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Tornados Pennsylvania 1950 to 2004

2005. National Weather Service, Storm Prediction Center. This map layer shows tornado touchdown points in the United States, Puerto Rico, and the U.S. Virgin Islands, from 1950 to 2004. Statistical data w...

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Eastern Brook Trout Joint Venture: Pennsylvania

2006. The Eastern Brook Trout Joint Venture (EBTJV) is the nation's first pilot project under the National Fish Habitat Initiative, which directs locally...

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National Flood Hazard Layer: Lehigh County, Pennsylvania

2009. Federal Emergency Management Agency. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

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National Flood Hazard Layer: Perry County, Pennsylvania

2009. Federal Emergency Management Agency. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

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National Flood Hazard Layer: Synder County, Pennsylvania

2007. Federal Emergency Management Agency. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

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National Flood Hazard Layer: Union County, Pennsylvania

2009. Federal Emergency Management Agency. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

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Zebra Mussel Distribution: United States

2008. United States Geological Survey (USGS). The concern caused by the explosive spread of the zebra mussel, (Dreissena polymorpha), within the United States resulted in passage of the Nonindi...

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Street Edge of Pavement: Allegheny County, Pennsylvania

2006. Allegheny County Division of Computer Services Geographic Information Systems Group. Edge of Pavements are the edges of all public thoroughfares including paved roads, unpaved roads, bridges, overpasses, tunnels, alleys, stairways a...

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Chesapeake Bay Watershed Land Cover Data Series 2006

2006. United States Geological Survey (USGS). To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...

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100 Year Flood: Lycoming County, Pennsylvania

2008. The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary...

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500 Year Flood: Lycoming County, Pennsylvania

2008. The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary...