Revised declaration lowers Thurmond outflows to 33,200 cfs

By Tracy Robillard, Public Affairs Specialist

Due to recent increased rainfall throughout the Savannah River Basin and upcoming weather forecasts, water managers with the U.S. Army Corps of Engineers Savannah District issued a revised declaration on July 11.

The good news is that Tropical Storm Chantal has degenerated, and the National Weather Service is no longer forecasting heavy rainfall in the basin due to that storm system. The 7-day forecast suggests between 1 to 1.5 inches of rainfall over the upper part of the basin, and 2 to 3 inches in the lower basin near Savannah.

This image shows cumulative rainfall predicted by the National Weather Service for the next 7 days. Issued July 12, 2013 by the NWS.

This image shows cumulative rainfall predicted by the National Weather Service for the next 7 days. Issued July 12, 2013 by the NWS.

 

Our revised declaration lowers outflows from the Thurmond Dam from 37,000 cfs to 33,200 cfs. It also calls for outflows at the Hartwell and Russell dams this weekend: 6,800 cfs at Hartwell and 13,000 cfs at Russell. Normally we don’t release at Hartwell and Russell and Saturdays and Sundays, but we are releasing this weekend to keep the reservoirs from raising any further based on inflows.

Over the next several weeks we aim to bring the reservoirs back down to guide curve, or “full pool” in accordance with our water control manual. Guide curve for this time of year is 660 ft-msl at Hartwell, 475 ft-msl at Russell, and 330 ft-msl at Thurmond. If higher-than-average rainfall continues, it could take anywhere from 14 to 45 days or more to reach guide curve at all three reservoirs.

Click here to view declaration – 07/11/2013

 

 

About US Army Corps of Engineers Savannah District

The U.S. Army Corps of Engineers Savannah District oversees a multi-million dollar military construction program at 11 Army and Air Force installations in Georgia and North Carolina. We also manage water resources across the Coastal Georgia region, including maintenance dredging of the Savannah and Brunswick harbors; operation of three hydroelectric dams and reservoirs along the upper Savannah River; and administration of an extensive stream and wetland permitting and mitigation program within the state of Georgia. Follow us on Twitter @SavannahCorps and on Facebook.com/SavannahCorps
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