1955 Map of Holtwood

About this map

The Holtwood Dam stands as the central engineering feat of this riverine landscape, where the Susquehanna River is partitioned into the Holtwood Reservoir and the Conowingo Reservoir. This mid-century survey reveals a transition between industrial energy production at the Power Plant and the rural agricultural life of Lancaster and York Counties. Scattered along the hills are legacy sites such as Erbs Mill and Coyne Lock, providing evidence of earlier generations who relied on the river's power and navigation before the modern hydroelectric era.