Bureau of Reclamation, Pacific Northwest Region
Umatilla River Basin Storage and Flow Diagram

Clickable Diagram of Umatilla Project water storage and distribution data
NOTE: McKay Dam has 65,534 ac-ft active storage (full-pool) plus 6,000 ac-ft of space exclusive for flood risk management above the normal full pool.

PROVISIONAL DATA - SUBJECT TO CHANGE!

Average daily streamflows indicated in cubic feet per second.
Reservoir levels current as of midnight on date indicated.

Click on image elements for hydrographs.
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