California Well Data › Mono County
Mono County, California: well depth, water level & drilling cost
✓ 1,512 DWR records · verified 2026-10-02
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How deep are wells in Mono County, California?
The median drilled well depth in Mono County is 200 ft, based on 1,391 wells with recorded depths in the state DWR database. Half of all wells fall between 120 ft and 310 ft; 90% are shallower than 460 ft. Wells drilled since 2016 have a median depth of 231 ft.
How much does it cost to drill a well in Mono County?
Applying published per-foot rates to the local median depth of 200 ft: drilling and casing alone typically runs $5,000–$13,000; a complete system including pump, pressure tank, and hookup typically runs $12,000–$20,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Mono County?
The median static water level is 65 ft below ground surface (middle half of wells: 38 ft–135 ft), from 690 measurements.
How much water do wells in Mono County produce?
The median tested yield is 50 gpm (middle half: 25 gpm–100 gpm), from 764 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Mono County?
Companies by number of wells completed in this county since 2016, per filed well completion reports (California Department of Water Resources).
| Driller | Wells since 2016 |
|---|---|
| BRUCE MACKAY PUMP & WELL SERVICE INC | 48 |
| MARANATHA DRILLING AND PUMP SERVICE | 11 |
| J & H DRILLING CO INC | 8 |
| PARSONS DRILLING INC | 7 |
| WELSCO CORP | 5 |
| BC2 ENVIRONMENTAL LLC | 3 |
| LAYNE CHRISTENSEN COMPANY | 1 |
| SULLIVAN DRILLING INC | 1 |
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Well records by ZIP code in Mono County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Mammoth Lakes (93546) — 405 wells, median 235 ft
- Coleville (96107) — 311 wells, median 189 ft
- Bishop (93514) — 241 wells, median 193 ft
- Bridgeport (93517) — 130 wells, median 150 ft
- Topaz (96133) — 115 wells, median 180 ft
- Benton (93512) — 69 wells, median 220 ft
- Lee Vining (93541) — 57 wells, median 240 ft
Method: medians computed from DWR records (filed well completion reports, water-supply uses only (destruction, repair and monitoring 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.