chrome source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-campsites-110003" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/campsites", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-campsites-110003" } ] } ], "entities": [ { "entity_id": "facility-reserveamerica-del-valle-110003", "kind": "booking_facility", "name": "Del Valle" }, { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } ], "history": [ { "action": "ADD", "change_set_id": "wp-20260920-ebrpd-del-valle-campground-corpus", "evidence_refs": [], "knowledge_gap_refs": [], "path": "canonical/v0/gaps/gap-del-valle-seasonal-closures-current.json", "reason": "Add the official EBRPD Del Valle campground corpus, preserving dated conflicts and live recheck boundaries.", "record_id": "gap-del-valle-seasonal-closures-current", "record_type": "gap", "summary": "Ingest eight official EBRPD campground sources with current, dated, conflicting, and volatile evidence kept distinct." }, { "action": "REPLACE", "change_set_id": "wp-20260920-reserveamerica-del-valle-site-details", "evidence_refs": [], "knowledge_gap_refs": [], "path": "canonical/v0/gaps/gap-del-valle-seasonal-closures-current.json", "reason": "Replace the general currentness question with the concrete conflict revealed by the complete live booking listing.", "record_id": "gap-del-valle-seasonal-closures-current", "record_type": "gap", "summary": "Ingest all 155 live Del Valle ReserveAmerica site-detail pages with structured profiles, exact source lineage, explicit missing coordinates, and preserved inventory and seasonal conflicts." } ], "navigation": { "next_id": "gap-del-valle-site-coordinates-unpublished", "position": 20, "previous_id": "gap-del-valle-park-area-conflict", "total": 299 }, "observations": [ { "artifact_refs": [ "PDF page 1" ], "content": "Updated 2026-05-20: cabins close Jan 1-31; Cedar is closed until further notice; Caballo Loco, Hetch Hetchy, Venados and Wild Turkey close Nov 1-Mar 31; family sites 65-110 close Nov 1-Mar 31; sites 111-150 and Punta Vaca close Nov 1-Apr 30. Dates may change without notice.", "observation_id": "observation-del-valle-seasonal-closures-2026", "observed_at": "2026-05-20T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-seasonal-closures-2026" }, { "artifact_refs": [ "Season Dates", "Seasonal site closures" ], "content": "At retrieval the live listing marked Cedar, Wild Turkey, Punta Vaca, Caballo Loco, Hetch Hetchy, and Venados closed November 1 through March 31 and cabins closed January 1 through January 31; this conflicts with the May 20, 2026 EBRPD closure sheet for Cedar and Punta Vaca.", "observation_id": "observation-reserveamerica-del-valle-campsites-closures", "observed_at": null, "observer": "Wayproof live Chrome source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-campsites-110003" } ], "record": { "gap_id": "gap-del-valle-seasonal-closures-current", "question": "Which published Del Valle closure schedule governs Cedar Camp and Punta Vaca?", "reason": "The May 20, 2026 EBRPD sheet closes Cedar until further notice and Punta Vaca through April 30; the live ReserveAmerica listing shows both reopening March 31. Neither source explains the disagreement.", "related_ids": [ "claim-del-valle-seasonal-closures-2026", "claim-reserveamerica-del-valle-campsites-closures" ] }, "record_type": "gap", "related_records": [ { "record": { "claim_id": "claim-del-valle-seasonal-closures-2026", "evidence_ids": [ "evidence-del-valle-seasonal-closures-2026" ], "predicate": "published_seasonal_closures", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": null, "starts_on": "2026-05-20" }, "value": { "Caballo Loco": [ "11-01", "03-31" ], "Cedar Camp": "until_further_notice", "Hetch Hetchy": [ "11-01", "03-31" ], "Punta Vaca": [ "11-01", "04-30" ], "Venados": [ "11-01", "03-31" ], "Wild Turkey": [ "11-01", "03-31" ], "cabins": [ "01-01", "01-31" ], "family_sites_111_150": [ "11-01", "04-30" ], "family_sites_65_110": [ "11-01", "03-31" ], "subject_to_change_without_notice": true } }, "record_id": "claim-del-valle-seasonal-closures-2026", "record_type": "claim" }, { "record": { "claim_id": "claim-reserveamerica-del-valle-campsites-closures", "evidence_ids": [ "evidence-reserveamerica-del-valle-campsites-closures" ], "predicate": "published_seasonal_closures", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "facility-reserveamerica-del-valle-110003", "temporal_scope": null, "value": { "Caballo Loco": [ "11-01", "03-31" ], "Cedar Camp": [ "11-01", "03-31" ], "Hetch Hetchy": [ "11-01", "03-31" ], "Punta Vaca": [ "11-01", "03-31" ], "Venados": [ "11-01", "03-31" ], "Wild Turkey": [ "11-01", "03-31" ], "cabins": [ "01-01", "01-31" ], "retrieved_on": "2026-09-20" } }, "record_id": "claim-reserveamerica-del-valle-campsites-closures", "record_type": "claim" } ], "sources": [ { "locator": "https://www.ebparks.org/sites/default/files/New-Seasonal-Closures-05.20.26.pdf", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-seasonal-closures-2026" }, { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/campsites", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-campsites-110003" } ] }, "result": { "answerability": "unknown", "claim_id": "", "evidence_ids": [], "explanation": "The May 20, 2026 EBRPD sheet closes Cedar until further notice and Punta Vaca through April 30; the live ReserveAmerica listing shows both reopening March 31. Neither source explains the disagreement.", "input_id": "gap-del-valle-seasonal-closures-current", "source_ids": [] } }, { "gap": { "gap_id": "gap-ebrpd-algae-advisory-level-actions", "question": "Which activities are allowed or prohibited at each EBRPD algae advisory level?", "reason": "This page gives general health guidance but does not define the operational rules for Caution versus Danger; the linked beach-conditions material is still needed.", "related_ids": [ "claim-ebrpd-algae-human-exposure", "claim-ebrpd-algae-dog-exposure", "claim-ebrpd-algae-advisory-fish-guidance", "claim-del-valle-ebrpd-east-beach-algae" ] }, "gap_detail": { "claims": [ { "claim": { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_ids": [ "evidence-del-valle-ebrpd-east-beach-algae", "evidence-ebrpd-algae-east-beach-caution", "evidence-ebrpd-swimming-east-caution", "evidence-ebrpd-water-quality-east-caution" ], "predicate": "water_quality_advisory", "spatial_scope_ids": [ "scope-del-valle-east-beach" ], "subject_id": "beach-del-valle-east", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "caution" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-del-valle-ebrpd-east-beach-algae", "notes": "", "observation_id": "observation-del-valle-ebrpd-water-quality", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-algae-east-beach-caution", "notes": "", "observation_id": "observation-ebrpd-algae-current-del-valle", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-swimming-east-caution", "notes": "", "observation_id": "observation-ebrpd-swimming-current-beaches", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-water-quality-east-caution", "notes": "", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the EBRPD page posted a blue-green algae Caution Advisory for the East Swim Beach and stated that the West Swim Beach had no water because of low lake levels.", "observation_id": "observation-del-valle-ebrpd-water-quality", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "At retrieval, the current-conditions table listed a Caution Advisory for the Del Valle East Swim Beach and no advisory for the West Swim Beach, where it reported no water because of low lake levels.", "observation_id": "observation-ebrpd-algae-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" }, { "artifact_refs": [], "content": "At retrieval, East Beach had a blue-green algae Caution Advisory and West Beach had no water because of low lake levels.", "observation_id": "observation-ebrpd-swimming-current-beaches", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-swimming" }, { "artifact_refs": [], "content": "At retrieval, the table listed a Caution algae advisory at Del Valle East Beach and no advisory at West Beach, where there was no water because of low lake levels.", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-current-water-quality" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" }, { "locator": "https://www.ebparks.org/recreation/swimming/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-swimming" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-current-water-quality" } ] }, { "claim": { "claim_id": "claim-ebrpd-algae-advisory-fish-guidance", "evidence_ids": [ "evidence-ebrpd-algae-advisory-fish-guidance" ], "predicate": "advisory_fish_guidance", "spatial_scope_ids": [ "scope-ebrpd-water-quality-program" ], "subject_id": "program-ebrpd-hab-monitoring", "temporal_scope": null, "value": { "avoid_unnecessary_water_contact": true, "cook_thoroughly": true, "discard_guts_and_liver": true, "wash_fillet_with_safe_water": true, "wash_hands_after_wet_contact": true } }, "evidence": [ { "claim_id": "claim-ebrpd-algae-advisory-fish-guidance", "evidence_id": "evidence-ebrpd-algae-advisory-fish-guidance", "notes": "", "observation_id": "observation-ebrpd-algae-fish-guidance", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "During