⟁ California Well Data field records · 2026 survey

California Well Data › Sonoma County › Graton (95444)

Graton, CA (95444): well depth, water level & drilling cost

✓ 1,686 DWR records · Sonoma County

200 ftmedian well depth
130 ft–270 fttypical depth range
45 ftmedian static water level
20 gpmmedian yield (986 tests)

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How deep are wells in and around Graton (95444), California?

The median drilled well depth in and around Graton (95444) is 200 ft, based on 1,362 wells with recorded depths in the state DWR database. Half fall between 130 ft and 270 ft; 90% are shallower than 340 ft.

How much does it cost to drill a well in and around Graton (95444)?

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 Graton (95444)?

The median static water level is 45 ft below ground surface (middle half of wells: 30 ft–70 ft), from 925 measurements.

Drilled depth distribution

0–50 ft 61 50–100 ft 163 100–150 ft 196 150–200 ft 227 200–300 ft 450 300–400 ft 188 400–600 ft 73 600+ ft 4
Looking at a specific property in Graton (95444)?

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Part of Sonoma 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.