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Bathymetric survey and stage-storage assessment of Quail Lake, Calif., collected in 2022 This bathymetric dataset provides an update to the stage-storage relation for Quail Lake (reservoir) located in the El Dorado National Forest, Calif. Bathymetric data was collected using a multibeam echo sounder to provide near-complete coverage and was merged with USGS 3DEP lidar to compute a DEM of the lake and near shore. The DEM was used to computed storage and surface area for a range of stage elevations. Results show that the spillway elevation was 6799.3 feet (NAVD88) and the crest elevation was 6802.5 feet (NAVD88). At the spillway elevation the storage was 141.74 ac-ft with a surface area of 14.20 ac. At the crest elevation the storage was 190.05 ac-ft with a surface area of 15.89 ac. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetric, California, Eldorado National Forest, Geomorphology, Hydrology, All tags... Quail Lake, Reservoir Sedimentation, Sedimentology, Stage-storage relation, USGS Science Data Catalog (SDC), elevation, Fewer tags Little Rock Reservoir, California, 2022 bathymetric survey and stage-storage computations This bathymetric dataset provides an update to the stage-storage relation for Little Rock Reservoir located in the Angeles National Forest, California. Bathymetric data was collected using a multibeam echo sounder to provide near-complete coverage and was merged with U.S. Geological Survey 3D Elevation Project lidar to compute a digital elevation model (DEM) of the reservoir and surrounding watershed. The DEM was used to computed storage and surface area for a range of stage elevations. Results show that the mean cross-spillway elevation was 3273 feet above the North American Vertical Datum 1988 (NAVD88) and the mean dam crest elevation was 3277 feet (NAVD88). At the spillway elevation the storage was 3335.8 acre-feet... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Angeles National Forest, California, Hydrology, Little Rock Reservoir, Sedimentology, All tags... USGS Science Data Catalog (SDC), Water Quality, bathymetric survey, elevation, inlandWaters, sedimentation, stage-storage, Fewer tags 1992 digital surface model and orthomosaic of Malakoff Diggins State Historic Park, California One of the largest hydraulic mines (1.6 km2) is located in California’s Sierra Nevada within the Humbug Creek watershed and Malakoff Diggins State Historic Park (MDSHP). MDSHP’s denuded and dissected landscape is composed of weathered Eocene auriferous sediments susceptible to chronic rill and gully erosion whereas block failures and debris flows occur in more cohesive terrain. This data release includes a 1992 digital surface model (DSM), 1992 orthophoto mosaic, masked orthophoto of the study area, 1992 ground cover classification, and 1992 pruned DSM with the vegetation bias removed. Stereo-photogrammetry was used to create a 1992 digital surface model (DSM) and orthophoto mosaic from archived 1992 aerial photographs.... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Raster; Tags: Geomorphology, Malakoff Diggins State Historic Park, Raster digital surface models, USGS Science Data Catalog (SDC), erosion, All tags... hydraulic mine, orthophoto, photogrammetry, Fewer tags Estimated equivalent population using public supply surface water in the conterminous United States, CEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the estimated population using public supply surface water distributed across block-groups. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, public supply, surface water Stage-Storage and Bed Material Data from the 2020 Upper Letts Lake Survey, California On October 13, 2020 a survey of Upper Letts Lake was conducted where both bathymetric and terrestrial lidar data were collected. Additionally, six bed material samples and three core samples were collected to understand the characterization of the grain-size of the lake bed. Survey data were merged with an additional lidar dataset from the USGS 3DEP program to create digital elevation model (DEM). The DEM was used to update the stage-storage and stage-surface area tables for the reservoir. This data release provides the following data sets; 1) bathymetric and terrestrial elevation data, 2) Combined bathymetric and 3DEP DEM, 3) stage-storage and stage-surface area tables from DEM, and 4) bed material grain-size and... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, Raster, Shapefile; Tags: Bathymetric Survey, California, Digital Elevation Model, Letts Lake, Mendocino National Forest, All tags... Stage-storage, USGS Science Data Catalog (SDC), Upper Letts Lake, Water Resources, elevation, topographic maps, Fewer tags Estimated equivalent population using public supply groundwater in the conterminous United States, CEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the estimated population using public supply groundwater distributed across census block-groups. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, groundwater, public supply Estimated equivalent population using public supply water in the conterminous United States, ULUEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the total estimated population using public supply surface water and groundwater combined, distributed using the urban land-use enhanced method. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, public supply, surface water Estimated equivalent population using public supply water in the conterminous United States, CEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the total estimated population using public supply surface water and groundwater combined, distributed across block-groups. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, public supply, surface water Estimated equivalent population using public supply surface water in the conterminous United States, ULUEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the estimated population using public supply surface water distributed using the urban land-use enhanced method. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, public supply, surface water Estimated equivalent population using public supply groundwater in the conterminous United States, ULUEM The population using public supply drinking water was mapped in two ways: the census enhanced method (CEM) evenly distributes the population across the census block-group, and the urban land-use enhanced method (ULUEM) distributes the population only to certain urban land use designations in order to more precisely locate public supply users. This dataset consists of the estimated population using public supply groundwater distributed using the urban land-use enhanced method. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: United States, drinking water, geoscientificInformation, groundwater, public supply