an algae advisory, EBRPD advises avoiding unnecessary water contact and washing hands after handling fish or wet equipment. Fish fillets should be washed with tap or bottled water, guts and liver discarded, and fish cooked thoroughly. Reservoir fish are tested annually; at retrieval the page reported no microcystin detected to date in fish flesh from District-managed waters.", "observation_id": "observation-ebrpd-algae-fish-guidance", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" } ], "sources": [ { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" } ] }, { "claim": { "claim_id": "claim-ebrpd-algae-dog-exposure", "evidence_ids": [ "evidence-ebrpd-algae-dog-exposure" ], "predicate": "dog_exposure_risk", "spatial_scope_ids": [ "scope-ebrpd-water-quality-program" ], "subject_id": "program-ebrpd-hab-monitoring", "temporal_scope": null, "value": { "high_susceptibility": true, "routes": [ "drinking", "swimming", "wading", "grooming_fur_or_paws", "eating_dried_shoreline_algae" ] } }, "evidence": [ { "claim_id": "claim-ebrpd-algae-dog-exposure", "evidence_id": "evidence-ebrpd-algae-dog-exposure", "notes": "", "observation_id": "observation-ebrpd-algae-health-risk", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Exposure to toxic algae by ingestion, inhalation, or skin contact can cause rashes, eye or skin irritation, allergic reactions, breathing difficulty or congestion, gastrointestinal illness, and in high exposures serious illness or death. Dogs face special risk from drinking, swimming, wading, grooming contaminated fur or paws, or eating dried shoreline algae.", "observation_id": "observation-ebrpd-algae-health-risk", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" } ], "sources": [ { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" } ] }, { "claim": { "claim_id": "claim-ebrpd-algae-human-exposure", "evidence_ids": [ "evidence-ebrpd-algae-human-exposure" ], "predicate": "human_exposure_risk", "spatial_scope_ids": [ "scope-ebrpd-water-quality-program" ], "subject_id": "program-ebrpd-hab-monitoring", "temporal_scope": null, "value": { "effects": [ "rash", "skin_eye_irritation", "allergic_reaction", "breathing_difficulty", "congestion", "gastrointestinal_illness", "serious_illness", "death" ], "routes": [ "ingestion", "inhalation", "skin_contact" ] } }, "evidence": [ { "claim_id": "claim-ebrpd-algae-human-exposure", "evidence_id": "evidence-ebrpd-algae-human-exposure", "notes": "", "observation_id": "observation-ebrpd-algae-health-risk", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Exposure to toxic algae by ingestion, inhalation, or skin contact can cause rashes, eye or skin irritation, allergic reactions, breathing difficulty or congestion, gastrointestinal illness, and in high exposures serious illness or death. Dogs face special risk from drinking, swimming, wading, grooming contaminated fur or paws, or eating dried shoreline algae.", "observation_id": "observation-ebrpd-algae-health-risk", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" } ], "sources": [ { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" } ] } ], "entities": [ { "entity_id": "beach-del-valle-east", "kind": "swim_beach", "name": "Del Valle East Swim Beach" }, { "entity_id": "program-ebrpd-hab-monitoring", "kind": "monitoring_program", "name": "EBRPD Harmful Algal Bloom Monitoring Program" } ], "history": [ { "action": "ADD", "change_set_id": "wp-20260920-ebrpd-blue-green-algae", "evidence_refs": [], "knowledge_gap_refs": [], "path": "canonical/v0/gaps/gap-ebrpd-algae-advisory-level-actions.json", "reason": "Add EBRPD blue-green-algae health guidance and dated Del Valle conditions.", "record_id": "gap-ebrpd-algae-advisory-level-actions", "record_type": "gap", "summary": "Add EBRPD harmful-algal-bloom health and monitoring guidance, corroborate dated Del Valle beach conditions, and preserve the unresolved advisory-level action boundary." } ], "navigation": { "next_id": "gap-ebrpd-mussels-current-flagged-waters", "position": 99, "previous_id": "gap-east-fork-trip-date-operations", "total": 299 }, "observations": [ { "artifact_refs": [], "content": "At retrieval, the EBRPD page posted a blue-green algae Caution Advisory for the East Swim Beach and stated that the West Swim Beach had no water because of low lake levels.", "observation_id": "observation-del-valle-ebrpd-water-quality", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "At retrieval, the current-conditions table listed a Caution Advisory for the Del Valle East Swim Beach and no advisory for the West Swim Beach, where it reported no water because of low lake levels.", "observation_id": "observation-ebrpd-algae-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" }, { "artifact_refs": [], "content": "During an algae advisory, EBRPD advises avoiding unnecessary water contact and washing hands after handling fish or wet equipment. Fish fillets should be washed with tap or bottled water, guts and liver discarded, and fish cooked thoroughly. Reservoir fish are tested annually; at retrieval the page reported no microcystin detected to date in fish flesh from District-managed waters.", "observation_id": "observation-ebrpd-algae-fish-guidance", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" }, { "artifact_refs": [], "content": "Exposure to toxic algae by ingestion, inhalation, or skin contact can cause rashes, eye or skin irritation, allergic reactions, breathing difficulty or congestion, gastrointestinal illness, and in high exposures serious illness or death. Dogs face special risk from drinking, swimming, wading, grooming contaminated fur or paws, or eating dried shoreline algae.", "observation_id": "observation-ebrpd-algae-health-risk", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" }, { "artifact_refs": [], "content": "At retrieval, East Beach had a blue-green algae Caution Advisory and West Beach had no water because of low lake levels.", "observation_id": "observation-ebrpd-swimming-current-beaches", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-swimming" }, { "artifact_refs": [], "content": "At retrieval, the table listed a Caution algae advisory at Del Valle East Beach and no advisory at West Beach, where there was no water because of low lake levels.", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-current-water-quality" } ], "record": { "gap_id": "gap-ebrpd-algae-advisory-level-actions", "question": "Which activities are allowed or prohibited at each EBRPD algae advisory level?", "reason": "This page gives general health guidance but does not define the operational rules for Caution versus Danger; the linked beach-conditions material is still needed.", "related_ids": [ "claim-ebrpd-algae-human-exposure", "claim-ebrpd-algae-dog-exposure", "claim-ebrpd-algae-advisory-fish-guidance", "claim-del-valle-ebrpd-east-beach-algae" ] }, "record_type": "gap", "related_records": [ { "record": { "claim_id": "claim-ebrpd-algae-human-exposure", "evidence_ids": [ "evidence-ebrpd-algae-human-exposure" ], "predicate": "human_exposure_risk", "spatial_scope_ids": [ "scope-ebrpd-water-quality-program" ], "subject_id": "program-ebrpd-hab-monitoring", "temporal_scope": null, "value": { "effects": [ "rash", "skin_eye_irritation", "allergic_reaction", "breathing_difficulty", "congestion", "gastrointestinal_illness", "serious_illness", "death" ], "routes": [ "ingestion", "inhalation", "skin_contact" ] } }, "record_id": "claim-ebrpd-algae-human-exposure", "record_type": "claim" }, { "record": { "claim_id": "claim-ebrpd-algae-dog-exposure", "evidence_ids": [ "evidence-ebrpd-algae-dog-exposure" ], "predicate": "dog_exposure_risk", "spatial_scope_ids": [ "scope-ebrpd-water-quality-program" ], "subject_id": "program-ebrpd-hab-monitoring", "temporal_scope": null, "value": { "high_susceptibility": true, "routes": [ "drinking", "swimming", "wading", "grooming_fur_or_paws", "eating_dried_shoreline_algae" ] } }, "record_id": "claim-ebrpd-algae-dog-exposure", "record_type": "claim" }, { "record": { "claim_id": "claim-ebrpd-algae-advisory-fish-guidance", "evidence_ids": [ "evidence-ebrpd-algae-advisory-fish-guidance" ], "predicate": "advisory_fish_guidance", "spatial_scope_ids": [ "scope-ebrpd-water-quality-program" ], "subject_id": "program-ebrpd-hab-monitoring", "temporal_scope": null, "value": { "avoid_unnecessary_water_contact": true, "cook_thoroughly": true, "discard_guts_and_liver": true, "wash_fillet_with_safe_water": true, "wash_hands_after_wet_contact": true } }, "record_id": "claim-ebrpd-algae-advisory-fish-guidance", "record_type": "claim" }, { "record": { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_ids": [ "evidence-del-valle-ebrpd-east-beach-algae", "evidence-ebrpd-algae-east-beach-caution", "evidence-ebrpd-swimming-east-caution", "evidence-ebrpd-water-quality-east-caution" ], "predicate": "water_quality_advisory", "spatial_scope_ids": [ "scope-del-valle-east-beach" ], "subject_id": "beach-del-valle-east", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "caution" }, "record_id": "claim-del-valle-ebrpd-east-beach-algae", "record_type": "claim" } ], "sources": [ { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-current-water-quality" }, { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/recreation/swimming/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-swimming" } ] }, "result": { "answerability": "unknown", "claim_id": "", "evidence_ids": [], "explanation": "This page gives general health guidance but does not define the operational rules for Caution versus Danger; the linked beach-conditions material is still needed.", "input_id": "gap-ebrpd-algae-advisory-level-actions", "source_ids": [] } } ], "result_id": "result-del-valle-pretrip-recheck", "state": "required", "topics": [ "fire_danger", "blue_green_algae", "flood_closure", "boat_inspection_procedure", "swim_beach_water_level", "storm_damaged_trails", "limited_amenities", "marina_and_store_hours", "cross_lake_boat_quarantine", "flagged_prior_waterbodies", "inspection_fee_and_band_eligibility", "wet_weather_inspection_protocol", "campground_and_site_closures", "ohlone_backcountry_water", "sunol_trail_and_fire_status" ] }, "related": [ { "entity": { "entity_id": "staging-del-valle-arroyo-road", "kind": "staging_area", "name": "Arroyo Road Staging Area" }, "relationship": { "evidence_ids": [ "evidence-del-valle-ebrpd-arroyo-staging" ], "object_id": "park-del-valle-regional-park", "predicate": "accesses", "relationship_id": "relationship-del-valle-ebrpd-arroyo-staging", "subject_id": "staging-del-valle-arroyo-road", "temporal_scope": null } }, { "entity": { "entity_id": "entrance-del-valle-main", "kind": "park_entrance", "name": "Del Valle Road Park Entrance" }, "relationship": { "evidence_ids": [ "evidence-del-valle-ebrpd-main-entrance" ], "object_id": "park-del-valle-regional-park", "predicate": "accesses", "relationship_id": "relationship-del-valle-ebrpd-main-entrance", "subject_id": "entrance-del-valle-main", "temporal_scope": null } }, { "entity": { "entity_id": "trail-ohlone-wilderness", "kind": "trail", "name": "Ohlone Wilderness Trail" }, "relationship": { "evidence_ids": [ "evidence-del-valle-ohlone-gateway" ], "object_id": "park-del-valle-regional-park", "predicate": "has_eastern_gateway", "relationship_id": "relationship-ohlone-gateway-del-valle", "subject_id": "trail-ohlone-wilderness", "temporal_scope": null } }, { "entity": { "entity_id": "beach-del-valle-east", "kind": "swim_beach", "name": "Del Valle East Swim Beach" }, "relationship": { "evidence_ids": [ "evidence-ebrpd-swimming-east-beach-in-park" ], "object_id": "park-del-valle-regional-park", "predicate": "located_in", "relationship_id": "relationship-del-valle-east-beach-in-park", "subject_id": "beach-del-valle-east", "temporal_scope": null } }, { "entity": { "entity_id": "beach-del-valle-west", "kind": "swim_beach", "name": "Del Valle West Swim Beach" }, "relationship": { "evidence_ids": [ "evidence-ebrpd-swimming-west-beach-in-park" ], "object_id": "park-del-valle-regional-park", "predicate": "located_in", "relationship_id": "relationship-del-valle-west-beach-in-park", "subject_id": "beach-del-valle-west", "temporal_scope": null } }, { "entity": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" }, "relationship": { "evidence_ids": [ "evidence-del-valle-campground-in-park" ], "object_id": "park-del-valle-regional-park", "predicate": "located_in", "relationship_id": "relationship-family-campground-in-del-valle", "subject_id": "campground-del-valle-family", "temporal_scope": null } }, { "entity": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" }, "relationship": { "evidence_ids": [ "evidence-del-valle-lake-in-park" ], "object_id": "park-del-valle-regional-park", "predicate": "located_in", "relationship_id": "relationship-lake-del-valle-in-park", "subject_id": "lake-del-valle", "temporal_scope": null } }, { "entity": { "entity_id": "org-east-bay-regional-park-district", "kind": "organization", "name": "East Bay Regional Park District" }, "relationship": { "evidence_ids": [ "evidence-del-valle-park-managed-by-ebrpd" ], "object_id": "park-del-valle-regional-park", "predicate": "manages", "relationship_id": "relationship-ebrpd-manages-del-valle", "subject_id": "org-east-bay-regional-park-district", "temporal_scope": null } }, { "entity": { "entity_id": "trail-ohlone-wilderness", "kind": "trail", "name": "Ohlone Wilderness Trail" }, "relationship": { "evidence_ids": [ "evidence-ohlone-trail-traversed-parks" ], "object_id": "park-del-valle-regional-park", "predicate": "traverses", "relationship_id": "relationship-ohlone-trail-traverses-del-valle-regional-park", "subject_id": "trail-ohlone-wilderness", "temporal_scope": null } } ], "sections": [ { "claims": [ { "claim": { "claim_id": "claim-del-valle-ebrpd-park-open-limited", "evidence_ids": [ "evidence-del-valle-ebrpd-park-open-limited" ], "predicate": "operating_status", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "open_limited_amenities" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-park-open-limited", "evidence_id": "evidence-del-valle-ebrpd-park-open-limited", "notes": "", "observation_id": "observation-del-valle-ebrpd-current-amenities", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the park was open with limited amenities; the swim-beach food concession was closed until further notice, storm-damaged trails required caution, construction equipment or noise could be present during working hours, and the visitor center was open.", "observation_id": "observation-del-valle-ebrpd-current-amenities", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, { "claim": { "claim_id": "claim-del-valle-ebrpd-entry-fees", "evidence_ids": [ "evidence-del-valle-ebrpd-entry-fees" ], "predicate": "published_entry_fees", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": null, "value": { "arroyo_staging_parking_usd": 0, "bus_parking_usd": 25, "flat_entry_excludes": [ "fishing_permit", "mussel_inspection" ], "flat_entry_includes": [ "vehicle_parking", "trailer_parking", "boat_launch" ], "flat_entry_season": "April through Labor Day", "trailered_vehicle_parking_usd": 5, "vehicle_parking_usd": 5, "weekend_holiday_flat_entry_usd": 10 } }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-entry-fees", "evidence_id": "evidence-del-valle-ebrpd-entry-fees", "notes": "", "observation_id": "observation-del-valle-ebrpd-fees", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page lists $5 vehicle parking, $5 trailered-vehicle parking, $25 bus parking, and no parking fee at Arroyo staging. On weekends and holidays from April through Labor Day it lists a $10 flat entry fee including vehicle and trailer parking and boat launch, excluding fishing permits and mussel inspection.", "observation_id": "observation-del-valle-ebrpd-fees", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, { "claim": { "claim_id": "claim-del-valle-ebrpd-park-gate-hours", "evidence_ids": [ "evidence-del-valle-ebrpd-park-gate-hours" ], "predicate": "seasonal_gate_hours", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": null, "value": { "after_labor_day_through_september_30": [ "06:00", "20:00" ], "april": [ "06:00", "20:00" ], "january_february": [ "07:00", "18:00" ], "march": [ "06:00", "19:00" ], "may_through_labor_day": [ "06:00", "21:00" ], "november_december": [ "07:00", "18:00" ], "october": [ "06:00", "19:00" ] } }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-park-gate-hours", "evidence_id": "evidence-del-valle-ebrpd-park-gate-hours", "notes": "", "observation_id": "observation-del-valle-ebrpd-hours", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page gives a 10 PM to 5 AM park curfew and seasonal park gate hours: 7 AM-6 PM January-February, 6 AM-7 PM March, 6 AM-8 PM April, 6 AM-9 PM May through Labor Day, 6 AM-8 PM after Labor Day through September 30, 6 AM-7 PM October, and 7 AM-6 PM November-December.", "observation_id": "observation-del-valle-ebrpd-hours", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, { "claim": { "claim_id": "claim-del-valle-park-address", "evidence_ids": [ "evidence-del-valle-park-address", "evidence-del-valle-ebrpd-park-address" ], "predicate": "street_address", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": null, "value": "7000 Del Valle Road, Livermore, CA 94550" }, "evidence": [ { "claim_id": "claim-del-valle-park-address", "evidence_id": "evidence-del-valle-park-address", "notes": "", "observation_id": "observation-del-valle-identity-location", "stance": "supports" }, { "claim_id": "claim-del-valle-park-address", "evidence_id": "evidence-del-valle-ebrpd-park-address", "notes": "", "observation_id": "observation-del-valle-ebrpd-identity", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page identifies Del Valle Regional Park as an East Bay Regional Park District park about ten miles south of Livermore, with a 4,316-acre park around a five-mile-long lake; it lists 7000 Del Valle Road, Livermore, California 94550 and coordinates 37.56917, -121.68722.", "observation_id": "observation-del-valle-identity-location", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [], "content": "The EBRPD page places Del Valle ten miles south of Livermore, describes a five-mile lake in a 