{ "answerability": "evidence_backed_claims_available", "claims": [ { "claim": { "claim_id": "claim-emigrant-crabtree-camp-conditions", "evidence_ids": [ "evidence-emigrant-crabtree-camp-conditions" ], "predicate": "pretrip_current_conditions_recheck", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake" ], "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null, "value": { "current_status": "unknown", "required": true, "topics": [ "access road", "trail and crossings", "snow", "water", "fire and closures" ] } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-camp-conditions", "evidence_id": "evidence-emigrant-crabtree-camp-conditions", "notes": "", "observation_id": "observation-emigrant-crabtree-camp-conditions", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Forest alert index requires current order/map review. Historical mapped connections and hiking descriptions do not establish present road, trail, snow, crossing or water conditions.", "observation_id": "observation-emigrant-crabtree-camp-conditions", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-alerts" } ], "sources": [ { "locator": "https://www.fs.usda.gov/r05/stanislaus/alerts", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-alerts" } ], "subject": { "entity_id": "route-emigrant-crabtree-camp-lake", "kind": "route", "name": "Crabtree to Camp Lake" } }, { "claim": { "claim_id": "claim-emigrant-crabtree-camp-favorite-hikes", "evidence_ids": [ "evidence-emigrant-crabtree-camp-favorite-hikes" ], "predicate": "published_approach_distance_report", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake" ], "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null, "value": { "endpoint_precision": "lake destination; exact point unspecified", "reported_one_way_miles": 3, "source_edition": "2018-11", "status": "conflicting reports; not a resolved route total" } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-camp-favorite-hikes", "evidence_id": "evidence-emigrant-crabtree-camp-favorite-hikes", "notes": "", "observation_id": "observation-emigrant-crabtree-camp-favorite-hikes", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "2018-11, ROG 16-41 Day Hikes, page 2: Camp Lake 3 miles from Crabtree. Endpoint precision is not specified; editions disagree.", "observation_id": "observation-emigrant-crabtree-camp-favorite-hikes", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-favorite-hikes" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/publication/Favorite%20Hiking%20Trails.pdf", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-favorite-hikes" } ], "subject": { "entity_id": "route-emigrant-crabtree-camp-lake", "kind": "route", "name": "Crabtree to Camp Lake" } }, { "claim": { "claim_id": "claim-emigrant-crabtree-camp-mileage-table", "evidence_ids": [ "evidence-emigrant-crabtree-camp-mileage-table" ], "predicate": "published_approach_distance_report", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake" ], "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null, "value": { "endpoint_precision": "lake destination; exact point unspecified", "reported_one_way_miles": 2.6, "source_edition": "2012-06", "status": "conflicting reports; not a resolved route total" } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-camp-mileage-table", "evidence_id": "evidence-emigrant-crabtree-camp-mileage-table", "notes": "", "observation_id": "observation-emigrant-crabtree-camp-mileage-table", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "2012-06, ROG 16-27 Crabtree column, page 1: Camp Lake 2.6 miles from Crabtree. Endpoint precision is not specified; editions disagree.", "observation_id": "observation-emigrant-crabtree-camp-mileage-table", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-mileage-table" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Trail%20Mileages%20-%20Emigrant%202012.pdf", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-mileage-table" } ], "subject": { "entity_id": "route-emigrant-crabtree-camp-lake", "kind": "route", "name": "Crabtree to Camp Lake" } }, { "claim": { "claim_id": "claim-emigrant-crabtree-lake-valley-junction-milepoint", "evidence_ids": [ "evidence-emigrant-crabtree-lake-valley-junction-milepoint" ], "predicate": "published_milepoint", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-node-emigrant-lake-valley-junction", "temporal_scope": null, "value": { "cumulative_miles_from_crabtree": 0.1, "source_edition": "2012-06" } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-lake-valley-junction-milepoint", "evidence_id": "evidence-emigrant-crabtree-lake-valley-junction-milepoint", "notes": "", "observation_id": "observation-emigrant-crabtree-lake-valley-junction-milepoint", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "ROG 16-27 June 2012 page 1, Crabtree column: Lake Valley Trail 0.1 miles. This is a destination milepoint, not an atomic segment distance.", "observation_id": "observation-emigrant-crabtree-lake-valley-junction-milepoint", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-mileage-table" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Trail%20Mileages%20-%20Emigrant%202012.pdf", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-mileage-table" } ], "subject": { "entity_id": "route-node-emigrant-lake-valley-junction", "kind": "route_node", "name": "Lake Valley Trail junction near Crabtree" } }, { "claim": { "claim_id": "claim-emigrant-crabtree-pine-valley-junction-milepoint", "evidence_ids": [ "evidence-emigrant-crabtree-pine-valley-junction-milepoint" ], "predicate": "published_milepoint", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-node-emigrant-pine-valley-junction", "temporal_scope": null, "value": { "cumulative_miles_from_crabtree": 1.4, "source_edition": "2012-06" } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-pine-valley-junction-milepoint", "evidence_id": "evidence-emigrant-crabtree-pine-valley-junction-milepoint", "notes": "", "observation_id": "observation-emigrant-crabtree-pine-valley-junction-milepoint", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "ROG 16-27 June 2012 page 1, Crabtree column: Pine Valley Trail 1.4 miles. This