⟁ California Well Data field records · 2026 survey

California Well Data › Marin County › Ross (94957)

Ross, CA (94957): well depth, water level & drilling cost

✓ 189 DWR records · Marin County

190 ftmedian well depth
58 ft–300 fttypical depth range
27 ftmedian static water level
10 gpmmedian yield (130 tests)

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How deep are wells in and around Ross (94957), California?

The median drilled well depth in and around Ross (94957) is 190 ft, based on 127 wells with recorded depths in the state DWR database. Half fall between 58 ft and 300 ft; 90% are shallower than 380 ft.

How much does it cost to drill a well in and around Ross (94957)?

Applying published per-foot rates to the local median depth of 190 ft: drilling and casing alone typically runs $4,750–$12,350; a complete system including pump, pressure tank, and hookup typically runs $11,400–$19,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Ross (94957)?

The median static water level is 27 ft below ground surface (middle half of wells: 15 ft–60 ft), from 93 measurements.

Drilled depth distribution

0–50 ft 25 50–100 ft 14 100–150 ft 16 150–200 ft 9 200–300 ft 30 300–400 ft 21 400–600 ft 12 600+ 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.