{
  "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"
        }
      ]
    }
  ],
  "entities": [
    {
      "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/observations/observation-del-valle-seasonal-closures-2026.json",
      "reason": "Add the official EBRPD Del Valle campground corpus, preserving dated conflicts and live recheck boundaries.",
      "record_id": "observation-del-valle-seasonal-closures-2026",
      "record_type": "observation",
      "summary": "Ingest eight official EBRPD campground sources with current, dated, conflicting, and volatile evidence kept distinct."
    }
  ],
  "navigation": {
    "next_id": "observation-del-valle-tents-connectivity",
    "position": 43,
    "previous_id": "observation-del-valle-reservation-administration",
    "total": 1318
  },
  "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"
    }
  ],
  "record": {
    "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"
  },
  "record_type": "observation",
  "related_records": [],
  "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"
    }
  ]
}