⟁ California Well Data field records · 2026 survey

California Well Data › Marin County › Nicasio (94946)

Nicasio, CA (94946): well depth, water level & drilling cost

✓ 172 DWR records · Marin County

150 ftmedian well depth
50 ft–269 fttypical depth range
28 ftmedian static water level
10 gpmmedian yield (68 tests)

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How deep are wells in and around Nicasio (94946), California?

The median drilled well depth in and around Nicasio (94946) is 150 ft, based on 128 wells with recorded depths in the state DWR database. Half fall between 50 ft and 269 ft; 90% are shallower than 485 ft.

How much does it cost to drill a well in and around Nicasio (94946)?

Applying published per-foot rates to the local median depth of 150 ft: drilling and casing alone typically runs $3,750–$9,750; a complete system including pump, pressure tank, and hookup typically runs $9,000–$15,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Nicasio (94946)?

The median static water level is 28 ft below ground surface (middle half of wells: 19 ft–60 ft), from 65 measurements.

Drilled depth distribution

0–50 ft 31 50–100 ft 21 100–150 ft 11 150–200 ft 12 200–300 ft 26 300–400 ft 8 400–600 ft 19 600+ ft 0
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Part of Marin 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.