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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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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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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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The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" "Standard" (https://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level)...
Tags: 10-digit, 12-digit, 14-digit, 16-digit, 2-digit, All tags...
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The goal of this study was to develop a suite of inter-related water quality monitoring approaches capable of modeling and estimating the spatial and temporal gradients of particulate and dissolved total mercury (THg) concentration and particulate and dissolved methyl mercury (MeHg) concentration in surface waters across the Sacramento / San Joaquin River Delta (SSJRD). This suite of monitoring approaches included: a) data collection at fixed continuous monitoring stations (CMS) outfitted with in-situ sensors, b) spatial mapping using boat-mounted, flow-through, sensors and c) satellite-based remote sensing. The focus of this specific Child Page is to present all data collected during the underway boat mapping component...
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The Sacramento / San Joaquin River Delta (SSJRD) is contaminated with legacy mercury (Hg) from historical mining and mineral processing activities throughout the watershed, as well as from contemporary atmospheric and industrial inputs. The current project was designed for the purpose of developing high-resolution spatial and temporal models for estimating concentrations of mercury species in surface waters of the SSJRD. The field component of the project brings together three high-resolution platforms for collecting water-quality data (fixed continuous monitoring stations (CMS) outfitted with in-situ sensors, spatial mapping using boat-mounted flow-through sensors, and satellite-based remote sensing) coupled with...
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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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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, Alameda, Alpine, Amador, All tags...


map background search result map search result map USGS National Map Index Names (published 20240120) FileGDB USGS 1:31680-scale Quadrangle for Yolo, CA 1915 High resolution and discrete temporal and spatial water-quality measurements in support of modeling mercury and methylmercury concentrations in surface waters of the Sacramento-San Joaquin River Delta Flow through system (FTS) and spectral absorption / attenuation sensor (ACS) data from boat mapping transects within the Sacramento-San Joaquin River Delta USGS US Topo 7.5-minute map for Bird Valley, CA 2012 USGS US Topo 7.5-minute map for Grays Bend, CA 2012 USGS US Topo 7.5-minute map for Grays Bend, CA 2015 USGS US Topo 7.5-minute map for Kirkville, CA 2012 USGS US Topo 7.5-minute map for Knights Landing, CA 2012 USGS US Topo 7.5-minute map for Knoxville, CA 2012 USGS US Topo 7.5-minute map for Liberty Island, CA 2015 USGS US Topo 7.5-minute map for Madison, CA 2015 USGS US Topo 7.5-minute map for Monticello Dam, CA 2012 USGS US Topo 7.5-minute map for Verona, CA 2012 USGS US Topo 7.5-minute map for Wildwood School, CA 2012 USGS National Hydrography Dataset Best Resolution (NHD) - California (published 20231227) Shapefile USGS National Structures Dataset (NSD) California (published 20240215) GeoPackage USGS National Transportation Dataset (NTD) for California (published 20240215) GeoPackage USGS National Boundary Dataset (NBD) in California State or Territory (published 20240215) GeoPackage USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 18 (published 20231223) GeoPackage USGS 1:31680-scale Quadrangle for Yolo, CA 1915 USGS US Topo 7.5-minute map for Bird Valley, CA 2012 USGS US Topo 7.5-minute map for Grays Bend, CA 2012 USGS US Topo 7.5-minute map for Grays Bend, CA 2015 USGS US Topo 7.5-minute map for Kirkville, CA 2012 USGS US Topo 7.5-minute map for Knights Landing, CA 2012 USGS US Topo 7.5-minute map for Knoxville, CA 2012 USGS US Topo 7.5-minute map for Liberty Island, CA 2015 USGS US Topo 7.5-minute map for Madison, CA 2015 USGS US Topo 7.5-minute map for Monticello Dam, CA 2012 USGS US Topo 7.5-minute map for Verona, CA 2012 USGS US Topo 7.5-minute map for Wildwood School, CA 2012 High resolution and discrete temporal and spatial water-quality measurements in support of modeling mercury and methylmercury concentrations in surface waters of the Sacramento-San Joaquin River Delta Flow through system (FTS) and spectral absorption / attenuation sensor (ACS) data from boat mapping transects within the Sacramento-San Joaquin River Delta USGS National Map Index Names (published 20240120) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) - California (published 20231227) Shapefile USGS National Structures Dataset (NSD) California (published 20240215) GeoPackage USGS National Transportation Dataset (NTD) for California (published 20240215) GeoPackage USGS National Boundary Dataset (NBD) in California State or Territory (published 20240215) GeoPackage USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 18 (published 20231223) GeoPackage