The Lackawanna River is a 42-mile-long (68 km) tributary of the Susquehanna River in northeastern Pennsylvania in the United States. It flows through a region of the northern Pocono Mountains that was once a center of anthracite coal mining in the United States. It starts in north Wayne County, Pennsylvania and ends in east Luzerne County, Pennsylvania in Duryea, Pennsylvania. The lower reaches of the river flow through the urban areas of Scranton, which grew around its banks in the 19th century as an industrial center. Its name comes from a Lenni Lenape word meaning "stream that forks".