1955 Map of Holtwood

About this map

Holtwood Dam stands as the centerpiece of this mid-century landscape, harnessing the Susquehanna River and creating the distinct water levels of Lake Aldred and the Conowingo Reservoir. The map illustrates a complex industrial and transport network, with the Conrail line tracing the riverbanks and an Abandoned Canal hinting at earlier 19th-century trade routes. The terrain is deeply incised by tributaries like Tucquan Creek and Kellys Run, which flow through heavily wooded slopes toward the river's numerous islands, including Duncan Island and Piney Island.