Clearinghouse for the description and availability of multiple geospatial datasets relating to Alaska from many federal, state and local cooperating agencies under the coordination of the Alaska Geographic Data Committee.
Website with links to USGS hydrologic, geohydrologic, soil, and geologic projects in Missouri using geographic information systems (GIS) technology with digital datasets of images, models, and maps produced by the projects to view.
Access to downloadable GIS databases including the Global Digital Elevation Model (DEM), remotely sensed products, data on world energy and mineral deposits, biodiversity, and geologic hazards for use with ArcView or free software.
Chapter on geographic information systems from a Wildlife Society publication with detailed information on geographic information systems, data structure, image processing, data analysis, application to waterfowl management, and data sources.
Online map system providing downloadable geospatial data, primarily NSDI framework themes (that is, general geographic data such as transportation, boundaries, hydrography, orthoimagery, land cover, and elevation).
Modified version of paper by F.T. Manheim and A.G. McIntire, Civil Engineering Practice, Vol. 13, No. 1, pp. 35-48 (1998). A new shoreline file has been created for Boston Harbor by digitizing and combining the most recent charts.