California Well Data › Mendocino County
Mendocino County, California: well depth, water level & drilling cost
✓ 14,949 DWR records · verified 2026-10-02
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How deep are wells in Mendocino County, California?
The median drilled well depth in Mendocino County is 140 ft, based on 12,018 wells with recorded depths in the state DWR database. Half of all wells fall between 80 ft and 200 ft; 90% are shallower than 260 ft. Wells drilled since 2016 have a median depth of 200 ft.
How much does it cost to drill a well in Mendocino 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 Mendocino County?
The median static water level is 34 ft below ground surface (middle half of wells: 18 ft–69 ft), from 5,572 measurements.
How much water do wells in Mendocino County produce?
The median tested yield is 10 gpm (middle half: 5 gpm–25 gpm), from 5,814 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Mendocino 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 |
|---|---|
| WEEKS DRILLING AND PUMP CO | 480 |
| FISCH BROS DRILLING | 471 |
| SUPERIOR PUMP & DRILLING INC | 277 |
| CASCADE DRILLING L P | 35 |
| J W MORRISON INC | 26 |
| VICS WELL DRILLING INC | 19 |
| CLEAR HEART DRILLING INC | 17 |
| FISCH DRILLING AND PUMP INC | 15 |
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Well records by ZIP code in Mendocino County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Fort Bragg (95437) — 1,560 wells, median 100 ft
- Redwood Valley (95470) — 1,240 wells, median 151 ft
- Willits (95490) — 1,148 wells, median 160 ft
- Caspar (95420) — 724 wells, median 96 ft
- Calpella (95418) — 609 wells, median 220 ft
- Ukiah (95482) — 538 wells, median 100 ft
- Point Arena (95468) — 532 wells, median 156 ft
- Philo (95466) — 517 wells, median 193 ft
- Talmage (95481) — 514 wells, median 140 ft
- Potter Valley (95469) — 510 wells, median 125 ft
- Dos Rios (95429) — 507 wells, median 128 ft
- Boonville (95415) — 505 wells, median 160 ft
- Gualala (95445) — 500 wells, median 140 ft
- Albion (95410) — 465 wells, median 120 ft
- Laytonville (95454) — 465 wells, median 132 ft
- Navarro (95463) — 424 wells, median 180 ft
- Mendocino (95460) — 423 wells, median 100 ft
- Hopland (95449) — 420 wells, median 160 ft
- Little River (95456) — 316 wells, median 140 ft
- Covelo (95428) — 282 wells, median 150 ft
- Leggett (95585) — 278 wells, median 140 ft
- Branscomb (95417) — 253 wells, median 145 ft
- Yorkville (95494) — 248 wells, median 160 ft
- Comptche (95427) — 173 wells, median 180 ft
- Manchester (95459) — 160 wells, median 103 ft
- Westport (95488) — 142 wells, median 153 ft
- Elk (95432) — 110 wells, median 140 ft
- Piercy (95587) — 56 wells, median 180 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.