Storage Reservation Diagrams (SRD)

Storage Reservation Diagrams define the flood control space required in each reservoir to provide flood protection for the Columbia River. Storage space required is a function of time of year and the seasonal runoff volume. The diagrams are designed to provide an orderly evacuation of each reservoir prior to the reservoir refill period with consideration to project operating limits and the regulation of the Columbia River reservoir system. The May 2003 Columbia River Treaty Flood Control Operating Plan contains a complete description of the flood control operation of the Columbia River.

Current SRDs

Previous SRDs


U.S. Army Corps of Engineers, Columbia Basin Water Management Division
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