⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Cowlitz County

Cowlitz County, Washington: well depth, water level & drilling cost

✓ 9,867 Ecology records · verified 2026-06-11

200 ftmedian well depth
115 ft–320 fttypical depth range
71 ftmedian static water level
13 gpmmedian yield (2,667 tests)

How deep are wells in Cowlitz County, Washington?

The median drilled well depth in Cowlitz County is 200 ft, based on 9,061 wells with recorded depths in the state Ecology database. Half of all wells fall between 115 ft and 320 ft; 90% are shallower than 464 ft. Wells drilled since 2016 have a median depth of 202 ft.

How much does it cost to drill a well in Cowlitz County?

Applying published per-foot rates to the local median depth of 202 ft: drilling and casing alone typically runs $5,050–$13,130; a complete system including pump, pressure tank, and hookup typically runs $12,120–$20,200. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Cowlitz County?

The median static water level is 71 ft below ground surface (middle half of wells: 31 ft–134 ft), from 2,328 measurements.

How much water do wells in Cowlitz County produce?

The median tested yield is 13 gpm (middle half: 7 gpm–25 gpm), from 2,667 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 557 50–100 ft 1,249 100–150 ft 1,468 150–200 ft 1,152 200–300 ft 1,940 300–400 ft 1,207 400–600 ft 1,133 600+ ft 355

Who drills wells in Cowlitz County?

Licensed drillers by number of wells completed in this county since 2016, per filed well reports (license roster: Washington Department of Ecology).

DrillerWells since 2016
Andrew Orth540
Christopher Mcghee364
Michael Pitner243
Timothy Lapham233
Reid Redinger129
Willie Williams53
Lonnie Bopp43
Joel Welsh42

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Method: medians computed from Ecology records (water wells only — soil/environmental borings and decommissions excluded; depths 0–5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.