Engineers opened the gates of the Conowingo Dam this week letting loose tons of water that drowned some nearby trees and flowing over some roadways.
The dam on the Susquehanna River in Cecil County has been of major concern for sediment and nutrients.
But WBOC reports that the state of Pennsylvania has seen heavy rainfall this summer that has brought large amounts of debris and runoff.
The Exelon Corporation has been working on cleaning up the debris in the water.
The company was ordered in 2014 by the state to provide $3 million to study the impact of the dam on the river and the Chesapeake Bay.
