{
  "id": "bnd-lahore-drainage-map-context-2026",
  "recordType": "boundaryVersion",
  "placeId": "plc-pk-punjab-lahore-district",
  "name": "Lahore mapped drainage and waterway context",
  "boundaryKind": "other",
  "administrativePurpose": "Resident-facing orientation to mapped drains, stormwater channels and other waterways near a selected Lahore road",
  "boundaryStatus": "reconstructed",
  "observedDate": "2026-08-04",
  "geometry": {
    "status": "reconstructed",
    "basis": "derived-source-vector",
    "path": "source-data/geography/lahore-drainage-map-context-2026-08-04.geojson",
    "format": "GeoJSON",
    "geometryType": "Mixed",
    "coordinateReferenceSystem": "EPSG:4326",
    "featureCount": 256,
    "fileHash": "sha256:c6b7c915f4d498df3e4d564e82f8fa85d60da6a0fe4983420ae0396b66463dd5",
    "conversionMethod": "Canal, drain, ditch and stream lines in the 3 August 2026 Geofabrik Pakistan OpenStreetMap extract were retained when at least one vertex fell inside the official PULSE Lahore district polygon. Exact normalized names join Satto Katla Drain and Cantonment Drain to their separate official asset identities.",
    "uncertaintyNotes": "OpenStreetMap is community maintained. Unnamed lines and spelling variants are preserved. A line does not prove ownership, a current operating office, catchment, flow direction, capacity, condition or desilting status."
  },
  "geographicClaim": {
    "assignmentLevel": "context-only",
    "proves": "The displayed line and name were present in the pinned community-map extract. Exact normalized names connect two lines to separately verified official drain identities.",
    "doesNotProve": "It does not assign a selected road to that line or prove the public authority, inlet, catchment, pumping route, outfall, capacity, condition or current desilting status.",
    "publicDisplay": "context-only"
  },
  "serviceFunctionId": "fun-lahore-stormwater-drainage",
  "evidenceState": "reconstructed",
  "evidenceGap": "Current official drain, inlet, pumping-station, ponding-point, catchment, work-order and desilting GIS with segment-level public-authority assignments.",
  "citations": [
    "cit-openstreetmap-lahore-drainage-context-2026",
    "cit-aiib-lahore-esia-major-drains",
    "cit-wasa-lahore-current-inventory"
  ],
  "lastCheckedDate": "2026-08-04",
  "reviewState": "reviewed",
  "notes": "The product may call a feature nearby mapped drainage context. It must not call proximity an assignment, catchment or responsibility finding."
}