South Dakota Well Data › Grant County
Grant County, South Dakota: well depth, water level & drilling cost
✓ 657 SD DANR records · verified 2026-10-19
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How deep are wells in Grant County, South Dakota?
The median drilled well depth in Grant County is 80 ft, based on 657 wells with recorded depths in the state SD DANR database. Half of all wells fall between 47 ft and 147 ft; 90% are shallower than 212 ft. Wells drilled since 2016 have a median depth of 81 ft.
How much does it cost to drill a well in Grant County?
Applying published per-foot rates to the local median depth of 80 ft: drilling and casing alone typically runs $2,000–$5,200; a complete system including pump, pressure tank, and hookup typically runs $4,800–$8,000. Actual quotes depend on site access, geology, and casing requirements.
Drilled depth distribution
Who drills wells in Grant 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 Grant County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Ortley (57256) — 191 wells, median 120 ft
- Big Stone City (57216) — 163 wells, median 81 ft
- Milbank (57252) — 148 wells, median 56 ft
- Revillo (57259) — 68 wells, median 95 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.