Montana Water Well Records — County-Level Statistics (2026)

County-level summary statistics for documented water wells in Montana, computed from the official GWIC well database: median drilled depth, static water level, tested yield, and modeled drilling cost for each county. Compiled and maintained by Montana Well Data (montanawelldata.com). Full methodology and free per-address lookups: montanawelldata.com. Aggregate statistics only; individual well records are not included.