{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-northern-waterhouse-directions",
        "evidence_ids": [
          "evidence-emigrant-northern-waterhouse-directions"
        ],
        "predicate": "historical_driving_directions",
        "spatial_scope_ids": [
          "scope-emigrant-waterhouse"
        ],
        "subject_id": "trailhead-emigrant-waterhouse",
        "temporal_scope": null,
        "value": {
          "current_road_status": "unknown; verify MVUM and current orders",
          "legs": [
            {
              "approximate_miles": 3,
              "instruction": "east Highway 108 from Summit Ranger Station"
            },
            {
              "approximate_miles": 5,
              "instruction": "right Herring Creek Road 4N12 to pavement end"
            },
            {
              "approximate_miles": 2,
              "instruction": "continue to Hammil Canyon Loop"
            },
            {
              "approximate_miles": 2,
              "instruction": "right"
            },
            {
              "approximate_miles": {
                "maximum": 0.75,
                "minimum": 0.5
              },
              "instruction": "right road labeled 4N31 in this guide toward Pinecrest Peak"
            }
          ],
          "mileage_precision": "approximate",
          "origin": "Summit Ranger Station (Pinecrest)",
          "source_edition": "2012-04"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-northern-waterhouse-directions",
          "evidence_id": "evidence-emigrant-northern-waterhouse-directions",
          "notes": "",
          "observation_id": "observation-emigrant-northern-waterhouse-directions",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "ROG 16-26 April 2012 directions from Summit Ranger Station: east Highway 108 from Summit Ranger Station: 3 miles; right Herring Creek Road 4N12 to pavement end: 5 miles; continue to Hammil Canyon Loop: 2 miles; right: 2 miles; right road labeled 4N31 in this guide toward Pinecrest Peak: {'minimum': 0.5, 'maximum': 0.75} miles. The guide expressly qualifies all mileages as approximate.",
          "observation_id": "observation-emigrant-northern-waterhouse-directions",
          "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-trailheads"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/publication/emigrant-wilderness-trailheads.pdf",
          "publisher": "USDA Forest Service, Stanislaus National Forest",
          "source_id": "source-usfs-emigrant-trailheads"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-emigrant-northern-waterhouse-map-road",
        "evidence_ids": [
          "evidence-emigrant-northern-waterhouse-map-road"
        ],
        "predicate": "mapped_approach_road_label",
        "spatial_scope_ids": [
          "scope-emigrant-waterhouse"
        ],
        "subject_id": "trailhead-emigrant-waterhouse",
        "temporal_scope": null,
        "value": {
          "current_designation": "unverified",
          "road_label": "5N31",
          "source_edition": "2010"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-northern-waterhouse-map-road",
          "evidence_id": "evidence-emigrant-northern-waterhouse-map-road",
          "notes": "",
          "observation_id": "observation-emigrant-northern-waterhouse-map-road",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "2010 geospatial overview Waterhouse panel labels the Pinecrest Peak approach road 5N31, while the 2012 trailhead directions print 4N31.",
          "observation_id": "observation-emigrant-northern-waterhouse-map-road",
          "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": "trailhead-emigrant-waterhouse",
      "kind": "trailhead",
      "name": "Waterhouse Trailhead"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20261006-emigrant-northern-coverage",
      "evidence_refs": [],
      "knowledge_gap_refs": [
        "gap-emigrant-northern-waterhouse-road-number"
      ],
      "path": "canonical/v0/gaps/gap-emigrant-northern-waterhouse-road-number.json",
      "reason": "Add bounded northern approaches, geometry and historical access evidence; preserve unresolved planning limits.",
      "record_id": "gap-emigrant-northern-waterhouse-road-number",
      "record_type": "gap",
      "summary": "Add six northern Emigrant approaches, four with reviewed display geometry, plus distinct historical facilities and access conflicts."