4,395-acre park, gives the address 7000 Del Valle Road, and calls the park the eastern gateway to the 28-mile Ohlone Wilderness Trail.", "observation_id": "observation-del-valle-ebrpd-identity", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, { "claim": { "claim_id": "claim-del-valle-ebrpd-storm-trails", "evidence_ids": [ "evidence-del-valle-ebrpd-storm-trails" ], "predicate": "trail_condition", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "storm_damage_use_caution" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-storm-trails", "evidence_id": "evidence-del-valle-ebrpd-storm-trails", "notes": "", "observation_id": "observation-del-valle-ebrpd-current-amenities", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the park was open with limited amenities; the swim-beach food concession was closed until further notice, storm-damaged trails required caution, construction equipment or noise could be present during working hours, and the visitor center was open.", "observation_id": "observation-del-valle-ebrpd-current-amenities", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, { "claim": { "claim_id": "claim-del-valle-ebrpd-main-entrance", "evidence_ids": [ "evidence-del-valle-ebrpd-main-entrance" ], "predicate": "accesses", "spatial_scope_ids": [ "scope-del-valle-main-entrance" ], "subject_id": "entrance-del-valle-main", "temporal_scope": null, "value": "park-del-valle-regional-park" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-main-entrance", "evidence_id": "evidence-del-valle-ebrpd-main-entrance", "notes": "", "observation_id": "observation-del-valle-ebrpd-access", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page distinguishes the fee-charging main entrance on Del Valle Road from the no-fee Arroyo Road Staging Area and lists two Del Valle Road walk-in entrances.", "observation_id": "observation-del-valle-ebrpd-access", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "entrance-del-valle-main", "kind": "park_entrance", "name": "Del Valle Road Park Entrance" } } ], "title": "Getting there and entering" }, { "claims": [ { "claim": { "claim_id": "claim-del-valle-developed-group-capacity-2026", "evidence_ids": [ "evidence-del-valle-developed-group-capacity-2026" ], "predicate": "developed_group_camping_capacity", "spatial_scope_ids": [ "scope-del-valle-group-camps" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": "2026-12-31", "starts_on": "2026-01-01" }, "value": { "maximum_people": 50, "maximum_vehicles": 15, "minimum_people": 17 } }, "evidence": [ { "claim_id": "claim-del-valle-developed-group-capacity-2026", "evidence_id": "evidence-del-valle-developed-group-capacity-2026", "notes": "", "observation_id": "observation-del-valle-group-capacity-2026", "stance": "supports" } ], "observations": [ { "artifact_refs": [ "PDF page 1" ], "content": "The 2026 group camping sheet gives Del Valle developed group camping a minimum of 17 people, maximum of 50, and 15 vehicles, while warning that RVs and similar vehicles are not permitted.", "observation_id": "observation-del-valle-group-capacity-2026", "observed_at": "2026-01-01T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-group-camping-capacity-2026" } ], "sources": [ { "locator": "https://www.ebparks.org/sites/default/files/ebprd-group-camping-minimum-2026.pdf?v=20251210", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-group-camping-capacity-2026" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, { "claim": { "claim_id": "claim-del-valle-group-booking", "evidence_ids": [ "evidence-del-valle-group-booking", "evidence-del-valle-camping-current-group-booking" ], "predicate": "group_camping_reservation", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": null, "value": { "channel": "phone", "minimum_advance_business_days": 3, "minimum_group_size": 17 } }, "evidence": [ { "claim_id": "claim-del-valle-group-booking", "evidence_id": "evidence-del-valle-group-booking", "notes": "", "observation_id": "observation-del-valle-group-booking", "stance": "supports" }, { "claim_id": "claim-del-valle-group-booking", "evidence_id": "evidence-del-valle-camping-current-group-booking", "notes": "", "observation_id": "observation-del-valle-camping-reservations", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Groups of 17 or more are directed to group campsites. Group campsites are available by phone reservation only and require at least three business days of advance notice; requirements may differ for reservations made less than seven days ahead.", "observation_id": "observation-del-valle-group-booking", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [], "content": "Camping requires a reservation. Family sites require at least two business days; group sites at least three. ADA and group reservations are phone-only. Family sites may also be booked online.", "observation_id": "observation-del-valle-camping-reservations", "observed_at": null, "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-camping" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/parks/del-valle/camping", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-camping" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, { "claim": { "claim_id": "claim-del-valle-seasonal-closures-2026", "evidence_ids": [ "evidence-del-valle-seasonal-closures-2026" ], "predicate": "published_seasonal_closures", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "park-del-valle-regional-park", "temporal_scope": { "ends_on": null, "starts_on": "2026-05-20" }, "value": { "Caballo Loco": [ "11-01", "03-31" ], "Cedar Camp": "until_further_notice", "Hetch Hetchy": [ "11-01", "03-31" ], "Punta Vaca": [ "11-01", "04-30" ], "Venados": [ "11-01", "03-31" ], "Wild Turkey": [ "11-01", "03-31" ], "cabins": [ "01-01", "01-31" ], "family_sites_111_150": [ "11-01", "04-30" ], "family_sites_65_110": [ "11-01", "03-31" ], "subject_to_change_without_notice": true } }, "evidence": [ { "claim_id": "claim-del-valle-seasonal-closures-2026", "evidence_id": "evidence-del-valle-seasonal-closures-2026", "notes": "", "observation_id": "observation-del-valle-seasonal-closures-2026", "stance": "supports" } ], "observations": [ { "artifact_refs": [ "PDF page 1" ], "content": "Updated 2026-05-20: cabins close Jan 1-31; Cedar is closed until further notice; Caballo Loco, Hetch Hetchy, Venados and Wild Turkey close Nov 1-Mar 31; family sites 65-110 close Nov 1-Mar 31; sites 111-150 and Punta Vaca close Nov 1-Apr 30. Dates may change without notice.", "observation_id": "observation-del-valle-seasonal-closures-2026", "observed_at": "2026-05-20T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-seasonal-closures-2026" } ], "sources": [ { "locator": "https://www.ebparks.org/sites/default/files/New-Seasonal-Closures-05.20.26.pdf", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-seasonal-closures-2026" } ], "subject": { "entity_id": "park-del-valle-regional-park", "kind": "park", "name": "Del Valle Regional Park" } }, { "claim": { "claim_id": "claim-del-valle-connectivity-warning", "evidence_ids": [ "evidence-del-valle-connectivity-warning" ], "predicate": "connectivity_warning", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": { "cell_service": "not_available_per_source_warning", "wifi": "not_available_per_source_warning" } }, "evidence": [ { "claim_id": "claim-del-valle-connectivity-warning", "evidence_id": "evidence-del-valle-connectivity-warning", "notes": "Treat as a planning warning from the booking page, not a coverage guarantee for every carrier and location.", "observation_id": "observation-del-valle-tents-connectivity", "stance": "supports" } ], "observations": [ { "artifact_refs": [ "Additional Information" ], "content": "The live page places no numeric limit on tents but requires them to be on dirt or designated tent pads and prohibits tents on lawns. It also warns that cell service and Wi-Fi are unavailable.", "observation_id": "observation-del-valle-tents-connectivity", "observed_at": null, "observer": "Wayproof live Chrome source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-dogs", "evidence_ids": [ "evidence-del-valle-dogs", "evidence-ordinance38-dog-rules" ], "predicate": "dog_rules", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": { "confined_during_quiet_hours": true, "excluded_places": [ "swim_beach", "swim_area", "cabins", "select_trails" ], "leash_in_developed_areas": true, "maximum_per_site": 3, "trained_service_animal_exception": true, "unattended_allowed": false } }, "evidence": [ { "claim_id": "claim-del-valle-dogs", "evidence_id": "evidence-del-valle-dogs", "notes": "", "observation_id": "observation-del-valle-dogs", "stance": "supports" }, { "claim_id": "claim-del-valle-dogs", "evidence_id": "evidence-ordinance38-dog-rules", "notes": "Supports leash, maximum-number, unattended, and water-exclusion portions; other claim fields come from campground-specific evidence.", "observation_id": "observation-ebrpd-ordinance-38-dogs", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page permits at most three dogs per campsite, requires leashes in campgrounds and developed areas, requires confinement in a vehicle or tent during quiet hours, prohibits unattended