⟁ California Well Data field records · 2026 survey

California Well Data › Marin County › San Geronimo (94963)

San Geronimo, CA (94963): well depth, water level & drilling cost

✓ 112 DWR records · Marin County

200 ftmedian well depth
100 ft–239 fttypical depth range
40 ftmedian static water level
6 gpmmedian yield (56 tests)

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How deep are wells in and around San Geronimo (94963), California?

The median drilled well depth in and around San Geronimo (94963) is 200 ft, based on 104 wells with recorded depths in the state DWR database. Half fall between 100 ft and 239 ft; 90% are shallower than 300 ft.

How much does it cost to drill a well in and around San Geronimo (94963)?

Applying published per-foot rates to the local median depth of 200 ft: drilling and casing alone typically runs $5,000–$13,000; a complete system including pump, pressure tank, and hookup typically runs $12,000–$20,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around San Geronimo (94963)?

The median static water level is 40 ft below ground surface (middle half of wells: 20 ft–100 ft), from 33 measurements.

Drilled depth distribution

0–50 ft 11 50–100 ft 14 100–150 ft 10 150–200 ft 9 200–300 ft 47 300–400 ft 9 400–600 ft 3 600+ ft 1
Looking at a specific property in San Geronimo (94963)?

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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.