Grand Coulee, Washington Drillers and Service Providers

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Locate top-notch water well drillers, groundwater, and drought information in grand coulee, Washington. Whether you need a new well, repairs, or regular maintenance, find experts through our listings.

Interactive Water Well Map – Estimate your new well's depth

Visit the Grand Coulee Water Well Map to view the water, irrigation, and geothermal wells.

Water Well Professionals in Grand Coulee, Washington – Water Well Drilling, Service, and Treatment

O'Connell Drilling & Supply
21B Brewster Airport Rd
Water Systems
Moomaw Drilling

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Water Well Terminology

IsotropyUniformity in all orientations; opposite of anisotropy.

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Grand Coulee Statistics

Geology
AquifierColumbia Plateau basaltic-rock aquifers
Rock FormationIgneous and metamorphic-rock aquifers
Well Information*
Well Depth-- (ft)
SWL-- (ft)
Bedrock Depth-- (ft)
Yield-- (gpm)
* Average within 5km
Drought Monitor
July 8, 2025D1 
July 1, 2025D1 
June 24, 2025D1 
June 17, 2025D1 
June 10, 2025D0 
June 3, 2025D0 
May 27, 2025N 
May 20, 2025N