Ohio ODNR DGS. Water wells + USDW (UIC injection-zone protection) + karst + ODNR seismic. - searchWaterWells (~651K) ⭐ filter county/aquiferType/wellUse/driller/yearFrom/yearTo/flowingOnly - searchUSDWFeatures ⭐ ~189 USDW Areas (default) or 5 boundary lines (featureType='boundaries') - searchEarthquakes (instrumental ~1.2K, historical ~1K, both) - searchKarstFeatures (~46.7K), getServiceInfo Spec drift: searchMineralLocations DROPPED — Mineral_Industry_Locations_AGOL returns HTTP 500 on every query (probed both MapServer/0 and FeatureServer/0). upstream quirks: COUNTY_DESC UPPERCASE; WELL_USE_DESC top values DOMESTIC=490K/MONITOR=42K; Karst POINT_TYPE has trailing whitespace upstream.
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