South Dakota Well Data › Hamlin County
Hamlin County, South Dakota: well depth, water level & drilling cost
✓ 502 SD DANR records · verified 2026-10-19
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How deep are wells in Hamlin County, South Dakota?
The median drilled well depth in Hamlin County is 53 ft, based on 501 wells with recorded depths in the state SD DANR database. Half of all wells fall between 35 ft and 92 ft; 90% are shallower than 190 ft. Wells drilled since 2016 have a median depth of 66 ft.
How much does it cost to drill a well in Hamlin County?
Applying published per-foot rates to the local median depth of 53 ft: drilling and casing alone typically runs $1,325–$3,445; a complete system including pump, pressure tank, and hookup typically runs $3,180–$5,300. Actual quotes depend on site access, geology, and casing requirements.
Drilled depth distribution
Who drills wells in Hamlin County?
Companies by number of wells completed in this county, per the completion reports South Dakota drillers file with DANR.
| Driller | Wells since 2016 |
|---|---|
| THEIN WELL COMPANY, INC. | 36 |
| KAISER WELL DRILLING | 18 |
| STEFFL DRILLING & PUMP, INC. | 15 |
| LACEY WELL DRILLING | 4 |
| SPARTZ & SONS WELL CO | 1 |
| GEOTEK ENGINEERING & TESTING | 1 |
| TRIPLE J. DRILLING COMPANY | 1 |
| STEFFL WELL DRILLERS, INC. | 1 |
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Well records by ZIP code in Hamlin County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Estelline (57234) — 192 wells, median 43 ft
- Castlewood (57223) — 172 wells, median 48 ft
- Lake Norden (57248) — 116 wells, median 60 ft
- Hayti (57241) — 50 wells, median 52 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.