South Dakota Well Data › Douglas County
Douglas County, South Dakota: well depth, water level & drilling cost
✓ 204 SD DANR records · verified 2026-10-19
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How deep are wells in Douglas County, South Dakota?
The median drilled well depth in Douglas County is 366 ft, based on 204 wells with recorded depths in the state SD DANR database. Half of all wells fall between 229 ft and 405 ft; 90% are shallower than 466 ft. Wells drilled since 2016 have a median depth of 320 ft.
How much does it cost to drill a well in Douglas County?
Applying published per-foot rates to the local median depth of 366 ft: drilling and casing alone typically runs $9,150–$23,790; a complete system including pump, pressure tank, and hookup typically runs $21,960–$36,600. Actual quotes depend on site access, geology, and casing requirements.
Drilled depth distribution
Who drills wells in Douglas County?
Companies by number of wells completed in this county, per the completion reports South Dakota drillers file with DANR.
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Well records by ZIP code in Douglas County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Corsica (57328) — 99 wells, median 380 ft
- Delmont (57330) — 76 wells, median 203 ft
- Armour (57313) — 52 wells, median 340 ft
Method: medians computed from SD DANR records (SD DANR NR68 well completion reports, water wells only (monitoring, test-hole, geothermal-loop and dewatering records excluded); depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.