Illinois 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 declaredIndiana DNR oil and gas wells + natural-gas pipelines plus DNR-managed lands (nature preserves, recreation sites, forestry tracts) via the gisdata.in.gov state Hub. - searchWells ⭐ ~78.3K wells with county/lease/permit/status — no operator on this layer - searchPipelines ⭐ ~215 interstate + intrastate gas pipelines with operator names - searchManagedLands ⭐ typed: nature-preserve | recreation-site | forestry-tract - getWellByIgsId, getServiceInfo §0 spec drift: brief listed portal.igs.indiana.edu as primary; rich registry actually lives on gisdata.in.gov state Hub. maps.indiana.edu root is HTML 404. operator_name on OilAndGasWells is ALWAYS NULL upstream. CRS varies (102100/4269/26916); outSR=4326.
5 methodsFreshness not declaredKentucky Geological Survey oil and gas well-records repository — every Appalachian and Illinois Basin KY well in one HTTP call. - searchWells (~144.9K) ⭐ filter county/operator/boreType/resultSymbol (D&A/OIL/GAS/CBM)/basinCode/formation/pool - searchWellsByOperator ⭐ + searchWellsByCounty ⭐ — convenience wrappers exploiting the 1M page cap - getWellByApi (api OR record_number lookup), getServiceInfo §0 verified: maxRecordCount=1,000,000 confirmed — all 144,902 wells returned in one query. Native CRS EPSG:6473 (KY Single Zone); outSR=4326 reprojects on the wire. KY is 99% vertical drilling (143K V vs 1.5K H). Top counties: Henderson 6.9K, Cumberland 6.6K, Daviess 6.3K, Pike 6.3K. Top result symbols: D&A 45.7K, OIL 39.2K, GAS 28.8K, LOC 20K.
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: illinois-basin