Basin Status Maps

By selecting one of the river basin tabs below, you will be shown a map of that basin. Each of the major Reclamation Reservoirs in the basin will be represented by a grey drop-down button, each river basin will be represented by a blue hue button. The current capacity of reservoir is displayed on each grey button, click the drop down for more current data and links to historical data dashboards. Each river basin (blue hue) button can be clicked to view a chart with current and historical snow and precipitation charts, depending on the season. Click the to expand the map to a new window. All data is checked for accuracy, however all data is subject to revision.


Please contact the Operations Group via e-mail at for additional questions or information.

Last Updated: 9/19/18