{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-northern-waterhouse-topology",
        "evidence_ids": [
          "evidence-emigrant-northern-waterhouse-topology"
        ],
        "predicate": "mapped_route_connector",
        "spatial_scope_ids": [
          "scope-route-emigrant-waterhouse-waterhouse-lake"
        ],
        "subject_id": "route-segment-emigrant-northern-waterhouse",
        "temporal_scope": null,
        "value": {
          "distance_miles": null,
          "distance_status": "not_printed",
          "end_node_id": "route-node-emigrant-waterhouse-trail-end",
          "route_role": "official_mainline",
          "start_node_id": "trailhead-emigrant-waterhouse",
          "support": "19E31 from the mapped Waterhouse trailhead to its named lake trail terminus"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-northern-waterhouse-topology",
          "evidence_id": "evidence-emigrant-northern-waterhouse-topology",
          "notes": "",
          "observation_id": "observation-emigrant-northern-waterhouse-topology",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "19E31 from the mapped Waterhouse trailhead to its named lake trail terminus Atomic mileage remains unknown; cumulative reports and GIS lengths are not subtracted or measured.",
          "observation_id": "observation-emigrant-northern-waterhouse-topology",
          "observed_at": null,
          "observer": "Wayproof primary-source text, geospatial map and named-feature review",
          "retrieved_at": "2026-10-06T15:34:28+00:00",
          "source_id": "source-usfs-emigrant-overview-map"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Emigrant%20Wilderness%20GEOSPATIAL.pdf",
          "publisher": "USDA Forest Service, Stanislaus National Forest",
          "source_id": "source-usfs-emigrant-overview-map"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "route-segment-emigrant-northern-waterhouse",
      "kind": "route_segment",
      "name": "Waterhouse"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20261006-emigrant-northern-coverage",
      "evidence_refs": [
        "evidence-emigrant-northern-waterhouse-topology"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-emigrant-northern-waterhouse-topology.json",
      "reason": "Add bounded northern approaches, geometry and historical access evidence; preserve unresolved planning limits.",
      "record_id": "claim-emigrant-northern-waterhouse-topology",
      "record_type": "claim",
      "summary": "Add six northern Emigrant approaches, four with reviewed display geometry, plus distinct historical facilities and access conflicts."
    }
  ],
  "navigation": {
    "next_id": "claim-emigrant-northern-waterhouse-waterhouse-lake-conditions",
    "position": 794,
    "previous_id": "claim-emigrant-northern-waterhouse-road-order",
    "total": 3965
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "19E31 from the mapped Waterhouse trailhead to its named lake trail terminus Atomic mileage remains unknown; cumulative reports and GIS lengths are not subtracted or measured.",
      "observation_id": "observation-emigrant-northern-waterhouse-topology",
      "observed_at": null,
      "observer": "Wayproof primary-source text, geospatial map and named-feature review",
      "retrieved_at": "2026-10-06T15:34:28+00:00",
      "source_id": "source-usfs-emigrant-overview-map"
    }
  ],
  "record": {
    "claim_id": "claim-emigrant-northern-waterhouse-topology",
    "evidence_ids": [
      "evidence-emigrant-northern-waterhouse-topology"
    ],
    "predicate": "mapped_route_connector",
    "spatial_scope_ids": [
      "scope-route-emigrant-waterhouse-waterhouse-lake"
    ],
    "subject_id": "route-segment-emigrant-northern-waterhouse",
    "temporal_scope": null,
    "value": {
      "distance_miles": null,
      "distance_status": "not_printed",
      "end_node_id": "route-node-emigrant-waterhouse-trail-end",
      "route_role": "official_mainline",
      "start_node_id": "trailhead-emigrant-waterhouse",
      "support": "19E31 from the mapped Waterhouse trailhead to its named lake trail terminus"
    }
  },
  "record_type": "claim",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Emigrant%20Wilderness%20GEOSPATIAL.pdf",
      "publisher": "USDA Forest Service, Stanislaus National Forest",
      "source_id": "source-usfs-emigrant-overview-map"
    }
  ]
}