Know your data sources.

New Mexico Office of the State Engineer water-rights + groundwater data. AGOL Feature Services (owner: osegis), no auth. - searchWaterRights ⭐ — ~277,608 PODs filtered by county/owner/use/status/basin - getDeclaredGroundwaterBasin ⭐ — point-in-polygon basin lookup (39 polys, 161 with sub-basins) - searchPointsOfDiversion (alias), searchIrrigationDistricts (74 polys) - getServiceInfo quirks: county is 2-letter code (LE=Lea, ED=Eddy) — handler accepts both code + full name. POD geometry stored as UTM Zone 13N — outSR=4326 forces WGS84. use_ has 59 codes (OIL/OFM/SRO/MIN/INJ for O&G); status has 20 (PMT/LIC/EXP/CAN); pod_status separate (ACT/INC/PEN/PLG). 2 basin layers found — default 39-poly canonical, opt-in 161-poly with sub-basins.

New Mexico State Land Office state-trust mineral leases. Permian parallel to TX GLO. No auth. - searchOilGasLeases (~5.9K) ⭐ active O&G leases — Permian Basin - getExpiringLeases ⭐ acquisition-signal feed across O&G/mineral/commercial/ag - searchMineralLeases (~746) — Salt Water Disposal, Caliche, Potash, Coal - searchAgriculturalLeases (~3.8K), getLeaseDetail, getServiceInfo upstream quirks: NMSLO publishes only ACTIVE leases (single STATUS value). NO COUNTY column on any layer — use bbox/near. Held-by-production leases have term-end at year-9999 epoch (surfaced as null daysUntilExpiry).

NM Environment Department permits + remediation. Native ArcGIS REST FeatureServers, no auth. - searchGroundwaterDischargePermits ⭐ — Permian produced-water + UIC permits (~1.1K) - searchAirQualityPermits ⭐ — 7-class layer: major (default, ~37K) / minor / synthetic-minor / ... - searchHazardousWasteFacilities (21 RCRA-permitted sites, no county) - searchVoluntaryRemediation — VRP brownfield-style cleanups (~163) - getServiceInfo quirks: GWDP STATUS has 13 distinct values (Active / Pending / Ceased / Terminated / Withdrawn / Denied / ...). VRP STATUS dirty (Termin / ActIve / Closed / closed / Condit / Applic / CCOC) — case-insensitive. Air Facilities split across 7 FACILITY_CLASS layers; non-major returns millions of emission units, always pass county/bbox.