dogs, and excludes dogs other than trained service animals from swim beaches, swim areas, cabins, and select trails.", "observation_id": "observation-del-valle-dogs", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [ "PDF pages 25-27" ], "content": "Sections 801.1-801.3 prohibit dog swimming at Lake Del Valle from Oak Point north to the East Marina; require leashes in developed areas including campgrounds; cap leashes at six feet and dogs at three per person; and require campground animals to be attended and leashed or confined.", "observation_id": "observation-ebrpd-ordinance-38-dogs", "observed_at": "2023-09-01T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-ordinance-38-september-2023" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/sites/default/files/Ord38-09052023FINAL.pdf", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-ordinance-38-september-2023" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-fire-rules", "evidence_ids": [ "evidence-del-valle-fire-rules", "evidence-ordinance38-fire-rules" ], "predicate": "fire_rules", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": { "adult_attendance_required": true, "designated_areas_only": true, "extinguish_before_departure": true, "subject_to_current_restrictions": true, "wood_collection_allowed": false } }, "evidence": [ { "claim_id": "claim-del-valle-fire-rules", "evidence_id": "evidence-del-valle-fire-rules", "notes": "", "observation_id": "observation-del-valle-fire-smoking", "stance": "supports" }, { "claim_id": "claim-del-valle-fire-rules", "evidence_id": "evidence-ordinance38-fire-rules", "notes": "Supports designated-area, attendance, extinguishing, and changing-restriction portions; it does not address wood collection.", "observation_id": "observation-ebrpd-ordinance-38-fire-smoking", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Fire restrictions may apply. Fires are allowed only in designated areas, must use commercially purchased wood, processed logs, or cut lumber, must remain attended by an adult, and must be extinguished before departure. Collecting wood, smoking, and vaping are prohibited.", "observation_id": "observation-del-valle-fire-smoking", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [ "PDF page 7" ], "content": "Sections 404-404.3 limit open fires to designated facilities, prohibit unattended fires, allow escalation during fire season, and prohibit smoking and vaping throughout the District.", "observation_id": "observation-ebrpd-ordinance-38-fire-smoking", "observed_at": "2023-09-01T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-ordinance-38-september-2023" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/sites/default/files/Ord38-09052023FINAL.pdf", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-ordinance-38-september-2023" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-gate-hours", "evidence_ids": [ "evidence-del-valle-gate-hours" ], "predicate": "gate_hours", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": { "closes": "22:00", "opens": "08:00" } }, "evidence": [ { "claim_id": "claim-del-valle-gate-hours", "evidence_id": "evidence-del-valle-gate-hours", "notes": "", "observation_id": "observation-del-valle-gates-hours", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The campground gates are locked from 10:00 PM to 8:00 AM, and the park entrance and campground gates close daily at 10:00 PM.", "observation_id": "observation-del-valle-gates-hours", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-generators-prohibited", "evidence_ids": [ "evidence-del-valle-generators-prohibited" ], "predicate": "generators_allowed", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": false }, "evidence": [ { "claim_id": "claim-del-valle-generators-prohibited", "evidence_id": "evidence-del-valle-generators-prohibited", "notes": "", "observation_id": "observation-del-valle-quiet-generators", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Quiet hours are 10:00 PM to 7:00 AM. The page prohibits generators, including a separate statement that gas generators are not allowed.", "observation_id": "observation-del-valle-quiet-generators", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-family-capacity", "evidence_ids": [ "evidence-del-valle-family-capacity", "evidence-ordinance38-family-capacity" ], "predicate": "people_per_family_site", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": 8 }, "evidence": [ { "claim_id": "claim-del-valle-family-capacity", "evidence_id": "evidence-del-valle-family-capacity", "notes": "", "observation_id": "observation-del-valle-family-capacity-stays-vehicles", "stance": "supports" }, { "claim_id": "claim-del-valle-family-capacity", "evidence_id": "evidence-ordinance38-family-capacity", "notes": "Section 400.3(a).", "observation_id": "observation-ebrpd-ordinance-38-camping", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Family campsites allow up to eight people and two vehicles. Family camping is limited to 15 consecutive nights and 30 total nights per year, with 48 hours separating reservations after a 15-night stay.", "observation_id": "observation-del-valle-family-capacity-stays-vehicles", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [ "PDF pages 5-6" ], "content": "Revised September 2023. Sections 400.1-400.6 require a valid permit in designated camping areas; limit family sites to eight occupants, 15 consecutive days and 30 days per year with a two-day break; regulate disturbing generators and sound devices; govern juveniles; and apply camping rules to tent, RV, cabin, and walk-in camping.", "observation_id": "observation-ebrpd-ordinance-38-camping", "observed_at": "2023-09-01T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-ordinance-38-september-2023" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/sites/default/files/Ord38-09052023FINAL.pdf", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-ordinance-38-september-2023" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-quiet-hours", "evidence_ids": [ "evidence-del-valle-quiet-hours" ], "predicate": "quiet_hours", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": { "ends": "07:00", "starts": "22:00" } }, "evidence": [ { "claim_id": "claim-del-valle-quiet-hours", "evidence_id": "evidence-del-valle-quiet-hours", "notes": "", "observation_id": "observation-del-valle-quiet-generators", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Quiet hours are 10:00 PM to 7:00 AM. The page prohibits generators, including a separate statement that gas generators are not allowed.", "observation_id": "observation-del-valle-quiet-generators", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-family-booking-window", "evidence_ids": [ "evidence-del-valle-family-booking-window" ], "predicate": "reservation_window", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": { "channel": "online", "maximum_advance_weeks": 12, "minimum_advance_hours": 48 } }, "evidence": [ { "claim_id": "claim-del-valle-family-booking-window", "evidence_id": "evidence-del-valle-family-booking-window", "notes": "", "observation_id": "observation-del-valle-family-booking", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Tent or RV family campsites at Del Valle may be reserved online from 48 hours through 12 weeks before arrival; no more than two family campsites may be reserved for the same date per household, primary occupant, customer name, or registered vehicles.", "observation_id": "observation-del-valle-family-booking", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-campground-sanitation", "evidence_ids": [ "evidence-del-valle-campground-sanitation", "evidence-del-valle-ebrpd-campground-sanitation" ], "predicate": "shared_facilities", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": [ "toilets", "showers" ] }, "evidence": [ { "claim_id": "claim-del-valle-campground-sanitation", "evidence_id": "evidence-del-valle-campground-sanitation", "notes": "", "observation_id": "observation-del-valle-campground-inventory", "stance": "supports" }, { "claim_id": "claim-del-valle-campground-sanitation", "evidence_id": "evidence-del-valle-ebrpd-campground-sanitation", "notes": "", "observation_id": "observation-del-valle-ebrpd-campground", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page describes Del Valle Family Campground as 150 campsites: 21 RV sites with full hookups, 124 drive-up tent sites, and five cabins, served by centrally located toilets and showers.", "observation_id": "observation-del-valle-campground-inventory", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [], "content": "The EBRPD page states that the family campground has 150 sites, including two accessible sites and 21 sites with water, sewage, and 120-volt 50/30-amp electrical hookups; toilets and showers are centrally located. It separately states that five cabin sites take up to eight people and sleep five.", "observation_id": "observation-del-valle-ebrpd-campground", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-campground-inventory", "evidence_ids": [ "evidence-del-valle-campground-inventory", "evidence-del-valle-ebrpd-campground-inventory", "evidence-del-valle-camping-current-inventory" ], "predicate": "site_inventory", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": { "cabins": 