Groundwater Assessment

Crab Creek Alternate Water Supply Route Study

The US Bureau of Reclamation has proposed to deliver additional irrigation water to the Potholes Reservoir in Grant County, Washington. The proposed route for this supply water is from Billy Clapp Lake through the existing Crab Creek channel and Moses Lake. One purpose of this Environmental Assessment Program study is to collect baseline data on local groundwater-prior to the introduction of the supply water.

Once the supply water is released, continued monitoring will assess the impact of the supply water on local groundwater. Multiple parameters are being analyzed from a network of seven wells along Crab Creek and Rocky Ford Creek. Parameters include water level, temperature, dissolved oxygen, pH, conductivity, nitrogen, phosphorus, chlorides, sulfates, alkalinity carbonate/bicarbonate, and cations.

Environmental Information Management database Study ID: jros0011


Quality Assurance Project Plan: Crab Creek Alternate Water Supply Route Study: Water Quality Monitoring describes the study design.

For more information:

Jim Ross, james.ross@ecy.wa.gov, (509) 329-3425