⟁ California Well Data field records · 2026 survey

California Well Data › Contra Costa County › Walnut Creek (94598)

Walnut Creek, CA (94598): well depth, water level & drilling cost

✓ 185 DWR records · Contra Costa County

129 ftmedian well depth
53 ft–200 fttypical depth range
24 ftmedian static water level
20 gpmmedian yield (41 tests)

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How deep are wells in and around Walnut Creek (94598), California?

The median drilled well depth in and around Walnut Creek (94598) is 129 ft, based on 107 wells with recorded depths in the state DWR database. Half fall between 53 ft and 200 ft; 90% are shallower than 300 ft.

How much does it cost to drill a well in and around Walnut Creek (94598)?

Applying published per-foot rates to the local median depth of 129 ft: drilling and casing alone typically runs $3,225–$8,385; a complete system including pump, pressure tank, and hookup typically runs $7,740–$12,900. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Walnut Creek (94598)?

The median static water level is 24 ft below ground surface (middle half of wells: 16 ft–40 ft), from 60 measurements.

Drilled depth distribution

0–50 ft 26 50–100 ft 16 100–150 ft 19 150–200 ft 14 200–300 ft 20 300–400 ft 7 400–600 ft 5 600+ ft 0
Looking at a specific property in Walnut Creek (94598)?

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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.