Yakima Basin Ground Water Studies

The groundwater resources of the Yakima Basin are the focus of this cooperative study between the:
  • Bureau of Reclamation
  • United States Geological Survey (USGS)
  • Washington State Department of Ecology
  • Yakama Nation


The objectives of the study are to describe the ground-water flow system and its interaction with Water Resources Division, and to integrate this information into a water-resources management tool--a numerical model.

Currently, there is a moratorium on groundwater water rights in the Yakima Basin. These models will then be used to develop legal and policy recommendations for future groundwater withdrawals. 
Water Balance Diagram
Water Balance Components
  • Predevelopment Components
    • Baseflow
    • Canopy Intraception
    • Evapotranspiration
    • Interflow
    • Surface Runoff

  • Post Development Components
    • Baseflow
    • Interflow
    • Surface Runoff
    • Transpiration