⟁ California Well Data field records · 2026 survey

California Well Data › Mono County

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

✓ 1,511 DWR records · verified 2026-08-14

200 ftmedian well depth
120 ft–310 fttypical depth range
65 ftmedian static water level
50 gpmmedian yield (763 tests)

How deep are wells in Mono County, California?

The median drilled well depth in Mono County is 200 ft, based on 1,390 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 231 ft: drilling and casing alone typically runs $5,775–$15,015; a complete system including pump, pressure tank, and hookup typically runs $13,860–$23,100. Actual quotes depend on site access, geology, and casing requirements.

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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 689 measurements.

How much water do wells in Mono County produce?

The median tested yield is 50 gpm (middle half: 25 gpm–100 gpm), from 763 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 92 50–100 ft 141 100–150 ft 227 150–200 ft 191 200–300 ft 344 300–400 ft 174 400–600 ft 142 600+ ft 79

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).

DrillerWells since 2016
BRUCE MACKAY PUMP & WELL SERVICE INC47
MARANATHA DRILLING AND PUMP SERVICE11
J & H DRILLING CO INC8
PARSONS DRILLING INC7
WELSCO CORP5
BC2 ENVIRONMENTAL LLC3
7 H WELL DRILLING1
PACIFIC COAST WELL DRILLING INC1

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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.