{
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          "starts_on": "2026-09-21"
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        "value": {
          "cause": "maintenance",
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        }
      },
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
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          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-anthony-chabot-big-bear-loop-closure-2026",
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          "cause": "FEMA-funded projects",
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        }
      },
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          "notes": "Live EBRPD alert; recheck the official alerts page before travel.",
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-briones-crest-intersections-damaged-2026",
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          "starts_on": null
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            "Briones Crest Trail / Mott Peak Trail intersection",
            "Briones Crest Trail / Lagoon Trail intersection"
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          "status": "damaged_but_passable_with_care"
        }
      },
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        }
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        {
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          "observed_at": null,
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          "locator": "https://www.ebparks.org/alerts-closures",
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    },
    {
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        "claim_id": "claim-briones-to-las-trampas-downtown-lafayette-closure-2026",
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          "starts_on": null
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          "segment": "Golden Gate Way to Moraga Boulevard in downtown Lafayette",
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          "notes": "Live EBRPD alert; recheck the official alerts page before travel.",
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        }
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      "observations": [
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    },
    {
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        "claim_id": "claim-deer-valley-no-public-access",
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          "evidence-deer-valley-no-public-access"
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          "starts_on": null
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          "status": "not_open_to_public"
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        }
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      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
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          "observed_at": null,
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      ],
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        {
          "locator": "https://www.ebparks.org/alerts-closures",
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    {
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          "evidence-delta-de-anza-railroad-desrys-closure-2026"
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          "ends_on": "2026-09-25",
          "starts_on": "2026-09-14"
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          "cause": "pavement work",
          "segment": "Railroad Avenue to Desrys Boulevard",
          "status": "closed"
        }
      },
      "evidence": [
        {
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          "notes": "Live EBRPD alert; recheck the official alerts page before travel.",
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        }
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      "observations": [
        {
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            "Alerts and Closures table"
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          "observed_at": null,
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      ],
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          "locator": "https://www.ebparks.org/alerts-closures",
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          "source_id": "source-ebrpd-alerts-closures"
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-dry-creek-garden-storm-closure",
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          "evidence-dry-creek-garden-storm-closure"
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          "starts_on": null
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          "facility": "Dry Creek Garden",
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          "until": "further notice"
        }
      },
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        {
          "claim_id": "claim-dry-creek-garden-storm-closure",
          "evidence_id": "evidence-dry-creek-garden-storm-closure",
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          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
          ],
          "content": "The district alerts page published the park, trail, facility, and water conditions represented by the associated claims. Entries with insufficient page context were not promoted.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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        {
          "locator": "https://www.ebparks.org/alerts-closures",
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          "source_id": "source-ebrpd-alerts-closures"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-eckley-pier-water-unavailable-20260922",
        "evidence_ids": [
          "evidence-eckley-pier-water-unavailable-20260922"
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        "predicate": "water_availability",
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        "subject_id": "park-carquinez-strait-regional-shoreline",
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          "ends_on": null,
          "starts_on": null
        },
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          "facility": "Eckley Pier",
          "restoration_estimate": null,
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          "status": "unavailable"
        }
      },
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        {
          "claim_id": "claim-eckley-pier-water-unavailable-20260922",
          "evidence_id": "evidence-eckley-pier-water-unavailable-20260922",
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          "observation_id": "observation-ebrpd-alerts-closures-20260922",
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
          ],
          "content": "The district alerts page published the park, trail, facility, and water conditions represented by the associated claims. Entries with insufficient page context were not promoted.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T18:30:00+00:00",
          "source_id": "source-ebrpd-alerts-closures"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/alerts-closures",
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-iron-horse-walnut-creek-closure-2026",
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          "evidence-iron-horse-walnut-creek-closure-2026"
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          "starts_on": "2026-10-05"
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        "value": {
          "cause": "vegetation management and wildlife enhancement work",
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          "status": "closed"
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      },
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          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
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          "content": "The district alerts page published the park, trail, facility, and water conditions represented by the associated claims. Entries with insufficient page context were not promoted.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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      ],