is a destination milepoint, not an atomic segment distance.", "observation_id": "observation-emigrant-crabtree-pine-valley-junction-milepoint", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-mileage-table" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Trail%20Mileages%20-%20Emigrant%202012.pdf", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-mileage-table" } ], "subject": { "entity_id": "route-node-emigrant-pine-valley-junction", "kind": "route_node", "name": "Pine Valley Trail junction on Camp Lake approach" } }, { "claim": { "claim_id": "claim-emigrant-crabtree-legacy-schematic", "evidence_ids": [ "evidence-emigrant-crabtree-legacy-schematic" ], "predicate": "published_schematic_distance_report", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-node-emigrant-pine-valley-junction", "temporal_scope": null, "value": { "camp_bear_branch_miles": 1.0, "crabtree_to_south_junction_miles": 1.3, "endpoint_alignment": "coarse; unresolved", "not_atomic_distance": true, "source_edition": "unknown", "south_junction_toward_camp_miles": 1.3 } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-legacy-schematic", "evidence_id": "evidence-emigrant-crabtree-legacy-schematic", "notes": "", "observation_id": "observation-emigrant-crabtree-legacy-schematic", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Undated Emigrant Wilderness Trail Distances GIF, western panel: Crabtree to an unlabeled south junction is labeled 1.3; the eastward link from that junction toward Camp Lake is also labeled 1.3; Camp/Bear branch 1.0. This coarse schematic omits the Lake Valley junction near Crabtree and does not distinguish the Camp Lake approach from the east-side Bear junction.", "observation_id": "observation-emigrant-crabtree-legacy-schematic", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-trail-map" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/image/emigrant-wilderness-trail-map.gif", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-trail-map" } ], "subject": { "entity_id": "route-node-emigrant-pine-valley-junction", "kind": "route_node", "name": "Pine Valley Trail junction on Camp Lake approach" } }, { "claim": { "claim_id": "claim-emigrant-crabtree-schematic-crabtree-junction", "evidence_ids": [ "evidence-emigrant-crabtree-schematic-crabtree-junction" ], "predicate": "published_schematic_distance_report", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-node-emigrant-pine-valley-junction", "temporal_scope": null, "value": { "endpoint": "first drawn south-side junction; Pine Valley connection on overview", "not_atomic_distance": true, "omitted_branch": "Lake Valley", "qualifier": "estimate", "reported_miles": 1.3 } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-schematic-crabtree-junction", "evidence_id": "evidence-emigrant-crabtree-schematic-crabtree-junction", "notes": "", "observation_id": "observation-emigrant-crabtree-schematic-crabtree-junction", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Emigrant Trail Mileage Diagram (2021 filename), western panel: Crabtree to the first drawn south-side junction is labeled 1.3. Lake Valley branch is omitted. Diagram calls mileages estimates, straightens trail segments and disclaims navigation/scale.", "observation_id": "observation-emigrant-crabtree-schematic-crabtree-junction", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-mileage-diagram" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Emigrant%20Trail%20Mileage%20Diagram%202021.pdf", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-mileage-diagram" } ], "subject": { "entity_id": "route-node-emigrant-pine-valley-junction", "kind": "route_node", "name": "Pine Valley Trail junction on Camp Lake approach" } }, { "claim": { "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley", "evidence_ids": [ "evidence-emigrant-geometry-lake-valley-pine-valley" ], "predicate": "reviewed_route_display_geometry", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley", "temporal_scope": null, "value": { "coordinate_reference_system": "EPSG:4326", "current_route_status": "unknown; pre-trip check required", "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.", "end_coordinate": { "latitude": 38.165350570701605, "longitude": -119.90071919040176 }, "geometry_snapshot": { "feature_id": "usfs-emigrant-lake-valley-pine-valley", "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson", "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d" }, "navigation_grade": false, "route_role": "official_mainline", "source_coordinate_accuracy": "unknown", "source_feature_id": 9428086, "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}", "source_trail_number": "20E16", "source_vertex_range_inclusive": [ 172, 67 ], "start_coordinate": { "latitude": 38.17758396939358, "longitude": -119.90646170977695 } } }, "evidence": [ { "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley", "evidence_id": "evidence-emigrant-geometry-lake-valley-pine-valley", "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.", "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 172 through 67 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. 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Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. 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Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. 