GTOPO30 is a global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer). GTOPO30 was derived from several raster and vector sources of topographic information. For easier distribution, GTOPO30… Read more.
WORLD (INCLUSIVE)
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GIS technology is an effective tool for use in teaching, research and administration at coleges and universities. This CD includes resources to help start and maintain a GIS program. View this CD and see how GIS is used in higher education around… Read more.
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Interactive world atlas, easy-to-use, offers detailed maps as well as geographic, historic and scientific themes, maps can be customized.
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The largest source of international feature names available. GEONAME can replace over 200 printed US Government gazetteers - based on the database of the United States Board on Geographic Names. GEONAME is a powerful tool for geo-locating named… Read more.
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Lake Ontario is on charts 14800 and 14802
Lake Erie is chart 14820
Lake Superior is on charts 14961, 14964, 14966 and 14967
Lake Huron is chart 14860
Lake Michigan is on several charts
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The LandScan data set is a worldwide population databasecompiled on a 30in X 30in latitude/longitude grid. Census counts(mainly at sub-national level) were apportioned to each gridcell based on probability coefficients, which are based onproximity… Read more.
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In support of military applications, the National Imagery and Mapping Agency (NIMA) has developed standard digital datasets (Digital Terrain Elevation Data (DTED) which is a uniform matrix of terrain elevation values which provides basic… Read more.