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        {
          "locator": "https://www.ebparks.org/alerts-closures",
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-leona-canyon-leona-trail-closure-2026",
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          "evidence-leona-canyon-leona-trail-closure-2026"
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          "starts_on": null
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          "cause": "culvert repair",
          "heavy_equipment": true,
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        }
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          "notes": "Live EBRPD alert; recheck the official alerts page before travel.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
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          "content": "The district alerts page published the park, trail, facility, and water conditions represented by the associated claims. Entries with insufficient page context were not promoted.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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      ]
    },
    {
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          "cause": "pavement work",
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          "weekends": "scheduled open"
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      },
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        {
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          "notes": "Live EBRPD alert; recheck the official alerts page before travel.",
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
          ],
          "content": "The district alerts page published the park, trail, facility, and water conditions represented by the associated claims. Entries with insufficient page context were not promoted.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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      ],
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        {
          "locator": "https://www.ebparks.org/alerts-closures",
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-mlk-shoreline-doolittle-pier-right-dock-closure-2026",
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          "cause": "pilings need replacement",
          "facility": "right dock, south side of Doolittle fishing pier",
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        }
      },
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          "notes": "Live EBRPD alert; recheck the official alerts page before travel.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
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          "content": "The district alerts page published the park, trail, facility, and water conditions represented by the associated claims. Entries with insufficient page context were not promoted.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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          "locator": "https://www.ebparks.org/alerts-closures",
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-point-pinole-bay-trail-sinkhole-closure-2026",
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          "cause": "large sinkhole",
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        }
      },
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        {
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          "notes": "Live EBRPD alert; recheck the official alerts page before travel.",
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
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          "content": "The district alerts page published the park, trail, facility, and water conditions represented by the associated claims. Entries with insufficient page context were not promoted.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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      "sources": [
        {
          "locator": "https://www.ebparks.org/alerts-closures",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-alerts-closures"
        }
      ]
    },
    {
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        "claim_id": "claim-round-valley-backpack-camp-no-water-20260922",
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          "evidence-round-valley-backpack-camp-no-water-20260922"
        ],
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          "starts_on": null
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          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "stance": "supports"
        }
      ],
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        {
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            "Alerts and Closures table"
          ],
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          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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        }
      ],
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        {
          "locator": "https://www.ebparks.org/alerts-closures",
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          "source_id": "source-ebrpd-alerts-closures"
        }
      ]
    },
    {
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        },
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        }
      ],
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      ]
    },
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        }
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            "Alerts and Closures table"
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        }
      ],
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        {
          "locator": "https://www.ebparks.org/alerts-closures",
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      ]
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        }
      ],
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        {
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            "Alerts and Closures table"
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          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
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      ],
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        {
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      ]
    },
    {
      "claim": {
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          "evidence-wildcat-creek-giaramita-rumrill-closure-2026"
        ],
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          "starts_on": null
        },
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      ],
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        {
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            "Alerts and Closures table"
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          "observed_at": null,
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        }
      ],
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          "locator": "https://www.ebparks.org/alerts-closures",
          "publisher": "East Bay Regional Park District",
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      ]
    }
  ],
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    },
    {
      "entity_id": "route-wildcat-creek-regional-trail",
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  ],
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    {
      "action": "ADD",
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      "knowledge_gap_refs": [],
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    }
  ],
  "navigation": {
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    "previous_id": "observation-del-valle-volatile-alerts",
    "total": 1318
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      "artifact_refs": [
        "Alerts and Closures table"
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  ],
  "record": {
    "artifact_refs": [
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    ],
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    "observed_at": null,
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    {
      "locator": "https://www.ebparks.org/alerts-closures",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-alerts-closures"
    }
  ]
}