https://or.water.usgs.gov/proj/umatilla_gw/summary.html
Objectives : Develop, test, and refine a conceptual model of the hydrologic system of the Umatilla Basin.
Describe the hydrologic system through reports and presentations that promote a common understanding of the resource within the Umatilla Basin.
Construct numerical models that accurately represent the hydrologic system and can be used as tools to evaluate the effects of proposed management alternatives.
Use the hydrologic models to identify optimal management alternatives based on specific management objectives and constraints on water resources.