Sediment from the Conowingo Dam is threatening the efforts to clean up the Chesapeake Bay.
Bruce Michael with the Department of Natural Resources said that Exelon must take into account the flow of as part of the relicensing of its hydro-electric power plant.
Exelon’s license expires in September 2014 and Michael said that the sediments behind the dam have been identified as the highest priority issue for relisencing.
A new study by the Chesapeake Bay Program found that sediment from the dam was increasing.
The dam has kept sediments and other pollutants from getting into the bay but scientists say it is reaching capacity.