DATA SOURCES + PROVENANCE
GroundRove combines public and publicly distributed mapping and geoscience records into offline state packages. Source coverage changes over time, and a source being listed here does not mean every build contains every source.
BLM
GroundRove use: land-management and status context in the Colorado and Arizona state packages.
Important limit: surface-management mapping is not a parcel survey, title record, ownership determination, access determination, or surveyed legal boundary.
BLM MLRS
GroundRove use: mining-claim research and mapped claim geometry where available.
Important limit: “Not Closed” is the source-dataset classification. It is not a GroundRove determination that a claim is valid, enforceable, current, accurately surveyed, open to entry, or controlling at the displayed location. A blank map result is not proof that ground is unclaimed.
USGS SGMC
GroundRove use: queryable Colorado geology distributed as a fixed local snapshot derived from the U.S. Geological Survey State Geologic Map Compilation.
Important limit: geologic contacts and unit polygons are interpretive mapping, not surveyed parcel, access, hazard, ownership, or mining-claim boundaries.
USGS CNGM
GroundRove use: queryable Arizona geology derived from the U.S. Geological Survey Cooperative National Geologic Map, Earth’s surface geology, clipped and validated for the Arizona package.
Reference: DOI 10.5066/P146VGVM. Source mapping scales vary. Geologic polygons do not establish ownership, access, legal boundaries, hazards, or collectible material at a specific point.
USGS MRDS
GroundRove use: mineral-occurrence research. In Arizona, records whose source status is “Past Producer” are used for the Historic Mines & Workings display.
Important limit: these are research/reference records, not current mine-condition, ownership, access, safety, or legal-status determinations.
USGS / FORMER U.S. BUREAU OF MINES
GroundRove use: historic mineral-property and mine evidence incorporated into Colorado research layers where included.
Important limit: historic/static federal records may be approximate, incomplete, outdated, or generalized and should be read as research evidence rather than field verification.
COLORADO GEOLOGICAL SURVEY
GroundRove use: Colorado-specific research context, including datasets such as Historic Metal Mining Districts of Colorado, Radioactive Mineral Occurrences of Colorado and Bibliography, the U.S. Forest Service Abandoned Mine Land Inventory Project — Colorado, and the Inventory of Nonmetallic Mining and Processing Operations in Colorado where included by the package.
Important limit: mine and occurrence locations are research/reference records and do not establish current conditions, safe access, ownership, or collecting permission.
USGS GNIS
GroundRove use: place-name reference data in supported packages.
Important limit: a place location does not establish ownership, legal access, a surveyed entrance or trailhead, road condition, or collecting permission.
OPENSTREETMAP + PROTOMAPS
GroundRove use: roads, paths, waterways, places and other basemap context packaged for offline use.
Important limit: mapped roads or trails may be missing, stale, generalized, private, closed, undrivable, or unsafe. © OpenStreetMap contributors.
COLORADO DEPARTMENT OF TRANSPORTATION
GroundRove use: Colorado road context where included by the installed package.
Important limit: reference data does not establish current road conditions, legal access, closures, or safe passage.
GroundRove transforms portions of source data into offline map and search products. It does not independently verify the truth, completeness, age, legal status, field condition, coordinate precision, or positional accuracy of the underlying records. For legal status, permission, safety, current conditions, or precise boundaries, verify with the current responsible agency, landowner, official records, posted information, and direct field observation.
