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1/9th Arc-second Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection This is a tiled collection of the 3D Elevation Program (3DEP) and is 1/9 arc-second (approximately 3 m) resolution.The 3DEP data holdings serve as the elevation layer of The National Map, and provide foundational elevation information for earth science studies and mapping applications in the United States. Scientists and resource managers use 3DEP data for hydrologic modeling, resource monitoring, mapping and visualization, and many other applications. The elevations in this DEM represent the topographic bare-earth surface. The seamless 1/9 arc-second DEM layers are derived from diverse source data that are processed to a common coordinate system and unit of vertical measure. These data are distributed in geographic... Types: Citation; Tags: 1/9 arc-second DEM, 15-minute DEM, 3DEP, Bare Earth, Cartography, All tags... DEM, Digital Elevation Model, Digital Mapping, Digital Terrain Model, Elevation, Elevation Theme, GIS, Geodata, Grid, High Resolution, Hydro-Flattened, IFSAR, Interferometric Synthetic Aperture Radar, LIDAR, LIght Detection And Ranging, Mapping, NED, NGDA, National Elevation Dataset, National Geospatial Data Asset, Raster, Terrain Elevation, Topographic Surface, Topography, U.S. Geological Survey, US, USGS, United States, elevation, Fewer tags Parking Areas, Tule Lake NWR U.S. Fish and Wildlife Service Road Inventory Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bridge, CRV, Condition, Culvert, GIS, All tags... GPS, Gate, Guardrail, Low Water Crossing, National Fish Hatchery, National Wildlife Refuge, Parking Lot, Regions, Roads, Surface Type, Transportation, U.S. Fish and Wildlife Service, Water Control Structure, Wetland Management District, Fewer tags USGS NED Orthorectified Radar Intensity Image AK Ifsar-Kenai-L1-c270 2015 TIFF 2017 These data are orthorectified radar intensity images (ORI) derived from interferometric synthetic aperture radar (ifsar) data. An ORI is a high-resolution image derived from ifsar which has geometric distortions removed. Unlike optical imagery, ifsar can be collected in cloudy conditions. The USGS performs minimal quality assurance and no reprocessing of the ORI data. USGS distributes the ORI data as received from the contractors, partners or contributing entities. Types: Citation; Tags: Cartography, Digital Mapping, Downloadable Data, Elevation, Elevation, All tags... GIS, Geodata, High Resolution, IFSAR, Ifsar Orthorectified Radar Image (ORI), Image, Imagery, Imagery, Interferometric Synthetic Aperture Radar, Mapping, ORI, Orthorectified radar intensity imagery, Raster, TIFF, U.S. Geological Survey, US, USGS, United States, Varies, imageryBaseMapsEarthCover, Fewer tags USGS NED Digital Surface Model AK Kenai-L2-c280 2014 TIFF 2017 These data are Digital Surface Models (DSM) derived from interferometric synthetic aperture radar (ifsar) data. A DSM is a 3 dimensional representation of surface elevations in an area, including elevations of man-made structures and vegetation. The USGS performs minimal quality assurance and no reprocessing of the DSM data. USGS distributes the DSM data as received from the contractors, partners or contributing entities. Types: Citation; Tags: Cartography, DSM, Digital Mapping, Digital Surface Model, Digital Terrain Model, All tags... Downloadable Data, Elevation, Elevation, Elevation, First Return Surface, GIS, Geodata, High Resolution, Hydro-Flattened, IFSAR, Ifsar Digital Surface Model (DSM), Interferometric Synthetic Aperture Radar, Mapping, Raster, TIFF, Terrain Elevation, Topography, U.S. Geological Survey, US, USGS, United States, Varies, elevation, Fewer tags USGS NED Orthorectified Radar Intensity Image AK IFSAR-Chugach-c282 2016 TIFF 2017 These data are orthorectified radar intensity images (ORI) derived from interferometric synthetic aperture radar (ifsar) data. An ORI is a high-resolution image derived from ifsar which has geometric distortions removed. Unlike optical imagery, ifsar can be collected in cloudy conditions. The USGS performs minimal quality assurance and no reprocessing of the ORI