Pennsylvania Level 4 Ecoregions Map
| er58h - Reading Prong |
| er60a - Glaciated Low Plateau |
| er60b - Northeastern Uplands |
| er60c - Catskills Transition |
| er60e - Glaciated Allegheny Hills |
| er61b - Mosquito Creek/Pymatuning Lowlands |
| er61c - Low Lime Drift Plain |
| er62a - Pocono High Plateau |
| er62b - Low Poconos |
| er62c - Glaciated Allegheney High Plateau |
| er62d - Unglaciated Allegheney High Plateau |
| er62e - Low Catskills |
| er63a - Delaware River Terraces and Uplands |
| er64a - Triassic Lowlands |
| er64b - Trap Rock and Conglomerate Uplands |
| er64c - Piedmont Uplands |
| er64d - Piedmont Limestone/Dolomite Lowlands |
| er66a - Northern Igneous Ridges |
| er66b - Northern Sedimentary and Metasedimentary Ridges |
| er67a - Northern Limestone/Dolomite Valleys | er67a - Northern Shale Valleys |
| er67c - Northern Sandstone Ridges | er67c - Northern Dissected Ridges and Knobs |
| er67e - Anthracite Subregion | er67e - Northern Glaciated Limestone Valleys |
| er67k - Northern Glaciated Shale and Slate Valleys | er67k - Northern Glaciated Limestone Ridges, Valleys, and Terraces |
| er67m - Northern Glaciated Ridges | er67m - Forested Hills and Mountains |
| er69b - Uplands and Valleys of Mixed Land Use | er69b - Permian Hills |
| er70b - Monongahela Transition Zone | er70b - Pittsburgh Low Plateau |
| er83a - Erie Lake Plain |
Based on Ecoregions developed by the EPA this map describe areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources, as well as similarity of climate that can assist Pennsylvania gardenders.