    }
  ],
  "navigation": {
    "next_id": "gap-emigrant-northern-waterhouse-waterhouse-lake-planning",
    "position": 196,
    "previous_id": "gap-emigrant-northern-waterhouse-order-id",
    "total": 299
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "ROG 16-26 April 2012 directions from Summit Ranger Station: east Highway 108 from Summit Ranger Station: 3 miles; right Herring Creek Road 4N12 to pavement end: 5 miles; continue to Hammil Canyon Loop: 2 miles; right: 2 miles; right road labeled 4N31 in this guide toward Pinecrest Peak: {'minimum': 0.5, 'maximum': 0.75} miles. The guide expressly qualifies all mileages as approximate.",
      "observation_id": "observation-emigrant-northern-waterhouse-directions",
      "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-trailheads"
    },
    {
      "artifact_refs": [],
      "content": "2010 geospatial overview Waterhouse panel labels the Pinecrest Peak approach road 5N31, while the 2012 trailhead directions print 4N31.",
      "observation_id": "observation-emigrant-northern-waterhouse-map-road",
      "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": {
    "gap_id": "gap-emigrant-northern-waterhouse-road-number",
    "question": "Which road designation applies to the Waterhouse approach?",
    "reason": "The 2012 guide prints 4N31; the 2010 overview map labels 5N31 by Pinecrest Peak and Waterhouse. Preserve both; confirm on the current MVUM and road orders before driving.",
    "related_ids": [
      "claim-emigrant-northern-waterhouse-directions",
      "claim-emigrant-northern-waterhouse-map-road"
    ]
  },
  "record_type": "gap",
  "related_records": [
    {
      "record": {
        "claim_id": "claim-emigrant-northern-waterhouse-directions",
        "evidence_ids": [
          "evidence-emigrant-northern-waterhouse-directions"
        ],
        "predicate": "historical_driving_directions",
        "spatial_scope_ids": [
          "scope-emigrant-waterhouse"
        ],
        "subject_id": "trailhead-emigrant-waterhouse",
        "temporal_scope": null,
        "value": {
          "current_road_status": "unknown; verify MVUM and current orders",
          "legs": [
            {
              "approximate_miles": 3,
              "instruction": "east Highway 108 from Summit Ranger Station"
            },
            {
              "approximate_miles": 5,
              "instruction": "right Herring Creek Road 4N12 to pavement end"
            },
            {
              "approximate_miles": 2,
              "instruction": "continue to Hammil Canyon Loop"
            },
            {
              "approximate_miles": 2,
              "instruction": "right"
            },
            {
              "approximate_miles": {
                "maximum": 0.75,
                "minimum": 0.5
              },
              "instruction": "right road labeled 4N31 in this guide toward Pinecrest Peak"
            }
          ],
          "mileage_precision": "approximate",
          "origin": "Summit Ranger Station (Pinecrest)",
          "source_edition": "2012-04"
        }
      },
      "record_id": "claim-emigrant-northern-waterhouse-directions",
      "record_type": "claim"
    },
    {
      "record": {
        "claim_id": "claim-emigrant-northern-waterhouse-map-road",
        "evidence_ids": [
          "evidence-emigrant-northern-waterhouse-map-road"
        ],
        "predicate": "mapped_approach_road_label",
        "spatial_scope_ids": [
          "scope-emigrant-waterhouse"
        ],
        "subject_id": "trailhead-emigrant-waterhouse",
        "temporal_scope": null,
        "value": {
          "current_designation": "unverified",
          "road_label": "5N31",
          "source_edition": "2010"
        }
      },
      "record_id": "claim-emigrant-northern-waterhouse-map-road",
      "record_type": "claim"
    }
  ],
  "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"
    },
    {
      "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/publication/emigrant-wilderness-trailheads.pdf",
      "publisher": "USDA Forest Service, Stanislaus National Forest",
      "source_id": "source-usfs-emigrant-trailheads"
    }
  ]
}