5, "drive_up_tent": 124, "rv_full_hookup": 21, "total": 150 } }, "evidence": [ { "claim_id": "claim-del-valle-campground-inventory", "evidence_id": "evidence-del-valle-campground-inventory", "notes": "", "observation_id": "observation-del-valle-campground-inventory", "stance": "supports" }, { "claim_id": "claim-del-valle-campground-inventory", "evidence_id": "evidence-del-valle-ebrpd-campground-inventory", "notes": "", "observation_id": "observation-del-valle-ebrpd-campground", "stance": "supports" }, { "claim_id": "claim-del-valle-campground-inventory", "evidence_id": "evidence-del-valle-camping-current-inventory", "notes": "", "observation_id": "observation-del-valle-camping-inventory", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page describes Del Valle Family Campground as 150 campsites: 21 RV sites with full hookups, 124 drive-up tent sites, and five cabins, served by centrally located toilets and showers.", "observation_id": "observation-del-valle-campground-inventory", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [], "content": "The EBRPD page states that the family campground has 150 sites, including two accessible sites and 21 sites with water, sewage, and 120-volt 50/30-amp electrical hookups; toilets and showers are centrally located. It separately states that five cabin sites take up to eight people and sleep five.", "observation_id": "observation-del-valle-ebrpd-campground", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "The current camping page lists 150 family sites: 21 full-hookup RV sites, 124 drive-up tent sites, and five cabins; all family sites allow at most eight people and two vehicles.", "observation_id": "observation-del-valle-camping-inventory", "observed_at": null, "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-camping" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/parks/del-valle/camping", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-camping" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } }, { "claim": { "claim_id": "claim-del-valle-family-vehicles", "evidence_ids": [ "evidence-del-valle-family-vehicles", "evidence-ordinance38-family-vehicles" ], "predicate": "vehicles_per_family_site", "spatial_scope_ids": [ "scope-del-valle-family-campground" ], "subject_id": "campground-del-valle-family", "temporal_scope": null, "value": 2 }, "evidence": [ { "claim_id": "claim-del-valle-family-vehicles", "evidence_id": "evidence-del-valle-family-vehicles", "notes": "", "observation_id": "observation-del-valle-family-capacity-stays-vehicles", "stance": "supports" }, { "claim_id": "claim-del-valle-family-vehicles", "evidence_id": "evidence-ordinance38-family-vehicles", "notes": "Section 901.1(q).", "observation_id": "observation-ebrpd-ordinance-38-parking", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Family campsites allow up to eight people and two vehicles. Family camping is limited to 15 consecutive nights and 30 total nights per year, with 48 hours separating reservations after a 15-night stay.", "observation_id": "observation-del-valle-family-capacity-stays-vehicles", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [ "PDF page 32" ], "content": "Section 901.1 prohibits more than two vehicles at a campground site and parking off the paved pad.", "observation_id": "observation-ebrpd-ordinance-38-parking", "observed_at": "2023-09-01T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-ordinance-38-september-2023" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/sites/default/files/Ord38-09052023FINAL.pdf", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-ordinance-38-september-2023" } ], "subject": { "entity_id": "campground-del-valle-family", "kind": "campground", "name": "Del Valle Family Campground" } } ], "title": "Camping" }, { "claims": [ { "claim": { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_ids": [ "evidence-del-valle-ebrpd-east-beach-algae", "evidence-ebrpd-algae-east-beach-caution", "evidence-ebrpd-swimming-east-caution", "evidence-ebrpd-water-quality-east-caution" ], "predicate": "water_quality_advisory", "spatial_scope_ids": [ "scope-del-valle-east-beach" ], "subject_id": "beach-del-valle-east", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "caution" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-del-valle-ebrpd-east-beach-algae", "notes": "", "observation_id": "observation-del-valle-ebrpd-water-quality", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-algae-east-beach-caution", "notes": "", "observation_id": "observation-ebrpd-algae-current-del-valle", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-swimming-east-caution", "notes": "", "observation_id": "observation-ebrpd-swimming-current-beaches", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-east-beach-algae", "evidence_id": "evidence-ebrpd-water-quality-east-caution", "notes": "", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the EBRPD page posted a blue-green algae Caution Advisory for the East Swim Beach and stated that the West Swim Beach had no water because of low lake levels.", "observation_id": "observation-del-valle-ebrpd-water-quality", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "At retrieval, the current-conditions table listed a Caution Advisory for the Del Valle East Swim Beach and no advisory for the West Swim Beach, where it reported no water because of low lake levels.", "observation_id": "observation-ebrpd-algae-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" }, { "artifact_refs": [], "content": "At retrieval, East Beach had a blue-green algae Caution Advisory and West Beach had no water because of low lake levels.", "observation_id": "observation-ebrpd-swimming-current-beaches", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-swimming" }, { "artifact_refs": [], "content": "At retrieval, the table listed a Caution algae advisory at Del Valle East Beach and no advisory at West Beach, where there was no water because of low lake levels.", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-current-water-quality" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" }, { "locator": "https://www.ebparks.org/recreation/swimming/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-swimming" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-current-water-quality" } ], "subject": { "entity_id": "beach-del-valle-east", "kind": "swim_beach", "name": "Del Valle East Swim Beach" } }, { "claim": { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_ids": [ "evidence-del-valle-ebrpd-west-beach-water", "evidence-ebrpd-algae-west-beach-no-water", "evidence-ebrpd-swimming-west-no-water", "evidence-ebrpd-water-quality-west-no-water" ], "predicate": "water_availability", "spatial_scope_ids": [ "scope-del-valle-west-beach" ], "subject_id": "beach-del-valle-west", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": "no_water" }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_id": "evidence-del-valle-ebrpd-west-beach-water", "notes": "", "observation_id": "observation-del-valle-ebrpd-water-quality", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_id": "evidence-ebrpd-algae-west-beach-no-water", "notes": "", "observation_id": "observation-ebrpd-algae-current-del-valle", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_id": "evidence-ebrpd-swimming-west-no-water", "notes": "", "observation_id": "observation-ebrpd-swimming-current-beaches", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-west-beach-water", "evidence_id": "evidence-ebrpd-water-quality-west-no-water", "notes": "", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the EBRPD page posted a blue-green algae Caution Advisory for the East Swim Beach and stated that the West Swim Beach had no water because of low lake levels.", "observation_id": "observation-del-valle-ebrpd-water-quality", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "At retrieval, the current-conditions table listed a Caution Advisory for the Del Valle East Swim Beach and no advisory for the West Swim Beach, where it reported no water because of low lake levels.", "observation_id": "observation-ebrpd-algae-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-blue-green-algae" }, { "artifact_refs": [], "content": "At retrieval, East Beach had a blue-green algae Caution Advisory and West Beach had no water because of low lake levels.", "observation_id": "observation-ebrpd-swimming-current-beaches", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-swimming" }, { "artifact_refs": [], "content": "At retrieval, the table listed a Caution algae advisory at Del Valle East Beach and no advisory at West Beach, where there was no water because of low lake levels.", "observation_id": "observation-ebrpd-water-quality-current-del-valle", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-current-water-quality" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-blue-green-algae" }, { "locator": "https://www.ebparks.org/recreation/swimming/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-swimming" }, { "locator": "https://www.ebparks.org/natural-resources/water-quality", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-current-water-quality" } ], "subject": { "entity_id": "beach-del-valle-west", "kind": "swim_beach", "name": "Del