California Well Data › Yolo County

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

Name: Yolo County, California water well statistics
Creator: California Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 12,461 DWR records · verified 2026-10-02

232 ftmedian well depth

140 ft–380 fttypical depth range

52 ftmedian static water level

250 gpmmedian yield (960 tests)

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How deep are wells in Yolo County, California?

The median drilled well depth in Yolo County is 232 ft, based on 8,977 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.

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 1,284 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 960 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 531 50–100 ft 856 100–150 ft 1,055 150–200 ft 1,143 200–300 ft 2,069 300–400 ft 1,202 400–600 ft 1,387 600+ ft 734

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).

Driller	Wells since 2016
EATON DRILLING CO LLC	128
PARKS WATER RESOURCES	112
PARKS WATER RESOURCES LLC	73
SULLIVAN DRILLING INC	70
CACHE CREEK DRILLING	56
WILDROSE DRILLING LLC	24
NOR - CAL PUMP & WELL DRILLING INC	21
WOODWARD DRILLING COMPANY INC	21

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Well records by ZIP code in Yolo County

Median depth, water level, and yield for each ZIP code with recorded wells.

Woodland (95695) — 1,609 wells, median 231 ft
Yolo (95697) — 1,325 wells, median 237 ft
Winters (95694) — 1,264 wells, median 239 ft
Davis (95616) — 875 wells, median 296 ft
Dunnigan (95937) — 863 wells, median 280 ft
Woodland (95776) — 800 wells, median 260 ft
Madison (95653) — 616 wells, median 256 ft
Zamora (95698) — 531 wells, median 320 ft
Davis (95617) — 511 wells, median 349 ft
Esparto (95627) — 500 wells, median 225 ft
Knights Landing (95645) — 417 wells, median 170 ft
Capay (95607) — 370 wells, median 200 ft
West Sacramento (95798) — 344 wells, median 25 ft
Sacramento (95899) — 340 wells, median 210 ft
West Sacramento (95799) — 309 wells, median 180 ft
Guinda (95637) — 249 wells, median 230 ft
West Sacramento (95605) — 235 wells, median 148 ft
Clarksburg (95612) — 219 wells, median 144 ft
Brooks (95606) — 175 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.