data. USGS distributes the ORI data as received from the contractors, partners or contributing entities. Types: Citation; Tags: Cartography, Digital Mapping, Downloadable Data, Elevation, Elevation, All tags... GIS, Geodata, High Resolution, IFSAR, Ifsar Orthorectified Radar Image (ORI), Image, Imagery, Imagery, Interferometric Synthetic Aperture Radar, Mapping, ORI, Orthorectified radar intensity imagery, Raster, TIFF, U.S. Geological Survey, US, USGS, United States, Varies, imageryBaseMapsEarthCover, Fewer tags USGS NED Orthorectified Radar Intensity Image AK Kenai-L2-c307 2014 TIFF 2017 These data are orthorectified radar intensity images (ORI) derived from interferometric synthetic aperture radar (ifsar) data. An ORI is a high-resolution image derived from ifsar which has geometric distortions removed. Unlike optical imagery, ifsar can be collected in cloudy conditions. The USGS performs minimal quality assurance and no reprocessing of the ORI data. USGS distributes the ORI data as received from the contractors, partners or contributing entities. Types: Citation; Tags: Cartography, Digital Mapping, Downloadable Data, Elevation, Elevation, All tags... GIS, Geodata, High Resolution, IFSAR, Ifsar Orthorectified Radar Image (ORI), Image, Imagery, Imagery, Interferometric Synthetic Aperture Radar, Mapping, ORI, Orthorectified radar intensity imagery, Raster, TIFF, U.S. Geological Survey, US, USGS, United States, Varies, imageryBaseMapsEarthCover, Fewer tags Statistical modeling of agricultural chemical occurrence in midwestern rivers Categories: Publication; Types: Citation; Tags: GIS, SW 3020 Sources and fate of pollution; SW 5080 Evaluation, p, USA, USA, Midwest, USGS, All tags... Water Resources Abstracts; ASFA 3: Aquatic Pollution & Envir, agricultural chemicals, agricultural pollution, agricultural runoff, agrochemicals, data interpretation, fate, geographic information systems, geographical information systems, geological surveys, mass transfer, pollution dispersion, regional analysis, regression analysis, statistical models, stream pollution, water pollution, Fewer tags Spatial study of the relationships between streamwater acidity and geology, soils and relief (Vosges, northeastern France) Categories: Publication; Types: Citation; Tags: Acidity, Alkalinity, Base Flow, Bedrock, Catchment Areas, All tags... Catchment area, Forest Watersheds, France, France, GIS, Geochemistry, Geographical Information Systems, Geology, Hydrogen Ion Concentration, Mineralogy, Rivers, SW 0880 Chemical processes, Streams, Water Resources Abstracts, base flow, pH, Fewer tags Impact evaluation of agrotechnologies in watersheds Categories: Publication; Types: Citation; Tags: Agricultural Practices, Agricultural pollution, Environmental Effects, GIS, Groundwater Pollution, All tags... Hogs, Information Systems, Italy, Po R., Italy, Tiber R., Land Use, Mapping, Nitrogen, Remote Sensing, Rice, Risk, SW 2080 Watershed protection; SW 3030 Effects of pollution; , Water Resources Abstracts; Pollution Abstracts, Fewer tags Northern Ocean Inventories of Organochlorine and Heavy Metal Contamination Categories: Publication; Types: Citation; Tags: Arctic, Arctic, Arctic zone, Chemical pollutants, Chlorinated hydrocarbons, All tags... Chlorinated organic compounds, Cold regions, Contamination, GIS, Geographic information systems, Geographical Information Systems, Heavy metals, Historical account, Information systems, Long-term records, Marine Environment, Marine environment (see also Sea water), Marine pollution, Organochlorine compounds, P 1000 MARINE POLLUTION; O 4060 Pollution - Environment; Q5 , Polar environments, Pollutant Identification, Pollution (Water), Pollution Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Poll, Pollution effects, Pollution monitoring, Russia, Sediment pollution, Water Pollution, Fewer tags Geohydrology of parts of Muhlenberg, Ohio, Butler, Mclean, Todd, and Logan counties, Kentucky Categories: Publication; Types: Citation; Tags: GIS, SW 0840 Groundwater, USA, Kentucky, Water Resources Abstracts, aquifer characteristics, All tags... geohydrology, geology, groundwater movement, test wells, water level, water