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Route names used here are descriptive, not asserted official trail names.", "observation_id": "observation-emigrant-crabtree-camp-profile", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-favorite-hikes" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/publication/Favorite%20Hiking%20Trails.pdf", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-favorite-hikes" } ], "subject": { "entity_id": "route-emigrant-crabtree-camp-lake", "kind": "route", "name": "Crabtree to Camp Lake" } } ], "entity": { "entity_id": "route-emigrant-crabtree-camp-lake", "kind": "route", "name": "Crabtree to Camp Lake" }, "gap_details": [ { "claims": [ { "claim": { "claim_id": "claim-emigrant-geometry-bear-spur", "evidence_ids": [ "evidence-emigrant-geometry-bear-spur" ], "predicate": "reviewed_route_display_geometry", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-segment-emigrant-crabtree-bear-spur", "temporal_scope": null, "value": { "coordinate_reference_system": "EPSG:4326", "current_route_status": "unknown; pre-trip check required", "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.", "end_coordinate": { "latitude": 38.17439691200468, "longitude": -119.86702313700192 }, "geometry_snapshot": { "feature_id": "usfs-emigrant-bear-spur", "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson", "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d" }, "navigation_grade": false, "route_role": "official_mainline", "source_coordinate_accuracy": "unknown", "source_feature_id": 9430557, "source_globalid": "{8497BEEB-8635-4A89-8352-B24C998130DD}", "source_trail_number": "19E09", "source_vertex_range_inclusive": [ 0, 164 ], "start_coordinate": { "latitude": 38.166155721488686, "longitude": -119.87741437071607 } } }, "evidence": [ { "claim_id": "claim-emigrant-geometry-bear-spur", "evidence_id": "evidence-emigrant-geometry-bear-spur", "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.", "observation_id": "observation-emigrant-geometry-bear-spur", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9430557, globalid {8497BEEB-8635-4A89-8352-B24C998130DD}, trail 19E09 BEAR LAKE: reviewed EPSG:4326 source vertices 0 through 164 are retained for display. Source segment_length 1 and gis_miles 0.9720000000000001 describe the original feature, not a computed length for this slice. 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Source segment_length 10.1 and gis_miles 9.942 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-camp-bear-junction", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ], "sources": [ { "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0", "publisher": "USDA Forest Service", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ] }, { "claim": { "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley", "evidence_ids": [ "evidence-emigrant-geometry-lake-valley-pine-valley" ], "predicate": "reviewed_route_display_geometry", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley", "temporal_scope": null, "value": { "coordinate_reference_system": "EPSG:4326", "current_route_status": "unknown; pre-trip check required", "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.", "end_coordinate": { "latitude": 38.165350570701605, "longitude": -119.90071919040176 }, "geometry_snapshot": { "feature_id": "usfs-emigrant-lake-valley-pine-valley", "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson", "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d" }, "navigation_grade": false, "route_role": "official_mainline", "source_coordinate_accuracy": "unknown", "source_feature_id": 9428086, "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}", "source_trail_number": "20E16", "source_vertex_range_inclusive": [ 172, 67 ], "start_coordinate": { "latitude": 38.17758396939358, "longitude": -119.90646170977695 } } }, "evidence": [ { "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley", "evidence_id": "evidence-emigrant-geometry-lake-valley-pine-valley", "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.", "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 172 through 67 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ], "sources": [ { "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0", "publisher": "USDA Forest Service", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ] }, { "claim": { "claim_id": "claim-emigrant-geometry-pine-valley-camp", "evidence_ids": [ "evidence-emigrant-geometry-pine-valley-camp" ], "predicate": "reviewed_route_display_geometry", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp", "temporal_scope": null, "value": { "coordinate_reference_system": "EPSG:4326", "current_route_status": "unknown; pre-trip check required", "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.", "end_coordinate": { "latitude": 38.16518574092221, "longitude": -119.88391532965653 }, "geometry_snapshot": { "feature_id": "usfs-emigrant-pine-valley-camp", "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson", "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d" }, "navigation_grade": false, "route_role": "official_mainline", "source_coordinate_accuracy": "unknown", "source_feature_id": 9428086, "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}", "source_trail_number": "20E16", "source_vertex_range_inclusive": [ 67, 0 ], "start_coordinate": { "latitude": 38.165350570701605, "longitude": -119.90071919040176 } } }, "evidence": [ { "claim_id": "claim-emigrant-geometry-pine-valley-camp", "evidence_id": "evidence-emigrant-geometry-pine-valley-camp", "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.", "observation_id": "observation-emigrant-geometry-pine-valley-camp", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 67 through 0 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-pine-valley-camp", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ], "sources": [ { "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0", "publisher": "USDA Forest Service", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ] }, { "claim": { "claim_id": "claim-emigrant-geometry-start-lake-valley", "evidence_ids": [ "evidence-emigrant-geometry-start-lake-valley" ], "predicate": "reviewed_route_display_geometry", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-segment-emigrant-crabtree-start-lake-valley", "temporal_scope": null, "value": { "coordinate_reference_system": "EPSG:4326", "current_route_status": "unknown; pre-trip check required", "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.", "end_coordinate": { "latitude": 38.17758396939358, "longitude": -119.90646170977695 }, "geometry_snapshot": { "feature_id": "usfs-emigrant-start-lake-valley", "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson", "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d" }, "navigation_grade": false, "route_role": "official_mainline", "source_coordinate_accuracy": "unknown", "source_feature_id": 