Close-up of Power House and Spillway at Conowingo

Close-up of Power House and Spillway at Conowingo Maryland


Stock #: 502928
Type: Postcard
Era: Linen
City: Conowingo
State: Maryland (MD)
Size: 3.5" x 5.5" (9 x 14 cm)

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Additional Details:
The Hydro-Electric Plant on the Susquehanna River at Conowingo, Maryland, owned by the Philadelphia Electric Company System, is the largest water-power development in the United States, with the exception of Niagara Falls. The dam, almost a mile across and surmounted by a highway bridge 20 feet wide, forms a lake fourteen miles long. The initial installation is 378,000 H.P. which will eventually be increased to 594,000 H.P. A 220,000 volt transmission line carries current to Philadelphia. Work was started March 8, 1926, and the first units were put into operation March 1, 1928.