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Office of Columbia River

Web Tools

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.

Quinquennial Water Supply/Demand Forecast

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