⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Cowlitz County › Kelso (98626)

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

✓ 663 Ecology records · Cowlitz County

225 ftmedian well depth
141 ft–345 fttypical depth range
93 ftmedian static water level
11 gpmmedian yield (360 tests)

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

The median drilled well depth in Kelso (98626) is 225 ft, based on 662 wells with recorded depths in the state Ecology database. Half fall between 141 ft and 345 ft; 90% are shallower than 484 ft.

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

Applying published per-foot rates to the local median depth of 230 ft: drilling and casing alone typically runs $5,750–$14,950; a complete system including pump, pressure tank, and hookup typically runs $13,800–$23,000. Actual quotes depend on site access, geology, and casing requirements.

Get quotes from drillers who work in Kelso (98626)

Free for property owners. We route your request only to licensed drillers who actually file well logs in Cowlitz County — never sold elsewhere.

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

The median static water level is 93 ft below ground surface (middle half of wells: 47 ft–161 ft), from 314 measurements.

Pull every recorded well near a Kelso (98626) address — $19

Drilled depth distribution

0–50 ft 13 50–100 ft 60 100–150 ft 115 150–200 ft 96 200–300 ft 134 300–400 ft 123 400–600 ft 88 600+ ft 33
Looking at a specific property in Kelso (98626)?

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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.