⟁ California Well Data field records · 2026 survey

California Well Data › Sonoma County › Annapolis (95412)

Annapolis, CA (95412): well depth, water level & drilling cost

✓ 96 DWR records · Sonoma County

180 ftmedian well depth
128 ft–223 fttypical depth range
40 ftmedian static water level
10 gpmmedian yield (41 tests)

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How deep are wells in and around Annapolis (95412), California?

The median drilled well depth in and around Annapolis (95412) is 180 ft, based on 79 wells with recorded depths in the state DWR database. Half fall between 128 ft and 223 ft; 90% are shallower than 267 ft.

How much does it cost to drill a well in and around Annapolis (95412)?

Applying published per-foot rates to the local median depth of 180 ft: drilling and casing alone typically runs $4,500–$11,700; a complete system including pump, pressure tank, and hookup typically runs $10,800–$18,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Annapolis (95412)?

The median static water level is 40 ft below ground surface (middle half of wells: 22 ft–76 ft), from 44 measurements.

Drilled depth distribution

0–50 ft 1 50–100 ft 11 100–150 ft 16 150–200 ft 16 200–300 ft 28 300–400 ft 3 400–600 ft 4 600+ ft 0
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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.