Valle West Swim Beach" } }, { "claim": { "claim_id": "claim-del-valle-boat-inspection", "evidence_ids": [ "evidence-del-valle-boat-inspection", "evidence-del-valle-ebrpd-boat-inspection", "evidence-ebrpd-mussels-del-valle-inspection" ], "predicate": "boat_inspection_required", "spatial_scope_ids": [ "scope-lake-del-valle" ], "subject_id": "lake-del-valle", "temporal_scope": null, "value": true }, "evidence": [ { "claim_id": "claim-del-valle-boat-inspection", "evidence_id": "evidence-del-valle-boat-inspection", "notes": "", "observation_id": "observation-del-valle-boating-swimming", "stance": "supports" }, { "claim_id": "claim-del-valle-boat-inspection", "evidence_id": "evidence-del-valle-ebrpd-boat-inspection", "notes": "", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "stance": "supports" }, { "claim_id": "claim-del-valle-boat-inspection", "evidence_id": "evidence-ebrpd-mussels-del-valle-inspection", "notes": "", "observation_id": "observation-ebrpd-mussels-program-scope", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page lists two swimming beaches, lifeguards during posted periods, boat rentals, and a public launch for boats of any size; it warns that boaters must comply with the Invasive Mussel Prevention Program and mandatory inspections.", "observation_id": "observation-del-valle-boating-swimming", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [], "content": "At retrieval, the page stated that a boat launched at Contra Loma would be quarantined for 30 days from inspected lakes including Del Valle; vessels must be cleaned, drained, and dried, and boat bands are honored only by the lake that issued them. It also requires campground guests with watercraft to complete inspection before campground check-in.", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "EBRPD requires watercraft inspection at Contra Loma, Del Valle, Lake Chabot, Quarry Lakes, and Shadow Cliffs. Covered craft include boats, kayaks, canoes, sailboats, inflatable craft, and every form of floating board. Campers with watercraft must complete inspection before campground check-in.", "observation_id": "observation-ebrpd-mussels-program-scope", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-invasive-mussel-program" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-invasive-mussel-program" } ], "subject": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" } }, { "claim": { "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine", "evidence_ids": [ "evidence-del-valle-ebrpd-contra-loma-quarantine", "evidence-ebrpd-mussels-contra-loma-quarantine" ], "predicate": "cross_lake_boat_quarantine", "spatial_scope_ids": [ "scope-lake-del-valle" ], "subject_id": "lake-del-valle", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": { "duration_days": 30, "restricted_destination": "Lake Del Valle", "trigger_lake": "Contra Loma Reservoir" } }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine", "evidence_id": "evidence-del-valle-ebrpd-contra-loma-quarantine", "notes": "", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine", "evidence_id": "evidence-ebrpd-mussels-contra-loma-quarantine", "notes": "", "observation_id": "observation-ebrpd-mussels-contra-loma", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the page stated that a boat launched at Contra Loma would be quarantined for 30 days from inspected lakes including Del Valle; vessels must be cleaned, drained, and dried, and boat bands are honored only by the lake that issued them. It also requires campground guests with watercraft to complete inspection before campground check-in.", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "The current notice reports golden mussels at Contra Loma and states that a boat launched there is quarantined for 30 days from inspected lakes including Del Valle. All vessels should be cleaned, drained, and dried, and bands are honored only at their issuing lake.", "observation_id": "observation-ebrpd-mussels-contra-loma", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-invasive-mussel-program" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-invasive-mussel-program" } ], "subject": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" } }, { "claim": { "claim_id": "claim-del-valle-ebrpd-boating-fees", "evidence_ids": [ "evidence-del-valle-ebrpd-boating-fees" ], "predicate": "published_boating_fees", "spatial_scope_ids": [ "scope-lake-del-valle" ], "subject_id": "lake-del-valle", "temporal_scope": null, "value": { "motorized_inspection_usd": 10, "motorized_launch_usd": 5, "non_motorized_inspection_usd": 5, "non_motorized_launch_usd": 3 } }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-boating-fees", "evidence_id": "evidence-del-valle-ebrpd-boating-fees", "notes": "", "observation_id": "observation-del-valle-ebrpd-boating", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page lists launch and inspection fees of $5 and $10 for motorized vessels and $3 and $5 for non-motorized vessels, a lake-wide 10 mph speed limit, and a prohibition on hydrofoils and E-Foils. It permits any-size boats at the public ramp.", "observation_id": "observation-del-valle-ebrpd-boating", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" } ], "subject": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" } }, { "claim": { "claim_id": "claim-del-valle-swimming", "evidence_ids": [ "evidence-del-valle-swimming" ], "predicate": "published_swimming_facilities", "spatial_scope_ids": [ "scope-lake-del-valle" ], "subject_id": "lake-del-valle", "temporal_scope": null, "value": { "beaches": 2, "lifeguards": "during posted periods" } }, "evidence": [ { "claim_id": "claim-del-valle-swimming", "evidence_id": "evidence-del-valle-swimming", "notes": "", "observation_id": "observation-del-valle-boating-swimming", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page lists two swimming beaches, lifeguards during posted periods, boat rentals, and a public launch for boats of any size; it warns that boaters must comply with the Invasive Mussel Prevention Program and mandatory inspections.", "observation_id": "observation-del-valle-boating-swimming", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" } ], "subject": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" } }, { "claim": { "claim_id": "claim-ebrpd-swimming-del-valle-safety", "evidence_ids": [ "evidence-ebrpd-swimming-del-valle-safety" ], "predicate": "swimming_safety_guidance", "spatial_scope_ids": [ "scope-lake-del-valle" ], "subject_id": "lake-del-valle", "temporal_scope": null, "value": { "check_posted_signs": true, "days_to_avoid_after_rain": 3, "keep_dogs_away": true, "keep_water_out_of_mouth": true, "shower_and_dry_after": true } }, "evidence": [ { "claim_id": "claim-ebrpd-swimming-del-valle-safety", "evidence_id": "evidence-ebrpd-swimming-del-valle-safety", "notes": "", "observation_id": "observation-ebrpd-swimming-safety", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page advises keeping water out of the mouth, showering and towel-drying promptly after swimming, avoiding lake swimming for three days after rain, checking posted water-quality signs, and keeping dogs away from the water.", "observation_id": "observation-ebrpd-swimming-safety", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-swimming" } ], "sources": [ { "locator": "https://www.ebparks.org/recreation/swimming/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-swimming" } ], "subject": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" } }, { "claim": { "claim_id": "claim-del-valle-ebrpd-clean-drain-dry", "evidence_ids": [ "evidence-del-valle-ebrpd-clean-drain-dry", "evidence-ebrpd-mussels-clean-drain-dry" ], "predicate": "watercraft_preparation", "spatial_scope_ids": [ "scope-lake-del-valle" ], "subject_id": "lake-del-valle", "temporal_scope": { "ends_on": "2026-09-20", "starts_on": "2026-09-20" }, "value": [ "clean", "drain", "dry" ] }, "evidence": [ { "claim_id": "claim-del-valle-ebrpd-clean-drain-dry", "evidence_id": "evidence-del-valle-ebrpd-clean-drain-dry", "notes": "", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "stance": "supports" }, { "claim_id": "claim-del-valle-ebrpd-clean-drain-dry", "evidence_id": "evidence-ebrpd-mussels-clean-drain-dry", "notes": "", "observation_id": "observation-ebrpd-mussels-contra-loma", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "At retrieval, the page stated that a boat launched at Contra Loma would be quarantined for 30 days from inspected lakes including Del Valle; vessels must be cleaned, drained, and dried, and boat bands are honored only by the lake that issued them. It also requires campground guests with watercraft to complete inspection before campground check-in.", "observation_id": "observation-del-valle-ebrpd-golden-mussel", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "The current notice reports golden mussels at Contra Loma and states that a boat launched there is quarantined for 30 days from inspected lakes