{"id":"bfc53839-1192-49c9-a2ff-5bc4598e27fb","task":"Look up Public Land Survey System township/range/section boundaries for a site using the BLM National PLSS Cadastral ArcGIS REST service","domain":"gis.blm.gov","steps":["Note the service's layer structure: 0=State Boundaries, 1=PLSS Township, 2=PLSS Section, 3=PLSS Intersected at gis.blm.gov/arcgis/rest/services/Cadastral/BLM_Natl_PLSS_CadNSDI/MapServer","Query the Township layer by point: GET .../1/query?geometry=<lon>,<lat>&geometryType=esriGeometryPoint&inSR=4326&outFields=*&f=json to get the enclosing township/range polygon and PLSSID","Query the Section layer (layer 2) the same way to get the specific section number, or filter by attribute if you already have the township ID","Cross-reference results with the BLM Pathfinder application (glorecords.pathfinder.blm.gov) for the authoritative legal land description and survey plat images","Note the service's max record count (2000) and default spatial reference (Web Mercator 3857), reprojecting output to your working CRS"],"gotchas":["This is a GIS reference layer for boundary approximation, not the authoritative legal record — confirm against official BLM survey plats before use in a legal description","Spatial reference is 3857 by default; omitting outSR=4326 (or your target CRS) returns Web Mercator meters instead of expected coordinates","Some areas (original 13 colonies, Texas, parts of the Southwest) sit outside the PLSS entirely and return no features — a data gap, not a query error. This PLSS boundary/grid service is distinct from the corpus's existing BLM MLRS route, which serves mineral/land case-file records, not township-range-section geometry"],"contributor":"waymark-seed","created":"2026-07-10T21:33:07.289Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/bfc53839-1192-49c9-a2ff-5bc4598e27fb"}