quality, water use, well capacity, Fewer tags Dam safety: A GIS approach to management Categories: Publication; Types: Citation; Tags: Canada, Ontario, GIS, SW 4010 Techniques of planning; SW 6010 Structures; H SI1.11, Water Resources Abstracts; Health & Safety Science Abstracts, computer programs, All tags... dams, data processing, decision making, geographic information systems, information systems, maintenance, management planning, safety, Fewer tags Role of wetlands in reducing phosphorus loading to surface water in eight watersheds in the Lake Champlain Basin Categories: Publication; Types: Citation; Tags: GIS, North America, Champlain Lake Basin, SW 3070 Water quality control; Q5 01522 Protective measures , USA, Champlain L. Basin, USA, Champlain L. Basin, All tags... USA, Vermont, Champlain L., USA, Vermont, Champlain L., USA, Vermont, Champlain Lake Basin, Water Resources Abstracts; ASFA 3: Aquatic Pollution & Envir, environmental protection, eutrophication, geographic information systems, lake basins, phosphorus, pollution control, pollution load, protection, regression analysis, surface water, water quality control, watersheds, wetlands, Fewer tags Estimation of surface water quality changes in response to land use change: Application of the export coefficient model using remote sensing and geographical information system Categories: Publication; Types: Citation; Tags: GIS, SW 3020 Sources and fate of pollution; SW 5040 Data acquisit, Water Resources Abstracts; Pollution Abstracts, fertilizers, geographic information systems, All tags... land use, nonpoint pollution, nonpoint pollution sources, nutrient loading, remote sensing, solutes, surface water, water quality, watersheds, Fewer tags USGS NED Digital Surface Model AK Ifsar-Kenai-L1-c298 2015 TIFF 2017 These data are Digital Surface Models (DSM) derived from interferometric synthetic aperture radar (ifsar) data. A DSM is a 3 dimensional representation of surface elevations in an area, including elevations of man-made structures and vegetation. The USGS performs minimal quality assurance and no reprocessing of the DSM data. USGS distributes the DSM data as received from the contractors, partners or contributing entities. Types: Citation; Tags: Cartography, DSM, Digital Mapping, Digital Surface Model, Digital Terrain Model, All tags... Downloadable Data, Elevation, Elevation, Elevation, First Return Surface, GIS, Geodata, High Resolution, Hydro-Flattened, IFSAR, Ifsar Digital Surface Model (DSM), Interferometric Synthetic Aperture Radar, Mapping, Raster, TIFF, Terrain Elevation, Topography, U.S. Geological Survey, US, USGS, United States, Varies, elevation, Fewer tags USGS Lidar Point Cloud IN Eastern Tier Bl 6 in2012 04901935 12 LAS 2017 Lidar (Light detection and ranging) discrete-return point cloud data are available in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS format. The LAS format is a standardized binary format for storing 3-dimensional point cloud data and point attributes along with header information and variable length records specific to the data. Millions of data points are stored as a 3-dimensional data cloud as a series of x (longitude), y (latitude) and z (elevation) points. A few older projects in this collection are in ASCII format. Please refer to http://www.asprs.org/Committee-General/LASer-LAS-File-Format-Exchange-Activities.html for additional information. Types: Citation; Tags: Cartography, DEM, Digital Elevation Model, Digital Mapping, Digital Terrain Model, All tags... Downloadable Data, Elevation, Elevation, Elevation, GIS, Geodata, High Resolution, LAS, LAZ, LIDAR, LIght Detection And Ranging, Lidar Point Cloud (LPC), Mapping, NED, National Elevation Dataset, Terrain Elevation, Topographic Surface, Topography, U.S. Geological Survey, US, US, USGS, United States, Varies, elevation, Fewer tags USGS NED Orthorectified Radar Intensity Image AK IFSAR-Sum-L1-C186 2015 TIFF 2017 These data are orthorectified radar intensity images (ORI) derived from interferometric synthetic aperture radar (ifsar) data. An ORI is a high-resolution image derived from ifsar which has geometric distortions removed. Unlike optical imagery, ifsar