⟁ California Well Data field records · 2026 survey

California Well Data › Contra Costa County › Walnut Creek (94596)

Walnut Creek, CA (94596): well depth, water level & drilling cost

✓ 162 DWR records · Contra Costa County

57 ftmedian well depth
34 ft–171 fttypical depth range
25 ftmedian static water level
15 gpmmedian yield (19 tests)

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How deep are wells in and around Walnut Creek (94596), California?

The median drilled well depth in and around Walnut Creek (94596) is 57 ft, based on 88 wells with recorded depths in the state DWR database. Half fall between 34 ft and 171 ft; 90% are shallower than 234 ft.

How much does it cost to drill a well in and around Walnut Creek (94596)?

Applying published per-foot rates to the local median depth of 57 ft: drilling and casing alone typically runs $1,425–$3,705; a complete system including pump, pressure tank, and hookup typically runs $3,420–$5,700. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Walnut Creek (94596)?

The median static water level is 25 ft below ground surface (middle half of wells: 19 ft–34 ft), from 35 measurements.

Drilled depth distribution

0–50 ft 40 50–100 ft 15 100–150 ft 7 150–200 ft 5 200–300 ft 15 300–400 ft 6 400–600 ft 0 600+ ft 0
Looking at a specific property in Walnut Creek (94596)?

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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.