⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Okanogan County › Coulee Dam (99116)

Coulee Dam, WA (99116): well depth, water level & drilling cost

✓ 73 Ecology records · Okanogan County

203 ftmedian well depth
100 ft–300 fttypical depth range
60 ftmedian static water level
5 gpmmedian yield (9 tests)

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How deep are wells in and around Coulee Dam (99116), Washington?

The median drilled well depth in and around Coulee Dam (99116) is 203 ft, based on 73 wells with recorded depths in the state Ecology database. Half fall between 100 ft and 300 ft; 90% are shallower than 400 ft.

How much does it cost to drill a well in and around Coulee Dam (99116)?

Applying published per-foot rates to the local median depth of 203 ft: drilling and casing alone typically runs $5,075–$13,195; a complete system including pump, pressure tank, and hookup typically runs $12,180–$20,300. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Coulee Dam (99116)?

The median static water level is 60 ft below ground surface (middle half of wells: 57 ft–68 ft), from 9 measurements.

Drilled depth distribution

0–50 ft 1 50–100 ft 15 100–150 ft 16 150–200 ft 2 200–300 ft 18 300–400 ft 12 400–600 ft 8 600+ ft 1
Looking at a specific property in Coulee Dam (99116)?

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Part of Okanogan 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.