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Geographic information systems (GIS)
Computer software that allows geospatially referenced data to be linked to geographic features. Use this term only for information that is about GIS and not for the use of GIS in applications and projects.
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Seamless geographic data distribution system [More info]
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).
PDF A New Method for Mapping Population Distribution [More info]
With the addition of elevation and land use and land cover data, we can show population density on a map much more effectively than if we simply color census areas. The resulting maps should allow better planning, especially in highly developed areas.
A program for the conversion of The National Map data from proprietary format to resource description framework (RDF) [More info]
To expand data functionality and capabilities for users of The National Map of the U.S. Geological Survey, data sets for six watersheds and three urban areas were converted from the Best Practices vector data model formats to Semantic Web data formats.
PDF Assessing effects of energy development in Colorado and New Mexico [More info]
Outlines information needed to enable effective local decision making regarding the installation, siting, and effects of energy resource facilities.
PDF Evolution of 3-D geologic framework modeling and its application to groundwater flow studies [More info]
Methods to depict the connectedness of rock units across fault and fracture zones, allowing us to determine the distribution of geologic units, structural features, and other controlling factors, such as porosity and permeability.
Mineral resources online spatial data [More info]
Website for geospatial data on mineral resources of the U.S. or the world that users can locate by geographic area, view, and download.
National Assessment of Coastal Change Hazards [More info]
The National Assessment of Coastal Change Hazards is a multi-year undertaking to identify and quantify the vulnerability of U.S. shorelines to coastal change hazards such as the effects of severe storms, sea-level rise, and shoreline erosion and retreat.
National Assessment of Shoreline Change Project [More info]
The Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) is conducting an analysis of historical shoreline changes along open-ocean sandy shores of the conterminous United States and parts of Alaska and Hawaii.
National Geospatial Program [More info]
Provides leadership for USGS geospatial coordination, production and service activities.
PDF National hydrography dataset--linear referencing [More info]
Explains how the NHD specifies point locations within streams by using a code to indicate the reach (including the hydrologic unit) and a measure, which indicates how far the point is from the downstream end of the reach.
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