including Del Valle. All vessels should be cleaned, drained, and dried, and bands are honored only at their issuing lake.", "observation_id": "observation-ebrpd-mussels-contra-loma", "observed_at": "2026-09-20T00:00:00+00:00", "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-invasive-mussel-program" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-invasive-mussel-program" } ], "subject": { "entity_id": "lake-del-valle", "kind": "lake", "name": "Lake Del Valle" } } ], "title": "Swimming, boating, and lake conditions" }, { "claims": [ { "claim": { "claim_id": "claim-del-valle-ohlone-gateway", "evidence_ids": [ "evidence-del-valle-ohlone-gateway", "evidence-del-valle-ebrpd-ohlone-gateway", "evidence-ebrpd-ohlone-gateway-current" ], "predicate": "eastern_gateway", "spatial_scope_ids": [ "scope-del-valle-park" ], "subject_id": "trail-ohlone-wilderness", "temporal_scope": null, "value": "park-del-valle-regional-park" }, "evidence": [ { "claim_id": "claim-del-valle-ohlone-gateway", "evidence_id": "evidence-del-valle-ohlone-gateway", "notes": "", "observation_id": "observation-del-valle-ohlone-permit-statement", "stance": "supports" }, { "claim_id": "claim-del-valle-ohlone-gateway", "evidence_id": "evidence-del-valle-ebrpd-ohlone-gateway", "notes": "", "observation_id": "observation-del-valle-ebrpd-identity", "stance": "supports" }, { "claim_id": "claim-del-valle-ohlone-gateway", "evidence_id": "evidence-ebrpd-ohlone-gateway-current", "notes": "", "observation_id": "observation-ebrpd-ohlone-trail", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The page calls Del Valle the eastern gateway to the Ohlone Wilderness Trail, describes the trail as 28 miles connecting to Sunol and Mission Peak, and states that permits are required on portions and may be purchased at the park entrance kiosk; it separately states that backpack reservations remain available.", "observation_id": "observation-del-valle-ohlone-permit-statement", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "artifact_refs": [], "content": "The EBRPD page places Del Valle ten miles south of Livermore, describes a five-mile lake in a 4,395-acre park, gives the address 7000 Del Valle Road, and calls the park the eastern gateway to the 28-mile Ohlone Wilderness Trail.", "observation_id": "observation-del-valle-ebrpd-identity", "observed_at": null, "observer": "user-supplied page transcription", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-del-valle-park-page" }, { "artifact_refs": [], "content": "The 28-mile Ohlone Wilderness Trail is open to hikers and equestrians, not bicycles or motor vehicles, and crosses Ohlone Wilderness, Mission Peak, Sunol, Del Valle, and leased watershed lands where users must stay in the trail corridor.", "observation_id": "observation-ebrpd-ohlone-trail", "observed_at": null, "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-ohlone-park-page" } ], "sources": [ { "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-del-valle-overview-110003" }, { "locator": "https://www.ebparks.org/parks/del-valle", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-del-valle-park-page" }, { "locator": "https://www.ebparks.org/parks/ohlone", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-ohlone-park-page" } ], "subject": { "entity_id": "trail-ohlone-wilderness", "kind": "trail", "name": "Ohlone Wilderness Trail" } }, { "claim": { "claim_id": "claim-ohlone-overnight-reservation", "evidence_ids": [ "evidence-ohlone-overnight-reservation", "evidence-ebrpd-sunol-ohlone-overnight-reservation", "evidence-reserveamerica-sunol-ohlone-overnight-reservation" ], "predicate": "overnight_camping_reservation", "spatial_scope_ids": [ "scope-ohlone-wilderness-trail" ], "subject_id": "trail-ohlone-wilderness", "temporal_scope": null, "value": { "channel": "phone", "designated_sites_only": true, "minimum_advance_days": 2, "required": true } }, "evidence": [ { "claim_id": "claim-ohlone-overnight-reservation", "evidence_id": "evidence-ohlone-overnight-reservation", "notes": "", "observation_id": "observation-ebrpd-ohlone-camping", "stance": "supports" }, { "claim_id": "claim-ohlone-overnight-reservation", "evidence_id": "evidence-ebrpd-sunol-ohlone-overnight-reservation", "notes": "The Sunol park page corroborates designated-site reservation and two-business-day advance requirements.", "observation_id": "observation-ebrpd-sunol-ohlone-policy", "stance": "supports" }, { "claim_id": "claim-ohlone-overnight-reservation", "evidence_id": "evidence-reserveamerica-sunol-ohlone-overnight-reservation", "notes": "The booking overview corroborates the overnight reservation requirement and expresses the lead time as 48 hours.", "observation_id": "observation-reserveamerica-sunol-overview", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Overnight use requires a separate reservation for a designated trail campsite, made by phone at least two days in advance. Reserved overnight parking is allowed at Del Valle, Sunol, and Mission Peak parking lots.", "observation_id": "observation-ebrpd-ohlone-camping", "observed_at": null, "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-ohlone-park-page" }, { "artifact_refs": [ "Ohlone Wilderness Trail" ], "content": "The page states that as of January 1, 2026 an Ohlone permit is not required and no additional permits will be sold. Overnight backpacking reservations remain required, and designated Ohlone Trail campsites require advance reservation two or more business days ahead.", "observation_id": "observation-ebrpd-sunol-ohlone-policy", "observed_at": null, "observer": "Wayproof live source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-sunol-park-page" }, { "artifact_refs": [ "Important Information", "Description", "Recreation", "Facilities" ], "content": "The rendered overview identifies Sunol as an EBRPD campsite facility with limited backpack sites, describes the Ohlone Wilderness Trail as a hiking destination, and requires backpack reservations for overnight stays at least 48 hours in advance.", "observation_id": "observation-reserveamerica-sunol-overview", "observed_at": null, "observer": "Wayproof live Chrome source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-reserveamerica-sunol-overview" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/ohlone", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-ohlone-park-page" }, { "locator": "https://www.ebparks.org/parks/sunol", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-sunol-park-page" }, { "locator": "https://www.reserveamerica.com/explore/sunol/EB/110028/overview", "publisher": "ReserveAmerica / East Bay Regional Park District", "source_id": "source-reserveamerica-sunol-overview" } ], "subject": { "entity_id": "trail-ohlone-wilderness", "kind": "trail", "name": "Ohlone Wilderness Trail" } }, { "claim": { "claim_id": "claim-ohlone-trail-permit-not-required-2026", "evidence_ids": [ "evidence-ohlone-trail-permit-not-required-2026", "evidence-ebrpd-sunol-ohlone-permit-not-required-2026" ], "predicate": "trail_permit_required", "spatial_scope_ids": [ "scope-ohlone-wilderness-trail" ], "subject_id": "trail-ohlone-wilderness", "temporal_scope": { "ends_on": null, "starts_on": "2026-01-01" }, "value": false }, "evidence": [ { "claim_id": "claim-ohlone-trail-permit-not-required-2026", "evidence_id": "evidence-ohlone-trail-permit-not-required-2026", "notes": "", "observation_id": "observation-ebrpd-ohlone-permit-2026", "stance": "supports" }, { "claim_id": "claim-ohlone-trail-permit-not-required-2026", "evidence_id": "evidence-ebrpd-sunol-ohlone-permit-not-required-2026", "notes": "The Sunol park page independently corroborates the Ohlone park page's effective-date statement.", "observation_id": "observation-ebrpd-sunol-ohlone-policy", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "As of 2026-01-01, an Ohlone trail permit is not required and no additional permits will be sold. An overnight backpacking reservation is still required.", "observation_id": "observation-ebrpd-ohlone-permit-2026", "observed_at": "2026-01-01T00:00:00+00:00", "observer": "Wayproof source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-ohlone-park-page" }, { "artifact_refs": [ "Ohlone Wilderness Trail" ], "content": "The page states that as of January 1, 2026 an Ohlone permit is not required and no additional permits will be sold. Overnight backpacking reservations remain required, and designated Ohlone Trail campsites require advance reservation two or more business days ahead.", "observation_id": "observation-ebrpd-sunol-ohlone-policy", "observed_at": null, "observer": "Wayproof live source review", "retrieved_at": "2026-09-20T00:00:00+00:00", "source_id": "source-ebrpd-sunol-park-page" } ], "sources": [ { "locator": "https://www.ebparks.org/parks/ohlone", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-ohlone-park-page" }, { "locator": "https://www.ebparks.org/parks/sunol", "publisher": "East Bay Regional Park District", "source_id": "source-ebrpd-sunol-park-page" } ], "subject": { "entity_id": "trail-ohlone-wilderness", "kind": "trail", "name": "Ohlone Wilderness Trail" } } ], "title": "Ohlone Wilderness Trail" } ], "type": "destination" }