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 — term-end dates exist only on a few mineral/commercial leases (none on O&G/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); on the O&G layer EVERY lease carries that sentinel, so O&G expirations are not published.

New Mexico Environment Department permits and remediation via public ArcGIS FeatureServers. Groundwater discharge covers Permian produced-water and UIC permits. Air-quality facilities span seven classes: major, minor, synthetic-minor, no-permit, exempt, intent, and inactive. Hazardous-waste facilities cover 21 RCRA-permitted sites; voluntary remediation covers VRP cleanups. Groundwater and VRP status values are provider-authored and inconsistent, so status matching is case-insensitive. Non-major air layers can contain millions of emission units; supply county, bbox, or another narrowing filter.