⟁ California Well Data field records · 2026 survey

California Well Data › Yolo County

Yolo County, California: well depth, water level & drilling cost

✓ 12,456 DWR records · verified 2026-08-14

232 ftmedian well depth
140 ft–380 fttypical depth range
52 ftmedian static water level
250 gpmmedian yield (959 tests)

How deep are wells in Yolo County, California?

The median drilled well depth in Yolo County is 232 ft, based on 8,972 wells with recorded depths in the state DWR database. Half of all wells fall between 140 ft and 380 ft; 90% are shallower than 560 ft. Wells drilled since 2016 have a median depth of 430 ft.

How much does it cost to drill a well in Yolo County?

Applying published per-foot rates to the local median depth of 430 ft: drilling and casing alone typically runs $10,750–$27,950; a complete system including pump, pressure tank, and hookup typically runs $25,800–$43,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Yolo County?

The median static water level is 52 ft below ground surface (middle half of wells: 25 ft–93 ft), from 1,283 measurements.

How much water do wells in Yolo County produce?

The median tested yield is 250 gpm (middle half: 60 gpm–1,500 gpm), from 959 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 531 50–100 ft 856 100–150 ft 1,055 150–200 ft 1,143 200–300 ft 2,067 300–400 ft 1,201 400–600 ft 1,386 600+ ft 733

Who drills wells in Yolo County?

Companies by number of wells completed in this county since 2016, per filed well completion reports (California Department of Water Resources).

DrillerWells since 2016
EATON DRILLING CO LLC128
PARKS WATER RESOURCES112
SULLIVAN DRILLING INC70
PARKS WATER RESOURCES LLC69
CACHE CREEK DRILLING56
WILDROSE DRILLING LLC24
NOR - CAL PUMP & WELL DRILLING INC21
WOODWARD DRILLING COMPANY INC21

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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.