The U.S. Army Corps of Engineers Pittsburgh District operates the Loyalhanna Lake Dam to provide essential flood protection for surrounding valleys and rivers, safeguarding local ecosystems and communities located downriver from Saltsburg, Pennsylvania, Sept. 23, 2023. The Pittsburgh District celebrates National Public Lands Day each year by inviting the community to help clean up and complete improvement projects at its various reservoirs. (U.S. Army Corps of Engineers Pittsburgh District photo by Frank J. Strumila)