The National Weather Service predicts minor to moderate flooding on Potomac River tributaries including Antietam Creek, Seneca Creek and the Monocacy River.
Authorities say they have found the body of swimmer who went missing in the Monocacy River this week.
National Park Service archaeologists are hoping to learn more this summer about a slave village unearthed within Monocacy National Battlefield.
Rising rivers and melting snow are all combining to cause floods up and down the eastern seaboard, and the worst may not be over for thousands of people who live in flood-prone areas.
The rain is still coming down, and there are flood warnings in effect for large parts of the Baltimore area. In addition, Governor Martin O’Malley has declared a state of emergency for the state.