Marsh Creek is a 26.6-mile-long (42.8 km) tributary of the Monocacy River in south-central Pennsylvania and north-central Maryland in the United States.
Marsh Creek and Rock Creek join below Gettysburg and the Gettysburg Battlefield to form the Monocacy River. The height of land between Marsh and Rock creeks is the site of the Battle of Gettysburg.
- ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed August 15, 2011
Coordinates: 39°43′6″N 77°13′38″W / 39.71833°N 77.22722°W