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Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.
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Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.
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Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.
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Layers of geospatial data include roads, airports, trails, and railroads.
Tags: Accomack, Airport Complex, Airport Point, Airport Runway, Airports, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Accomack, Administrative watershed units, Administrative watershed units, Albemarle, Alexandria, All tags...
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These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...
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This dataset contains reflectance and transmission spectra of unexpanded and expanded vermiculite ore, and handpicked flakes of phlogopite, hydrobiotite, and vermiculite. These samples were collected from mines near Enoree, South Carolina; Libby, Montana; Louisa, Virginia; Palabora, Llano, Texas; and South Africa. Spectra are identified as either reflectance or transmission in the alphanumeric file names and correlate to specpr record numbers designated in the manuscript figures in which they are shown. These transmission spectra were converted to absorbance in many of the figures. Spectra of talc, fibrous richterite amphibole, and serpentine are from well characterized samples from Feiser Mine, Ruby Mountains,...


map background search result map search result map Spectra Used in Figures USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 07080101 (published 20231217) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 07080209 (published 20231217) Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 07080209 (published 20231217) FileGDB USGS 1:62500-scale Quadrangle for Louisa, WV 1913 USGS 1:24000-scale Quadrangle for Louisa, VA 1970 USGS 1:24000-scale Quadrangle for Louisa, VA 1970 USGS US Topo 7.5-minute map for Cotter, IA 2013 USGS US Topo 7.5-minute map for Letts, IA 2010 USGS US Topo 7.5-minute map for Morning Sun, IA 2013 USGS US Topo 7.5-minute map for Morning Sun, IA 2015 USGS US Topo 7.5-minute map for Oakville, IA 2015 USGS US Topo 7.5-minute map for Wapello, IA 2012 USGS US Topo 7.5-minute map for Joy, IL-IA 2015 USGS US Topo 7.5-minute map for Ferncliff, VA 2016 USGS US Topo 7.5-minute map for Lake Anna West, VA 2010 USGS US Topo 7.5-minute map for Orange, VA 2016 USGS National Hydrography Dataset Best Resolution (NHD) - Virginia (published 20231227) Shapefile USGS National Transportation Dataset (NTD) for Virginia (published 20240216) GeoPackage USGS NED 1/3 arc-second Contours for Washington W, Maryland 1 x 1 degree (published 20240112) GeoPackage USGS 1:24000-scale Quadrangle for Louisa, VA 1970 USGS 1:24000-scale Quadrangle for Louisa, VA 1970 USGS US Topo 7.5-minute map for Cotter, IA 2013 USGS US Topo 7.5-minute map for Letts, IA 2010 USGS US Topo 7.5-minute map for Morning Sun, IA 2013 USGS US Topo 7.5-minute map for Morning Sun, IA 2015 USGS US Topo 7.5-minute map for Oakville, IA 2015 USGS US Topo 7.5-minute map for Wapello, IA 2012 USGS US Topo 7.5-minute map for Joy, IL-IA 2015 USGS US Topo 7.5-minute map for Ferncliff, VA 2016 USGS US Topo 7.5-minute map for Lake Anna West, VA 2010 USGS US Topo 7.5-minute map for Orange, VA 2016 USGS 1:62500-scale Quadrangle for Louisa, WV 1913 USGS NED 1/3 arc-second Contours for Washington W, Maryland 1 x 1 degree (published 20240112) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 07080101 (published 20231217) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 07080209 (published 20231217) Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 07080209 (published 20231217) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) - Virginia (published 20231227) Shapefile USGS National Transportation Dataset (NTD) for Virginia (published 20240216) GeoPackage Spectra Used in Figures