 The Schuylkill drains the majority of the county while some western and northern areas of the county are drained by the Susquehanna River.The Swatara Creek, Wiconisco Creek, Mahantango Creek, Mahanoy Creek, and Catawissa Creek all start in Schuylkill County and are tributaries of the Susquehanna.Areas of the eastern portion of the county drain into the Lehigh River via the Quakake Creek, Nesquehoning Creek, Mahoning Creek, and Lizard Creek, all of which also start in the county.