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31. Major Watersheds of the Susquehanna River Basin

2006. SRBC. Polygon shapefile that includes the major watersheds of the Susquehanna River Basin (2006 boundary). This file was created by dissolving the wshed2...

32. Middle Susquehanna Subbasin

2006. SRBC. Polygon shapefile of the Middle Susquehanna Subbasin. This file was created from the 2006 subbasin.shp SRBC dataset.

33. National Hydrography Dataset (NHD) - High-resolution: area features

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

34. National Hydrography Dataset (NHD) Flowline: Erie

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

35. National Hydrography Dataset (NHD) Flowline: PA, NY, NJ, MD

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

36. National Hydrography Dataset (NHD) Flowline: Pennsylvania

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

37. National Hydrography Dataset (NHD) Flowline: Pennsylvania (medium resolution)

1999. U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the sream segments or reaches that co...

38. National Hydrography Dataset (NHD) Flowline: Susquehanna

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

39. National Hydrography Dataset (NHD) Flowline: Upper Chesapeake

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

40. National Hydrography Dataset (NHD) Reach: Pennsylvania

2004. USGS. A compilation of all medium resolution reach layers from National Hydrography Datasets in or adjacent to Pennsylvania.