Minnesota Well Data › Mahnomen County
Mahnomen County, Minnesota: well depth, water level & drilling cost
✓ 1,145 CWI records · verified 2026-06-29
How deep are wells in Mahnomen County, Minnesota?
The median drilled well depth in Mahnomen County is 107 ft, based on 1,144 wells with recorded depths in the state CWI database. Half of all wells fall between 76 ft and 156 ft; 90% are shallower than 218 ft. Wells drilled since 2016 have a median depth of 110 ft.
How much does it cost to drill a well in Mahnomen County?
Applying published per-foot rates to the local median depth of 110 ft: drilling and casing alone typically runs $2,750–$7,150; a complete system including pump, pressure tank, and hookup typically runs $6,600–$11,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Mahnomen County?
The median static water level is 20 ft below ground surface (middle half of wells: 11 ft–38 ft), from 506 measurements.
How much water do wells in Mahnomen County produce?
The median tested yield is 25 gpm (middle half: 13 gpm–40 gpm), from 1,088 pump tests. A typical household needs 5–10 gpm.
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Drilled depth distribution
Who drills wells in Mahnomen County?
Drillers by number of wells completed in this county since 2016, per filed well records (Minnesota County Well Index).
| Driller | Wells since 2016 |
|---|---|
| ANDERSON, K | 45 |
| WESA, D | 30 |
| MONROE, S | 21 |
| WESA, D. | 20 |
| ANDERSON, K. | 20 |
| MONROE, S. | 16 |
| ALSLEBEN, Z | 6 |
| SEE REMARKS | 5 |
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Median depth, water level, and yield for each ZIP code with recorded wells.
- Waubun (56589) — 418 wells, median 112 ft
- Mahnomen (56557) — 297 wells, median 101 ft
- Lengby (56651) — 185 wells, median 95 ft
- Naytahwaush (56566) — 89 wells, median 85 ft
- Bejou (56516) — 56 wells, median 112 ft
Method: medians computed from CWI records (water-supply wells only (domestic, irrigation, public/community supply, commercial, industrial) — monitoring, observation, test, injection, heat-pump and environmental boreholes 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.