⟁ California Well Data field records · 2026 survey

California Well Data › Marin County › San Rafael (94901)

San Rafael, CA (94901): well depth, water level & drilling cost

✓ 347 DWR records · Marin County

195 ftmedian well depth
88 ft–276 fttypical depth range
39 ftmedian static water level
7 gpmmedian yield (116 tests)

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How deep are wells in and around San Rafael (94901), California?

The median drilled well depth in and around San Rafael (94901) is 195 ft, based on 168 wells with recorded depths in the state DWR database. Half fall between 88 ft and 276 ft; 90% are shallower than 337 ft.

How much does it cost to drill a well in and around San Rafael (94901)?

Applying published per-foot rates to the local median depth of 195 ft: drilling and casing alone typically runs $4,875–$12,675; a complete system including pump, pressure tank, and hookup typically runs $11,700–$19,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around San Rafael (94901)?

The median static water level is 39 ft below ground surface (middle half of wells: 20 ft–73 ft), from 99 measurements.

Drilled depth distribution

0–50 ft 34 50–100 ft 10 100–150 ft 22 150–200 ft 20 200–300 ft 47 300–400 ft 28 400–600 ft 7 600+ ft 0
Looking at a specific property in San Rafael (94901)?

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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.