Iowa Well Data › O'Brien County
O'Brien County, Iowa: well depth, owners & drilling cost
✓ 1,197 Iowa DNR records · verified 2026-10-19
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How deep are wells in O'Brien County, Iowa?
The median drilled well depth in O'Brien County is 34 ft, based on 1,090 wells with recorded depths in the state Iowa DNR database. Half of all wells fall between 24 ft and 80 ft; 90% are shallower than 480 ft. Wells drilled since 2016 have a median depth of 47 ft.
How much does it cost to drill a well in O'Brien County?
Applying published per-foot rates to the local median depth of 34 ft: drilling and casing alone typically runs $850–$2,210; a complete system including pump, pressure tank, and hookup typically runs $2,040–$3,400. Actual quotes depend on site access, geology, and casing requirements.
Drilled depth distribution
Who drills wells in O'Brien County?
Companies by number of wells completed in this county, per the well records Iowa drillers file with the DNR.
| Driller | Wells since 2016 |
|---|---|
| WERNIMONT,GARY - 6669 | 7 |
| MIDDENDORFF,CRAIG - 4021 | 5 |
| STEECE,LARRY - 5273 | 5 |
| VANDEBRAKE,LARRY - 5578 | 2 |
| STRAND,MICHAEL - 5350 | 2 |
| * Unknown, - | 1 |
| ALTON WELL | 1 |
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Well records by ZIP code in O'Brien County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Hartley (51346) — 341 wells, median 29 ft
- Sanborn (51248) — 151 wells, median 30 ft
- Primghar (51245) — 145 wells, median 32 ft
- Paullina (51046) — 143 wells, median 40 ft
- Sheldon (51201) — 114 wells, median 32 ft
- Sutherland (51058) — 101 wells, median 43 ft
- Archer (51231) — 82 wells, median 36 ft
- Calumet (51009) — 80 wells, median 39 ft
Method: medians computed from Iowa DNR records (Iowa DNR Well Information System records, water-supply wells only (monitoring, test, dewatering, injection and closed-loop geothermal wells 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.