⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Cowlitz County › Silverlake (98645)

Silverlake, WA (98645): well depth, water level & drilling cost

✓ 404 Ecology records · Cowlitz County

178 ftmedian well depth
81 ft–287 fttypical depth range
61 ftmedian static water level
14 gpmmedian yield (32 tests)

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How deep are wells in and around Silverlake (98645), Washington?

The median drilled well depth in and around Silverlake (98645) is 178 ft, based on 401 wells with recorded depths in the state Ecology database. Half fall between 81 ft and 287 ft; 90% are shallower than 400 ft.

How much does it cost to drill a well in and around Silverlake (98645)?

Applying published per-foot rates to the local median depth of 178 ft: drilling and casing alone typically runs $4,450–$11,570; a complete system including pump, pressure tank, and hookup typically runs $10,680–$17,800. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Silverlake (98645)?

The median static water level is 61 ft below ground surface (middle half of wells: 26 ft–122 ft), from 59 measurements.

Drilled depth distribution

0–50 ft 18 50–100 ft 102 100–150 ft 61 150–200 ft 39 200–300 ft 87 300–400 ft 52 400–600 ft 37 600+ ft 5
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Part of Cowlitz County well records.

Method: medians computed from Ecology records (water wells only — soil/environmental borings and decommissions 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.