Member Login. The following was included in TCTA's 2015-16 Survival Guide, the ultimate reference tool for Texas educators, and is current as of September 2015 but is subject to change.
The Allegheny Mountains run diagonally from the southwest to the northeast with piedmont and coastal plains in the southeast triangle. The Allegheny Front, as it's called, cuts a diagonal line across the state. In the northwest, the plateau falls to the Lake Erie lowlands and, finally, Lake Erie. ( Pennsylvania Close-up)
Pennsylvania base map, Courtesy of Maps.com. This elevation map of Pennsylvania illustrates the number of feet or meters the state rises above sea level. Pennsylvania's lower elevations are in the southeast part of the state and along the Delaware and Susquehanna Rivers. The low point is the Delaware River at sea level.