9428086, "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}", "source_trail_number": "20E16", "source_vertex_range_inclusive": [ 182, 172 ], "start_coordinate": { "latitude": 38.178658657463544, "longitude": -119.9068410709654 } } }, "evidence": [ { "claim_id": "claim-emigrant-geometry-start-lake-valley", "evidence_id": "evidence-emigrant-geometry-start-lake-valley", "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.", "observation_id": "observation-emigrant-geometry-start-lake-valley", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 182 through 172 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-start-lake-valley", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ], "sources": [ { "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0", "publisher": "USDA Forest Service", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ] } ], "entities": [ { "entity_id": "route-emigrant-crabtree-bear-lake", "kind": "route", "name": "Crabtree to Bear Lake" }, { "entity_id": "route-emigrant-crabtree-camp-lake", "kind": "route", "name": "Crabtree to Camp Lake" }, { "entity_id": "route-segment-emigrant-crabtree-bear-spur", "kind": "route_segment", "name": "Bear Spur" }, { "entity_id": "route-segment-emigrant-crabtree-camp-bear-junction", "kind": "route_segment", "name": "Camp Bear Junction" }, { "entity_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley", "kind": "route_segment", "name": "Lake Valley Pine Valley" }, { "entity_id": "route-segment-emigrant-crabtree-pine-valley-camp", "kind": "route_segment", "name": "Pine Valley Camp" }, { "entity_id": "route-segment-emigrant-crabtree-start-lake-valley", "kind": "route_segment", "name": "Start Lake Valley" } ], "history": [ { "action": "REPLACE", "change_set_id": "wp-20261006-emigrant-completion", "evidence_refs": [], "knowledge_gap_refs": [ "gap-emigrant-crabtree-geometry-limitations" ], "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json", "reason": "Add combined southern approaches, boundary, entry-policy and facility audit; preserve uncertainty.", "record_id": "gap-emigrant-crabtree-geometry-limitations", "record_type": "gap", "summary": "Combine five southern/eastern Emigrant approaches with reviewed boundary, jurisdiction-specific planning and campground/operator inventory audit." }, { "action": "ADD", "change_set_id": "wp-20261006-emigrant-crabtree-geometry", "evidence_refs": [], "knowledge_gap_refs": [], "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json", "reason": "Attach reviewed federal display geometry without changing graph or mileage.", "record_id": "gap-emigrant-crabtree-geometry-limitations", "record_type": "gap", "summary": "Make the existing Crabtree lake approaches geographically drawable with reviewed USFS vertices and explicit display limits." }, { "action": "REPLACE", "change_set_id": "wp-20261006-emigrant-western-coverage", "evidence_refs": [], "knowledge_gap_refs": [ "gap-emigrant-crabtree-geometry-limitations" ], "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json", "reason": "Add bounded western approach, geometry and facility evidence; retain unresolved planning limits.", "record_id": "gap-emigrant-crabtree-geometry-limitations", "record_type": "gap", "summary": "Add six drawable western Emigrant approaches with shared physical segments, lake camping evidence and historical trailhead facilities." } ], "navigation": { "next_id": "gap-emigrant-crabtree-junction-mileage", "position": 171, "previous_id": "gap-emigrant-crabtree-camp-mileage", "total": 299 }, "observations": [ { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9430557, globalid {8497BEEB-8635-4A89-8352-B24C998130DD}, trail 19E09 BEAR LAKE: reviewed EPSG:4326 source vertices 0 through 164 are retained for display. Source segment_length 1 and gis_miles 0.9720000000000001 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-bear-spur", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" }, { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9430618, globalid {1D2CDA88-08B4-4846-B5CD-A4ECF893054B}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 836 through 806 are retained for display. Source segment_length 10.1 and gis_miles 9.942 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-camp-bear-junction", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" }, { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 172 through 67 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" }, { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 67 through 0 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-pine-valley-camp", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" }, { "artifact_refs": [], "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 182 through 172 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.", "observation_id": "observation-emigrant-geometry-start-lake-valley", "observed_at": null, "observer": "Wayproof named-feature and official-map review", "retrieved_at": "2026-10-06T00:09:34+00:00", "source_id": "source-usfs-emigrant-nfs-trail-geometry" } ], "record": { "gap_id": "gap-emigrant-crabtree-geometry-limitations", "question": "What does the Crabtree route display geometry establish?", "reason": "Camp western access remains a descriptive source-feature break, not a lake centroid or campsite. Reviewed Crabtree display geometry and Emigrant PAD-US boundary are published. Source accuracy, current trail alignment and conditions remain unknown; unsnapped Lake Valley mismatch, unreviewed branches, parking/facility connectors and navigation-grade survey remain unresolved.", "related_ids": [ "claim-emigrant-geometry-start-lake-valley", "claim-emigrant-geometry-lake-valley-pine-valley", "claim-emigrant-geometry-pine-valley-camp", "claim-emigrant-geometry-camp-bear-junction", "claim-emigrant-geometry-bear-spur", "route-emigrant-crabtree-camp-lake", "route-emigrant-crabtree-bear-lake" ] }, "record_type": "gap", "related_records": [ { "record": { "claim_id": "claim-emigrant-geometry-start-lake-valley", "evidence_ids": [ "evidence-emigrant-geometry-start-lake-valley" ], "predicate": "reviewed_route_display_geometry", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-segment-emigrant-crabtree-start-lake-valley", "temporal_scope": null, "value": { "coordinate_reference_system": "EPSG:4326", "current_route_status": "unknown; 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pre-trip check required", "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.", "end_coordinate": { "latitude": 38.165350570701605, "longitude": -119.90071919040176 }, "geometry_snapshot": { "feature_id": "usfs-emigrant-lake-valley-pine-valley", "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson", "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d" }, "navigation_grade": false, "route_role": "official_mainline", "source_coordinate_accuracy": "unknown", "source_feature_id": 9428086, "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}", "source_trail_number": "20E16", "source_vertex_range_inclusive": [ 172, 67 ], "start_coordinate": { "latitude": 38.17758396939358, "longitude": -119.90646170977695 } } }, "record_id": "claim-emigrant-geometry-lake-valley-pine-valley", "record_type": "claim" }, { "record": { "claim_id": "claim-emigrant-geometry-pine-valley-camp", "evidence_ids": [ "evidence-emigrant-geometry-pine-valley-camp" ], "predicate": "reviewed_route_display_geometry", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake", "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp", "temporal_scope": null, "value": { "coordinate_reference_system": "EPSG:4326", "current_route_status": "unknown; 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Endpoint precision is not specified; editions disagree.", "observation_id": "observation-emigrant-crabtree-camp-favorite-hikes", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-favorite-hikes" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/publication/Favorite%20Hiking%20Trails.pdf", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-favorite-hikes" } ] }, { "claim": { "claim_id": "claim-emigrant-crabtree-camp-mileage-table", "evidence_ids": [ "evidence-emigrant-crabtree-camp-mileage-table" ], "predicate": "published_approach_distance_report", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake" ], "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null, "value": { "endpoint_precision": "lake destination; exact point unspecified", "reported_one_way_miles": 2.6, "source_edition": "2012-06", "status": "conflicting reports; not a resolved route total" } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-camp-mileage-table", "evidence_id": "evidence-emigrant-crabtree-camp-mileage-table", "notes": "", "observation_id": "observation-emigrant-crabtree-camp-mileage-table", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "2012-06, ROG 16-27 Crabtree column, page 1: Camp Lake 2.6 miles from Crabtree. 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Historical mapped connections and hiking descriptions do not establish present road, trail, snow, crossing or water conditions.", "observation_id": "observation-emigrant-crabtree-bear-conditions", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-alerts" } ], "sources": [ { "locator": "https://www.fs.usda.gov/r05/stanislaus/alerts", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-alerts" } ] }, { "claim": { "claim_id": "claim-emigrant-crabtree-bear-profile", "evidence_ids": [ "evidence-emigrant-crabtree-bear-profile" ], "predicate": "route_description", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-bear-lake" ], "subject_id": "route-emigrant-crabtree-bear-lake", "temporal_scope": null, "value": { "current_conditions": "unknown", "directionality": "bidirectional mapped trail", "entry_id": "trailhead-emigrant-crabtree", "name_status": "Wayproof descriptive approach", "objective_id": "waterbody-emigrant-bear-lake", "source_edition": "2018-11" } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-bear-profile", "evidence_id": "evidence-emigrant-crabtree-bear-profile", "notes": "", "observation_id": "observation-emigrant-crabtree-bear-profile", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Favorite Hiking Trails, ROG 16-41, November 2018, page 2 Day Hikes (mileages one way): Bear Lake starts from Crabtree; Bear Lake continues past Camp Lake. Route names used here are descriptive, not asserted official trail names.", "observation_id": "observation-emigrant-crabtree-bear-profile", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-favorite-hikes" } ], "sources": [ { "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/publication/Favorite%20Hiking%20Trails.pdf", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-favorite-hikes" } ] }, { "claim": { "claim_id": "claim-emigrant-crabtree-camp-conditions", "evidence_ids": [ "evidence-emigrant-crabtree-camp-conditions" ], "predicate": "pretrip_current_conditions_recheck", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake" ], "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null, "value": { "current_status": "unknown", "required": true, "topics": [ "access road", "trail and crossings", "snow", "water", "fire and closures" ] } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-camp-conditions", "evidence_id": "evidence-emigrant-crabtree-camp-conditions", "notes": "", "observation_id": "observation-emigrant-crabtree-camp-conditions", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Forest alert index requires current order/map review. Historical mapped connections and hiking descriptions do not establish present road, trail, snow, crossing or water conditions.", "observation_id": "observation-emigrant-crabtree-camp-conditions", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-alerts" } ], "sources": [ { "locator": "https://www.fs.usda.gov/r05/stanislaus/alerts", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-alerts" } ] }, { "claim": { "claim_id": "claim-emigrant-crabtree-camp-profile", "evidence_ids": [ "evidence-emigrant-crabtree-camp-profile" ], "predicate": "route_description", "spatial_scope_ids": [ "scope-route-emigrant-crabtree-camp-lake" ], "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null, "value": { "current_conditions": "unknown", "directionality": "bidirectional mapped trail", "entry_id": "trailhead-emigrant-crabtree", "name_status": "Wayproof descriptive approach", "objective_id": "waterbody-emigrant-camp-lake", "source_edition": "2018-11" } }, "evidence": [ { "claim_id": "claim-emigrant-crabtree-camp-profile", "evidence_id": "evidence-emigrant-crabtree-camp-profile", "notes": "", "observation_id": "observation-emigrant-crabtree-camp-profile", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Favorite Hiking Trails, ROG 16-41, November 2018, page 2 Day Hikes (mileages one way): Camp Lake starts from Crabtree; Bear Lake continues past Camp Lake. 