⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Cowlitz County › Kelso (98626)

Kelso, WA (98626): well depth, water level & drilling cost

✓ 1,206 Ecology records · Cowlitz County

223 ftmedian well depth
138 ft–347 fttypical depth range
91 ftmedian static water level
11 gpmmedian yield (370 tests)

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How deep are wells in Kelso (98626), Washington?

The median drilled well depth in Kelso (98626) is 223 ft, based on 1,202 wells with recorded depths in the state Ecology database. Half fall between 138 ft and 347 ft; 90% are shallower than 485 ft.

How much does it cost to drill a well in Kelso (98626)?

Applying published per-foot rates to the local median depth of 226 ft: drilling and casing alone typically runs $5,650–$14,690; a complete system including pump, pressure tank, and hookup typically runs $13,560–$22,600. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Kelso (98626)?

The median static water level is 91 ft below ground surface (middle half of wells: 48 ft–160 ft), from 384 measurements.

Drilled depth distribution

0–50 ft 27 50–100 ft 113 100–150 ft 219 150–200 ft 171 200–300 ft 251 300–400 ft 198 400–600 ft 173 600+ ft 50
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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.