Pike Lake is located in Pike County and is the center point of Pike Lake State Park. The dam is owned and operated by the Ohio Department of Natural Resources and features an earthen embankment that is 530 feet long and 30 feet high. The drainage area of the lake is 3.3 square miles and the lake has a normal pool surface area of nearly 12 acres. Pike Lake Dam is classified as a Class I dam, with high-hazard potential (Hazard ratings refer to the consequences of dam failure, not the dam’s condition).
The dam is overtopped by 5.5 feet during the Probable Maximum Flood (PMF) event and requires overtopping protection. The PMF is the flood event that may be expected from the most severe combination of critical meteorological and hydrologic conditions that are reasonably possible in a particular drainage area. This rehabilitation of the dam is a risk reduction measure that will include roller compacted concrete (RCC) overtopping protection and replacement of the principal spillway system. In addition to the overtopping protection, an earthen berm will be placed along one side of the dam to limit the amount of the RCC revetment required and to preserve the tomb of an unknown Civil War soldier that is a focal point of the park. Other improvements will include the replacement of the existing lake drain system with a new 24-inch ductile iron pipe and control tower, which will include a 24-inch sluice gate, and a newly designed stilling basin for the principal spillway. The concrete for the spillway will be architecturally stamped and stained to mimic the existing stone walls at the existing outlet of the spillway. All regulatory permitting including U.S. Army Corps of Engineers has been procured prior to construction.
Renovations to the Pike Lake Dam near the intersection of Egypt Hollow Road and Pike Lake Road are currently in progress. Some of the work includes overtopping protection and replacing the spillway and lake drain systems, which have required the lake level to be drained. As a result, boating, fishing and swimming activities will not be available this season. Work began in early March and is expected to be completed by the end of September, 2014. After the work is completed, lake levels will gradually return to normal as precipitation allows and water recreation can again be enjoyed.