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Historical mapped connections and hiking descriptions do not establish present road, trail, snow, crossing or water conditions.", "observation_id": "observation-emigrant-crabtree-bear-conditions", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-alerts" }, { "artifact_refs": [], "content": "Favorite Hiking Trails, ROG 16-41, November 2018, page 2 Day Hikes (mileages one way): Bear Lake starts from Crabtree; Bear Lake continues past Camp Lake. Route names used here are descriptive, not asserted official trail names.", "observation_id": "observation-emigrant-crabtree-bear-profile", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-favorite-hikes" }, { "artifact_refs": [], "content": "Forest alert index requires current order/map review. Historical mapped connections and hiking descriptions do not establish present road, trail, snow, crossing or water conditions.", "observation_id": "observation-emigrant-crabtree-camp-conditions", "observed_at": null, "observer": "Wayproof primary-source text and visual map review", "retrieved_at": "2026-10-05T22:52:54+00:00", "source_id": "source-usfs-emigrant-alerts" }, { "artifact_refs": [], "content": "Favorite Hiking Trails, ROG 16-41, November 2018, page 2 Day Hikes (mileages one way): Camp Lake starts from Crabtree; Bear Lake continues past Camp Lake. 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Separate western routes now represent Lake Valley, Pine Valley and the eastward Gem continuation; their existence does not add those segments to the Camp/Bear routes. Shoreline circulation, individual campsites, current water and restroom availability remain unresolved. Historical maps are not current clearance.", "related_ids": [ "claim-emigrant-crabtree-camp-profile", "claim-emigrant-crabtree-bear-profile", "claim-emigrant-crabtree-camp-conditions", "claim-emigrant-crabtree-bear-conditions" ] } ], "relationships": [], "role": "Selected place" }, { "claims": [ { "claim": { "claim_id": "claim-emigrant-approach-recheck-crabtree", "evidence_ids": [ "evidence-emigrant-approach-recheck-crabtree" ], "predicate": "pretrip_current_conditions_recheck", "spatial_scope_ids": [ "scope-emigrant-crabtree" ], "subject_id": "trailhead-emigrant-crabtree", "temporal_scope": null, "value": { "required": true, "status": "unknown", "topics": [ "road and trail status", "fire restrictions", "parking and facility availability" ] } }, "evidence": [ { "claim_id": "claim-emigrant-approach-recheck-crabtree", "evidence_id": "evidence-emigrant-approach-recheck-crabtree", "notes": "", "observation_id": "observation-emigrant-approach-recheck-crabtree", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "The forest alert index contains dynamic road and fire orders. Current applicability to Crabtree Trailhead needs individual order and map review; its named access relationship is not an open-status observation.", "observation_id": "observation-emigrant-approach-recheck-crabtree", "observed_at": null, "observer": "Wayproof primary-source review", "retrieved_at": "2026-10-05T22:09:18+00:00", "source_id": "source-usfs-emigrant-alerts" } ], "sources": [ { "locator": "https://www.fs.usda.gov/r05/stanislaus/alerts", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-alerts" } ], "subject": { "entity_id": "trailhead-emigrant-crabtree", "kind": "trailhead", "name": "Crabtree Trailhead" } } ], "entity": { "entity_id": "trailhead-emigrant-crabtree", "kind": "trailhead", "name": "Crabtree Trailhead" }, "gaps": [ { "gap_id": "gap-emigrant-current-conditions", "question": "Are the selected approach and facilities usable on the trip date?", "reason": "Current road, trail, snow, crossing, water, fire and facility status is unknown. Individual alerts and mapped closures need route-specific matching; the Site Open banner is not route-level clearance.", "related_ids": [ "wilderness-emigrant", "claim-emigrant-conditions-recheck", "claim-emigrant-alerts-recheck", "claim-emigrant-access-recheck", "claim-emigrant-approach-recheck-bell-meadow", "claim-emigrant-approach-recheck-bourland-meadow", "claim-emigrant-approach-recheck-box-springs", "claim-emigrant-approach-recheck-crabtree", "claim-emigrant-approach-recheck-coyote-meadow", "claim-emigrant-approach-recheck-eagle-meadow", "claim-emigrant-approach-recheck-gianelli", "claim-emigrant-approach-recheck-kennedy-meadows", "claim-emigrant-approach-recheck-waterhouse", "claim-emigrant-approach-recheck-sonora-pass" ] } ], "relationships": [ { "evidence_ids": [ "evidence-emigrant-crabtree-camp-profile" ], "object_id": "trailhead-emigrant-crabtree", "predicate": "starts_at", "relationship_id": "relationship-emigrant-crabtree-camp-start", "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null } ], "role": "Entry" }, { "claims": [ { "claim": { "claim_id": "claim-emigrant-dogs", "evidence_ids": [ "evidence-emigrant-dogs" ], "predicate": "pet_policy", "spatial_scope_ids": [ "scope-emigrant-wilderness" ], "subject_id": "wilderness-emigrant", "temporal_scope": null, "value": { "county_leash_ordinance": "Tuolumne County; verify details", "direct_control_required": true } }, "evidence": [ { "claim_id": "claim-emigrant-dogs", "evidence_id": "evidence-emigrant-dogs", "notes": "", "observation_id": "observation-emigrant-dogs", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Pet Information: dogs must be under direct control and Tuolumne County has a leash ordinance.", "observation_id": "observation-emigrant-dogs", "observed_at": null, "observer": "Wayproof