Ecology Home > Office of Columbia River >
Mainstem Water Resources Information System
Water Resources Explorer
Use the Water Resources Explorer to find information about water rights.
Tutorial, FAQ, and more information.
Go directly to the Water Resources Explorer.
Columbia River Water Budget
Click a point on a map to get information about water allocation,
streamflows, etc on the Columbia River Mainstem.
Go to the Columbia River Water Budget Map.
The Water Supply/Demand Forecast tool allows users to view water supply and demand information for specific watersheds throughout the Columbia River Basin.
Go to the 2011 Columbia River Basin
Long Term Water Supply and Demand Forecast