Weir simulation reaches targeted depth in Augusta

SAVANNAH, Ga. – The Savannah River level in the Augusta area reached target elevation today as part of the simulation planned to allow the U.S. Army Corps of Engineers Savannah District, as well as the public, to observe the summer conditions expected with the fish passage recommended plan, known as Alternative 2-6d.

The recommended plan involves construction of a rock weir which would take the place of the New Savannah Bluff Lock and Dam in order to maintain a pool in Augusta.

We intend to hold the river level at the simulated elevation for about seven days. During this time Corps officials will be in the area for several days observing conditions and collecting aerial imagery along the shoreline with a drone.

The simulation will also enable engineers to compare computer model projections of shoreline and depth with observed conditions of the simulation. We created a Shoreline Mapping webpage where users can view Savannah District’s model projections of depth and shoreline at a river flow of 5,000 cubic feet per second, which is the low end of average flows. See the web tool here.

Officials expect to release the draft report on the plan Feb. 14. The report discloses all the Corps’ work, modelling and analysis. A 30-day comment period will follow the release of the draft report. This will allow the general public to review the report, observe simulated conditions and if desired, submit informed comments.

As part of the 30-day comment period Savannah District officials plan to hold an interactive workshop in the Augusta area in early March where people can attend to learn more about the report through various stations staffed with experts, as well as provide comments either in writing or through dictation. The workshop date will be announced once confirmed.

Savannah District officials will address each comment in writing, in accordance with the National Environmental Policy Act.

The Fish Passage project is an environmental mitigation feature of the Savannah Harbor Expansion Project, and is required mitigation in accordance with the Endangered Species Act and the Water Infrastructure Improvements for the Nation (WIIN) Act. The project will enable the endangered shortnose and Atlantic sturgeon, among other fish species to regain access to their historic spawning grounds.

Due to increased rainfall since November, river flows have been three to four times greater than average flow volumes causing the water level to remain about a foot above normal levels.

Local residents may be accustomed to seeing water levels that are higher than normal for the last three months. Because of this the simulation appears more dramatic than when compared to what is typically observed in downtown Augusta between June and October.

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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