primary-source review", "retrieved_at": "2026-10-05T22:09:18+00:00", "source_id": "source-usfs-emigrant-access" } ], "sources": [ { "locator": "https://www.fs.usda.gov/r05/stanislaus/recreation/emigrant-wilderness-highway-108-access", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-access" } ], "subject": { "entity_id": "wilderness-emigrant", "kind": "wilderness", "name": "Emigrant Wilderness" } }, { "claim": { "claim_id": "claim-emigrant-access-recheck", "evidence_ids": [ "evidence-emigrant-access-recheck" ], "predicate": "pretrip_current_conditions_recheck", "spatial_scope_ids": [ "scope-emigrant-wilderness" ], "subject_id": "wilderness-emigrant", "temporal_scope": null, "value": { "required": true, "topics": [ "access roads", "parking", "trail conditions", "water and facilities", "issuing station operations" ] } }, "evidence": [ { "claim_id": "claim-emigrant-access-recheck", "evidence_id": "evidence-emigrant-access-recheck", "notes": "", "observation_id": "observation-emigrant-access-recheck", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Operational Hours directs visitors to check conditions and weather before travel; named access points do not establish that a road, parking space, water supply or facility will be available.", "observation_id": "observation-emigrant-access-recheck", "observed_at": null, "observer": "Wayproof primary-source review", "retrieved_at": "2026-10-05T22:09:18+00:00", "source_id": "source-usfs-emigrant-access" } ], "sources": [ { "locator": "https://www.fs.usda.gov/r05/stanislaus/recreation/emigrant-wilderness-highway-108-access", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-access" } ], "subject": { "entity_id": "wilderness-emigrant", "kind": "wilderness", "name": "Emigrant Wilderness" } }, { "claim": { "claim_id": "claim-emigrant-alerts-recheck", "evidence_ids": [ "evidence-emigrant-alerts-recheck" ], "predicate": "pretrip_current_conditions_recheck", "spatial_scope_ids": [ "scope-emigrant-wilderness" ], "subject_id": "wilderness-emigrant", "temporal_scope": null, "value": { "current_route_access": "unknown", "required": true, "topics": [ "road closures and seasonal access", "current fire orders", "occupancy rules" ] } }, "evidence": [ { "claim_id": "claim-emigrant-alerts-recheck", "evidence_id": "evidence-emigrant-alerts-recheck", "notes": "", "observation_id": "observation-emigrant-alerts-recheck", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Alerts index reviewed October 5, 2026 includes fire restrictions, occupancy limits and road closure orders, including a portion of 4N12 and Cherry access road 1N98. Exact applicability and current status require individual order/map review.", "observation_id": "observation-emigrant-alerts-recheck", "observed_at": null, "observer": "Wayproof primary-source review", "retrieved_at": "2026-10-05T22:09:18+00:00", "source_id": "source-usfs-emigrant-alerts" } ], "sources": [ { "locator": "https://www.fs.usda.gov/r05/stanislaus/alerts", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-alerts" } ], "subject": { "entity_id": "wilderness-emigrant", "kind": "wilderness", "name": "Emigrant Wilderness" } }, { "claim": { "claim_id": "claim-emigrant-conditions-recheck", "evidence_ids": [ "evidence-emigrant-conditions-recheck" ], "predicate": "pretrip_current_conditions_recheck", "spatial_scope_ids": [ "scope-emigrant-wilderness" ], "subject_id": "wilderness-emigrant", "temporal_scope": null, "value": { "required": true, "topics": [ "fire restrictions", "smoke", "snow", "weather and avalanche conditions" ] } }, "evidence": [ { "claim_id": "claim-emigrant-conditions-recheck", "evidence_id": "evidence-emigrant-conditions-recheck", "notes": "", "observation_id": "observation-emigrant-conditions-recheck", "stance": "supports" } ], "observations": [ { "artifact_refs": [], "content": "Current Conditions links to current fire restrictions, fire/smoke, avalanche forecasts and regional snow depth. These are pre-trip checking sources, not an observation of open roads or safe trails.", "observation_id": "observation-emigrant-conditions-recheck", "observed_at": null, "observer": "Wayproof primary-source review", "retrieved_at": "2026-10-05T22:09:18+00:00", "source_id": "source-usfs-emigrant-conditions" } ], "sources": [ { "locator": "https://www.fs.usda.gov/r05/stanislaus/conditions", "publisher": "USDA Forest Service, Stanislaus National Forest", "source_id": "source-usfs-emigrant-conditions" } ], "subject": { "entity_id": "wilderness-emigrant", "kind": "wilderness", "name": "Emigrant Wilderness" } } ], "entity": { "entity_id": "wilderness-emigrant", "kind": "wilderness", "name": "Emigrant Wilderness" }, "gaps": [ { "gap_id": "gap-emigrant-current-conditions", "question": "Are the selected approach and facilities usable on the trip date?", "reason": "Current road, trail, snow, crossing, water, fire and facility status is unknown. Individual alerts and mapped closures need route-specific matching; the Site Open banner is not route-level clearance.", "related_ids": [ "wilderness-emigrant", "claim-emigrant-conditions-recheck", "claim-emigrant-alerts-recheck", "claim-emigrant-access-recheck", "claim-emigrant-approach-recheck-bell-meadow", "claim-emigrant-approach-recheck-bourland-meadow", "claim-emigrant-approach-recheck-box-springs", "claim-emigrant-approach-recheck-crabtree", "claim-emigrant-approach-recheck-coyote-meadow", "claim-emigrant-approach-recheck-eagle-meadow", "claim-emigrant-approach-recheck-gianelli", "claim-emigrant-approach-recheck-kennedy-meadows", "claim-emigrant-approach-recheck-waterhouse", "claim-emigrant-approach-recheck-sonora-pass" ] }, { "gap_id": "gap-emigrant-route-topology", "question": "How do the selected trailheads connect to lakes, passes and each other?", "reason": "The eight western approaches from Crabtree, Gianelli, Bell Meadow and six northern approaches are joined by five bounded southern/eastern approaches: Box Springs–Chain Lakes, Bourland mapped terminus, Shingle Springs–Kibbie/Huckleberry and Leavitt Lake–PCT junction. Bourland continuation, Kennedy parking/branch geometry, southern display gaps, deeper lake/pass branches, returns