Louisiana DEQ water-quality datasets. AGOL Feature Services, no auth. - search303dImpairedWaters ⭐ — IR2020 subsegments where a designated use is Not Supported (303(d)) - searchSubsegmentsByUse ⭐ — same layer, any use-rating - searchWatershedBasins (12), searchAmbientMonitoringSites (~761 LEAU active), searchFishAdvisories (62) - getServiceInfo quirks: subsegments + flowlines have NO parish — use BASIN (12 names: ATCHAFALAYA / CALCASIEU / ...) or bbox. Use codes: PCR/SCR/FWP/DWS/ONR/OYS/AGR/LAL. Status: Fully Supported / Not Supported / Insufficient Data / Not a Use / No Data Collected. Fish Advisories' Parishes is free-text ("Calcasieu and Cameron"); LIKE-matched. Air emissions + hazardous waste are NOT published as LDEQ Feature Services.
6 methodsFreshness not declaredNorth Dakota DEQ environmental data. ND DEQ AGOL + FracTracker mirror; no auth. - searchSpills (~5.4K) ⭐ Bakken-era oil + brine spills (FracTracker mirror, 2014) - searchStormwaterPermits (~2.9K) ⭐ Bakken well-pad construction permits by operator - searchGroundwaterMonitoring (~278), searchImpairedStreams (~34.8K Cat 5 = 303d), getServiceInfo upstream quirks: ND DEQ does NOT publish spills/USTs/air permits/abandoned pits as Feature Services — methods reframed against actual surface + FracTracker spills. Stormwater has NO COUNTY column — filter silently dropped, use bbox/near. Brine + crude oil spill upstream is the same dataset (deduped by Incident_ID when spillType:'all').
5 methodsFreshness not declaredPennsylvania DEP environmental — water, mining, hazardous waste, air. Same agency as pa-dep-oilgas, separate layers. - search303dImpairedStreams (~95K) ⭐ 303(d)-equivalent (impaired only). Filter use/cause/HUC - searchActMine ⭐ Anthracite + Bituminous + Industrial Mineral surface mine permits (~42K) - searchHazardousWasteSites (~16.9K Land Recycling Soil Media), searchAirEmissionSources (~61.3K), getServiceInfo upstream quirks: 303(d) layer 158 contains ONLY impaired streams (BLN_ATTAINED=N). Mining + Hazardous + Air layers have NO COUNTY column — silently dropped, use bbox/near or company/facility name. PERMIT_TYP freeform with 90+ values + typos. SITE_STATUS: ACTIVE / INACTIVE / ABANDONED / RECLAMATION COMPLETED / 'Unavaialble' [sic typo]. Air layer has only one PRIMARY_FACILITY_TYPE.
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: 303d