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Open-File Report 2010–1065

Prepared in cooperation with The Nature Conservancy Global Freshwater Program

Monitoring and Evaluation of Environmental Flow Prescriptions for Five Demonstration Sites of the Sustainable Rivers Project

By Christopher P. Konrad, U.S. Geological Survey and The Nature Conservancy, Seattle, Washington


The Nature Conservancy has been working with U.S. Army Corps of Engineers (Corps) through the Sustainable Rivers Project (SRP) to modify operations of dams to achieve ecological objectives in addition to meeting the authorized purposes of the dams. Modifications to dam operations are specified in terms of environmental flow prescriptions that quantify the magnitude, duration, frequency, and seasonal timing of releases to achieve specific ecological outcomes. Outcomes of environmental flow prescriptions implemented from 2002 to 2008 have been monitored and evaluated at demonstration sites in five rivers: Green River, Kentucky; Savannah River, Georgia/South Carolina; Bill Williams River, Arizona; Big Cypress Creek, Texas; and Middle Fork Willamette River, Oregon. Monitoring and evaluation have been accomplished through collaborative partnerships of federal and state agencies, universities, and nongovernmental organizations.

First posted March 24, 2010

For additional information contact:
Director, Washington Water Science Center
U.S. Geological Survey, 934 Broadway Suite 300
Tacoma, Washington 98402

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Konrad, C.P., 2010, Monitoring and evaluation of environmental flow prescriptions for five demonstration sites of the Sustainable Rivers Project: U.S. Geological Survey Open-File Report 2010-1065, 22 p.




Demonstration Sites with Implemented Environmental Flows in the Sustainable River Project


References Cited

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