and individual facility spurs remain unresolved; no wilderness-wide route completeness is claimed.", "related_ids": [ "wilderness-emigrant", "claim-emigrant-access-recheck" ] }, { "gap_id": "gap-emigrant-boundary-geometry", "question": "What boundary precision and exact jurisdiction remain unverified?", "reason": "Reviewed PAD-US designated-wilderness display geometry now matches Emigrant Wilderness, OBJECTID 237112. Survey/legal precision, current amendments and exact route-side jurisdiction remain unverified. Polygon overlap does not create access, containment or permission.", "related_ids": [ "wilderness-emigrant", "claim-emigrant-access-recheck" ] }, { "gap_id": "gap-emigrant-facility-inventory", "question": "What camps, toilets, water sources and parking are available along the approach?", "reason": "Coverage includes historical trailhead facilities, Baker/Deadman/Cherry Valley campground reports, 45 individually reviewed Cherry Valley listing pages and Kennedy cabin inventory. Conflicting water/toilet/fee reports, omitted Cherry Valley site 001, individual Baker/Deadman sites, current availability, remote camps and facility connectors remain unresolved. Inventory is not a reservation or operating guarantee.", "related_ids": [ "wilderness-emigrant", "claim-emigrant-access-recheck" ] } ], "relationships": [ { "evidence_ids": [ "evidence-emigrant-crabtree-camp-identity" ], "object_id": "wilderness-emigrant", "predicate": "traverses", "relationship_id": "relationship-emigrant-crabtree-camp-traverses", "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null } ], "role": "Traversed place" } ], "knowledge_gaps": [ { "gap_id": "gap-emigrant-crabtree-geometry-limitations", "question": "What does the Crabtree route display geometry establish?", "reason": "Camp western access remains a descriptive source-feature break, not a lake centroid or campsite. Reviewed Crabtree display geometry and Emigrant PAD-US boundary are published. Source accuracy, current trail alignment and conditions remain unknown; unsnapped Lake Valley mismatch, unreviewed branches, parking/facility connectors and navigation-grade survey remain unresolved.", "related_ids": [ "claim-emigrant-geometry-start-lake-valley", "claim-emigrant-geometry-lake-valley-pine-valley", "claim-emigrant-geometry-pine-valley-camp", "claim-emigrant-geometry-camp-bear-junction", "claim-emigrant-geometry-bear-spur", "route-emigrant-crabtree-camp-lake", "route-emigrant-crabtree-bear-lake" ] }, { "gap_id": "gap-emigrant-crabtree-camp-mileage", "question": "What one-way distance should be planned from Crabtree to Camp Lake?", "reason": "Official editions give different destination mileages. Preserve each report; neither supplies all atomic leg distances. No subtraction or schematic measurement supplies missing legs. Confirm the intended lake endpoint and current route with the Forest Service.", "related_ids": [ "route-emigrant-crabtree-camp-lake", "claim-emigrant-crabtree-camp-mileage-table", "claim-emigrant-crabtree-camp-favorite-hikes" ] }, { "gap_id": "gap-emigrant-crabtree-planning-limits", "question": "Does this graph establish a complete lake camping itinerary?", "reason": "Camp/Bear remain bounded Crabtree approaches requiring an exit itinerary. Separate western routes now represent Lake Valley, Pine Valley and the eastward Gem continuation; their existence does not add those segments to the Camp/Bear routes. Shoreline circulation, individual campsites, current water and restroom availability remain unresolved. Historical maps are not current clearance.", "related_ids": [ "claim-emigrant-crabtree-camp-profile", "claim-emigrant-crabtree-bear-profile", "claim-emigrant-crabtree-camp-conditions", "claim-emigrant-crabtree-bear-conditions" ] }, { "gap_id": "gap-emigrant-crabtree-junction-mileage", "question": "Which schematic endpoints match the detailed mapped junctions?", "reason": "The 2012 Pine Valley milepoint is 1.4; schematics print 1.3 to the south junction and omit the near-trailhead Lake Valley branch. The undated GIF prints another 1.3 toward Camp where the 2021 diagram leaves the link unlabeled. Endpoint alignment and edition differences remain unresolved; these labels are not assigned to atomic legs.", "related_ids": [ "claim-emigrant-crabtree-pine-valley-junction-milepoint", "claim-emigrant-crabtree-schematic-crabtree-junction", "claim-emigrant-crabtree-legacy-schematic" ] } ], "reference_evidence": [], "relationships": [ { "evidence_ids": [ "evidence-emigrant-crabtree-camp-profile" ], "object_id": "route-emigrant-crabtree-camp-lake", "predicate": "approached_via", "relationship_id": "relationship-emigrant-crabtree-camp-approach", "subject_id": "waterbody-emigrant-camp-lake", "temporal_scope": null }, { "evidence_ids": [ "evidence-emigrant-crabtree-camp-identity" ], "object_id": "route-node-emigrant-camp-west-approach", "predicate": "ends_at", "relationship_id": "relationship-emigrant-crabtree-camp-end", "subject_id": "route-emigrant-crabtree-camp-lake", "temporal_scope": null }, { "evidence_ids": [ "evidence-emigrant-crabtree-lake-valley-pine-valley" ], "object_id": "route-emigrant-crabtree-camp-lake", "predicate": "part_of", "relationship_id": "relationship-emigrant-crabtree-lake-valley-pine-valley-camp", "subject_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley", "temporal_scope": null }, { "evidence_ids": [ "evidence-emigrant-crabtree-pine-valley-camp", "evidence-emigrant-crabtree-camp-identity" ], "object_id": "route-emigrant-crabtree-camp-lake", "predicate": "part_of", "relationship_id": "relationship-emigrant-crabtree-pine-valley-camp-camp", "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp", "temporal_scope": null }, { "evidence_ids": [ "evidence-emigrant-crabtree-start-lake-valley" ], "object_id": "route-emigrant-crabtree-camp-lake", "predicate": "part_of", "relationship_id": "relationship-emigrant-crabtree-start-lake-valley-camp", "subject_id": "route-segment-emigrant-crabtree-start-lake-valley", "temporal_scope": null }, { "evidence_ids": [ "evidence-emigrant-crabtree-camp-profile" ], "object_id": 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