Gettysburg Battlefield
Geography
Within 10 miles (16 km) of the Maryland/Pennsylvania state line, the Gettysburg battlefield is situated in the Gettysburg-Newark Basin of the Pennsylvania Piedmont entirely within the Potomac River Watershed near the Marsh and Rock creeks' triple point with the Susquehanna River Watershed (near Oak Hill) occupying an area 3.33 by 5.33 miles (5.4 km × 8.6 km). Military engagements occurred within and around the borough of Gettysburg (1863 pop. 2,400), which remains the population center for the battlefield area at the intersections of roads that connect the borough with 10 nearby Pennsylvania and Maryland towns (e.g., antebellum turnpikes to Chambersburg, York, and Baltimore.)
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