⟁ California Well Data field records · 2026 survey

California Well Data › Contra Costa County › Oakley (94561)

Oakley, CA (94561): well depth, water level & drilling cost

✓ 576 DWR records · Contra Costa County

152 ftmedian well depth
120 ft–187 fttypical depth range
39 ftmedian static water level
65 gpmmedian yield (56 tests)

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How deep are wells in and around Oakley (94561), California?

The median drilled well depth in and around Oakley (94561) is 152 ft, based on 315 wells with recorded depths in the state DWR database. Half fall between 120 ft and 187 ft; 90% are shallower than 256 ft.

How much does it cost to drill a well in and around Oakley (94561)?

Applying published per-foot rates to the local median depth of 152 ft: drilling and casing alone typically runs $3,800–$9,880; a complete system including pump, pressure tank, and hookup typically runs $9,120–$15,200. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Oakley (94561)?

The median static water level is 39 ft below ground surface (middle half of wells: 22 ft–55 ft), from 169 measurements.

Drilled depth distribution

0–50 ft 48 50–100 ft 16 100–150 ft 86 150–200 ft 98 200–300 ft 44 300–400 ft 14 400–600 ft 9 600+ ft 0
Looking at a specific property in Oakley (94561)?

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Part of Contra Costa County well records.

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), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.