The Cobb County Board of Commissioners agreed Nov. 27 to buy flood storage volume in Wigley Lake for $158,767 and acquire a perpetual flood storage easement around the lake.
Built about 50 years ago, Wigley Lake Dam, a Category 1 structure owned by the Wigley Family Trust, needs improvement to comply with the requirements established by the Georgia Safe Dams Program, according to Cobb Water System Agency Director Steve McCullers in a Nov. 27 memo.
This agreement calls for the Wigley Family Trust to lower the normal pool level of the lake by up to four vertical feet, making an additional 933,926 cubic feet of empty space available to store flood flows.
At $0.17 per cubic foot, the price of this storage volume will be $158,767.
The project will improve flood avoidance measures within the Noonday Creek Watershed in Cobb County.
Also, the project is consistent with Cobb Stormwater Management’s strategy of using existing impoundments more effectively to avoid flooding while providing a means to improve the public safety of such high-hazard dams, McCullers said.
This agreement “will result in substantial benefit to the public in terms of improved stormwater management capabilities,” he added.
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