An aerial view of the Point of Pittsburgh shows ice chunks floating on the Allegheny River, but not on the Monongahela River, as they converge to form the Ohio River. The Allegheny River flows from north to south, brining colder, icy waters to the city in the winter, while the Monongahela River flows from south to north, carrying warmer waters to the same point. The Army Corps of Engineers Pittsburgh District is responsible of operating 23 navigable locks and dams on the Allegheny, Monongahela and Ohio rivers year-round regardless of weather, including in subfreezing icy conditions. The


An aerial view of the Point of Pittsburgh shows ice chunks floating on the Allegheny River, but not on the Monongahela River, as they converge to form the Ohio River. The Allegheny River flows from north to south, brining colder, icy waters to the city in the winter, while the Monongahela River flows from south to north, carrying warmer waters to the same point. The Army Corps of Engineers Pittsburgh District is responsible of operating 23 navigable locks and dams on the Allegheny, Monongahela and Ohio rivers year-round regardless of weather, including in subfreezing icy conditions. The district is responsible for keeping navigation flowing through Pittsburgh, known as the Headwaters District, to and from the rest of the nation. Transporting commodities on the waterways is four times less expensive than by trucks and 33 percent cheaper than by rail.


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Photo credit: © Operation 2024 / Alamy / Afripics
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Keywords: army, corps, district, engineers, icy, navigation, pittsburgh, rivers, usace