California Well Data › Trinity County
Trinity County, California: well depth, water level & drilling cost
✓ 3,155 DWR records · verified 2026-10-02
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How deep are wells in Trinity County, California?
The median drilled well depth in Trinity County is 178 ft, based on 3,147 wells with recorded depths in the state DWR database. Half of all wells fall between 100 ft and 248 ft; 90% are shallower than 320 ft. Wells drilled since 2016 have a median depth of 240 ft.
How much does it cost to drill a well in Trinity County?
Applying published per-foot rates to the local median depth of 240 ft: drilling and casing alone typically runs $6,000–$15,600; a complete system including pump, pressure tank, and hookup typically runs $14,400–$24,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Trinity County?
The median static water level is 60 ft below ground surface (middle half of wells: 30 ft–115 ft), from 806 measurements.
How much water do wells in Trinity County produce?
The median tested yield is 10 gpm (middle half: 5 gpm–20 gpm), from 2,154 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Trinity County?
Companies by number of wells completed in this county since 2016, per filed well completion reports (California Department of Water Resources).
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Well records by ZIP code in Trinity County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Hayfork (96041) — 934 wells, median 200 ft
- Lewiston (96052) — 377 wells, median 150 ft
- Douglas City (96024) — 262 wells, median 191 ft
- Weaverville (96093) — 252 wells, median 152 ft
- Junction City (96048) — 232 wells, median 107 ft
- Mad River (95552) — 214 wells, median 180 ft
- Hyampom (96046) — 165 wells, median 125 ft
- Platina (96076) — 147 wells, median 180 ft
- Salyer (95563) — 137 wells, median 120 ft
- Trinity Center (96091) — 133 wells, median 137 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.