Geographic features: The Susquehanna River flows southeast through high, flat-topped plateaus separated by steep-sided valleys. Midway, the Susquehanna River joins the Lackawanna River before turning and flowing southwest towards Sunbury, Pennsylvania. The terrain in the southern portion of the subbasin consists of northeast-southwest trending ridges and valleys.
The major population center in the subbasin is along what is knows as the Wyoming Valley area from Carbondale in the north along the Lackawanna River to Nanticoke in the south along the Susquehanna River. The cities of Scranton and Wilkes-Barre are located in this highly urbanized coal mining region.
Drainage area: 3,771 square miles
Major tributaries: Lackawanna
Population: 702,700* (16.9%
of the total basin population)
*Population estimated from 2010 Census
Major population centers: Scranton, Wilkes-Barre, Carbondale, Sunbury (all in Pennsylvania)