can be collected in cloudy conditions. The USGS performs minimal quality assurance and no reprocessing of the ORI data. USGS distributes the ORI data as received from the contractors, partners or contributing entities. Types: Citation; Tags: Cartography, Digital Mapping, Downloadable Data, Elevation, Elevation, All tags... GIS, Geodata, High Resolution, IFSAR, Ifsar Orthorectified Radar Image (ORI), Image, Imagery, Imagery, Interferometric Synthetic Aperture Radar, Mapping, ORI, Orthorectified radar intensity imagery, Raster, TIFF, U.S. Geological Survey, US, USGS, United States, Varies, imageryBaseMapsEarthCover, Fewer tags USGS Lidar Point Cloud (LPC) IL_HenryCo_2009_001802 2014-09-06 LAS Lidar (Light detection and ranging) discrete-return point cloud data are available in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS format. The LAS format is a standardized binary format for storing 3-dimensional point cloud data and point attributes along with header information and variable length records specific to the data. Millions of data points are stored as a 3-dimensional data cloud as a series of x (longitude), y (latitude) and z (elevation) points. A few older projects in this collection are in ASCII format. Please refer to http://www.asprs.org/Committee-General/LASer-LAS-File-Format-Exchange-Activities.html for additional information. Types: Citation; Tags: Cartography, DEM, Digital Elevation Model, Digital Mapping, Digital Terrain Model, All tags... Downloadable Data, Elevation, Elevation, Elevation, GIS, Geodata, High Resolution, LAS, LAZ, LIDAR, LIght Detection And Ranging, Lidar Point Cloud (LPC), Mapping, NED, National Elevation Dataset, Terrain Elevation, Topographic Surface, Topography, U.S. Geological Survey, US, US, USGS, United States, Varies, elevation, Fewer tags USGS Lidar Point Cloud (LPC) IL_HenryCo_2009_001805 2014-09-06 LAS Lidar (Light detection and ranging) discrete-return point cloud data are available in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS format. The LAS format is a standardized binary format for storing 3-dimensional point cloud data and point attributes along with header information and variable length records specific to the data. Millions of data points are stored as a 3-dimensional data cloud as a series of x (longitude), y (latitude) and z (elevation) points. A few older projects in this collection are in ASCII format. Please refer to http://www.asprs.org/Committee-General/LASer-LAS-File-Format-Exchange-Activities.html for additional information. Types: Citation; Tags: Cartography, DEM, Digital Elevation Model, Digital Mapping, Digital Terrain Model, All tags... Downloadable Data, Elevation, Elevation, Elevation, GIS, Geodata, High Resolution, LAS, LAZ, LIDAR, LIght Detection And Ranging, Lidar Point Cloud (LPC), Mapping, NED, National Elevation Dataset, Terrain Elevation, Topographic Surface, Topography, U.S. Geological Survey, US, US, USGS, United States, Varies, elevation, Fewer tags USGS Lidar Point Cloud (LPC) IL_HenryCo_2009_001813 2014-09-06 LAS Lidar (Light detection and ranging) discrete-return point cloud data are available in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS format. The LAS format is a standardized binary format for storing 3-dimensional point cloud data and point attributes along with header information and variable length records specific to the data. Millions of data points are stored as a 3-dimensional data cloud as a series of x (longitude), y (latitude) and z (elevation) points. A few older projects in this collection are in ASCII format. Please refer to http://www.asprs.org/Committee-General/LASer-LAS-File-Format-Exchange-Activities.html for additional information. Types: Citation; Tags: Cartography, DEM, Digital Elevation Model, Digital Mapping, Digital Terrain Model, All tags... Downloadable Data, Elevation, Elevation, Elevation, GIS, Geodata, High Resolution, LAS, LAZ, LIDAR, LIght Detection And Ranging, Lidar Point Cloud (LPC), Mapping, NED, National Elevation Dataset, Terrain Elevation, Topographic Surface, Topography, U.S. Geological Survey, US, US, USGS, United States, Varies, elevation, Fewer tags 1 2 3 4 5 ... »