Alaska Division of Geological & Geophysical Surveys — state geological survey. Mineral occurrences, geologic-map publication index, mining districts, volcanoes, radon observations. - searchMineralOccurrences ⭐ ~335 — DDS-18 MIL1, filter commodity / group / deposit type / status - searchGeologicMaps ⭐ ~4.16K USGS+DGGS publication index, filter agency / scale / keyword - searchMineralDistricts ⭐ 75 polygons across 14 regions - searchVolcanoes (~53 AVO inventory), getServiceInfo §0 spec drift: geology/statemap_projects + geophysics/Geophysical_Surveys services 500 ("No Layer or Table"). DROPPED. Volcanoes service rejects outFields=* with gateway error — handler enumerates explicit fields. Native CRS varies; outSR=4326 on every call.
5 methodsFreshness not declaredIllinois State Geological Survey (ISGS) ILOIL well registry plus oil/gas/storage field polygons and waterflood-area boundaries via maps.isgs.illinois.edu. - searchWells ⭐ ~207K wells with API, status code+text, operator, formation, depth - searchOilGasFields ⭐ ~1K canonical 2024 unified oil + gas + gas-storage polygons (or ~550 legacy) - getWellByApi single well lookup, searchWaterfloodAreas, getServiceInfo §0 spec drift: brief listed Oil_Gas_GasStor_Fields_2023 — that service is 404. Canonical service is _2024. Wells layer is at index 8 of Wells/MapServer (NOT 0). STATUS column has 100+ codes; STATUS_TEXT has 100+ descriptive variants. Legacy service uses upper-snake fields, 2024 uses camelCase. Native CRS 102100; outSR=4326.
5 methodsFreshness not declaredKansas Geological Survey (KGS) — oil and gas wells (~515K), field polygons (~8K), and Class II UIC injection wells (~49K). - searchWells ⭐ 515,517 wells with operator, county Title Case, status, wellType, formation - searchOilGasFields ⭐ 8,089 field polygons (Active/Abandoned, Oil/Gas/Oil and Gas) - searchClassIIWells ⭐ 49,381 UIC Class II injection wells (EOR/SWD) - getWellByApi, getServiceInfo §0 spec drift: Hub kgs-gis-data-and-maps-ku is discovered via DCAT feed; underlying FS on services2.arcgis.com tenant ZOdjAzAQ2B0f85zi. STATUS column has 100+ codes (incl P&A suffix variants); WELL_TYPE separate. API_NUMBER dashed; API_NUM_NODASH 14-digit. CRS 102100; outSR=4326.
5 methodsFreshness not declared
Knowledge
Know your data sources.
The public data contract for every source PatchOps exposes over MCP: provenance, freshness, coverage, caveats, and per-method schemas. Also available as JSON at /api/knowledge/data-sources.
tag: state-geological-survey