U.S. Dams - Name, Location, Risk-Level, Purpose and Type of Dam Download ArcGIS Shapefiles

The Major Dams of the United States map layer is a subset of the 2005 National Inventory of Dams, extracted by the National Atlas of the United States®. It lists and describes more than 8,100 major dams in the United States, Puerto Rico, and the U.S. Virgin Islands. Major dams include dams 50 feet or more in height, dams with a normal storage capacity of 5,000 acre-feet or more, and dams with a maximum storage capacity of 25,000 acre-feet or more. Descriptive information includes the dam name and location, the risk level associated with the dam, the purposes for which the dam was constructed, and the dam type.

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Mike Meuser

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Download Tornado GIS Shapefiles

U.S. Tornadoes from 1950 through 2008. The United States Tornado Touchdown Points 1950-2008 map layer includes tornado touchdown points for tornadoes that occurred in the United States, Puerto Rico, and the U.S. Virgin Islands. Descriptive information includes the latitude and longitude of the touchdown and lift-off points, the number of fatalities or injuries, an estimate of damage costs, and the classification of the storm on the Fujita Tornado Damage Scale.

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Mike Meuser

GIS Project Development, Data Research and Custom Shapefile Creation
Free GIS Software, Shapefiles, Maps and Tutorials
Free GPS, Aerial, TOPO Maps and News

If you have data, GIS project or custom shapefile needs send me an email

Premium Shapefiles: ZipCode, Indian & Federal Lands, School Districts, Tornadoes, Dams, Climate Change & Global Warming