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1151. World Shoreline Boundary between Lake Islands and Lakes, 2014 (Low-resolution)
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between lake islands and lakes at low resolution. Lake islands, or inland islands, are landmasses in... United States. National Geospatial-Intelligence Agency.
1152. WPC 4th Order Streams: Western Pennsylvania
2004. David Homans, Pennsylvania Natural Heritage Program. All Streams of 4th order or greater in the region surrounding data in the Pennsylvania Aquatic Database (PAD) developed by the Pennsylvania Natural...
1153. WPC 5th Order Streams: Western Pennsylvania
2004. David Homans, Pennsylvania Natural Heritage Program. All Streams of 5th order or greater in the region surrounding data in the Pennsylvania Aquatic Database (PAD) developed by the Pennsylvania Natural...
1154. WPC aquatic sampling locations: Western Pennsylvania
2004. Ohio River Valley Water Sanitation Commission. Point file outlining aquatic sampling locations (fish, chemistry and benthic macroinvertebrates) in the Ohio River Valley Water Sanitation Commissi...
1155. WPC Drainage area polygons for each RF3 river reach: Western Pennsylvania
2004. David Homans. Drainage area polygons for each RF3 river reach flowing in Pennsylvania.
1156. WPC HUC12 (includes percentage land-use): Western Pennsylvania
2004. USGS. 12 digit USGS hydrological unit code (HUC) watersheds within Pennsylvania. Includes percentage land-use information from the National Land Cover Da...
1157. WPC non-protected sites: Western Pennsylvania
2004. Pennsylvania Natural Heritage Program. Final export of all aquatic sampling sites from the Pennsylvania Aquatic Database (PAD) at the completion of Phase I of the Pennsylvania Aquatic Co...
1158. WPC RF3 river reaches (includes percentage land-use): Western Pennsylvania
2004. David Homans, Pennsylvania Natural Heritage Program. Drainage area polygons for each RF3 river reach flowing in Pennsylvania. Includes percentage land-use information from the National Land Cover Data...
1159. Zebra Mussel Distribution: United States
2008. U.S. Geological Survey. The concern caused by the explosive spread of the zebra mussel, (Dreissena polymorpha), within the United States resulted in passage of the Nonindi...