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Filters Date Range Past year (1) Past month (1) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (1) Types Downloadable (1) Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Shapefile (1) Contacts Carl J Legleiter Natalie C Hall U.S. Geological Survey U.S. Geological Survey - ScienceBase Water Resources More... Categories Data (2) Tag Types Place (8) Tags (with Scheme=Common geographic areas) blue river (1) california (1) clackamas (1) cougar reservoir (1) crane prairie reservoir (1) mc kenzie river (1) upper klamath lake (1) More... View Results as: JSON ATOM CSV

Sediment grain size measurements from the upper Merced and Tuolumne Rivers in California Field measurements of riverbed grain size were collected from the Merced and Tuolumne Rivers in California to support research on anadromous salmonids. The grain size estimates included in this dataset were obtained from plan-view digital images of grains on exposed gravel and cobble bars (n = 109 for the Merced, n = 26 for the Tuolumne). The images were used to estimate grain-size distributions using the algorithm of Buscombe (2013). In this dataset we report the median grain size (D50), the 16th percentile (D16) and 84th percentile (D84). The spatial location of each measurement was obtained via a Trimble R10 RTK GPS receiver. The map projection and datum for these data from the Merced River are UTM Zone 11 N... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: California, California, Merced River, Steelhead, Tuolumne River, All tags... salmonid, sediment grain size, spawning habitat, spring-run Chinook Salmon, Fewer tags Hyperspectral profiles of Harmful Algal Blooms (HABs) and other algae, 2022 This dataset is a collection of hyperspectral imagery profiles of algae, many associated with Harmful Algae Blooms (HABs). Data were collected using a microscope-based hyperspectral imaging system with the cooperation of the National Institute of Standards and Technology. Samples were collected from U.S. Geological Survey (USGS) water quality sampling efforts, to include water quality parameters and algal biomass. Data are shown in basic hyperspectral imagery form, normalized to 1. Categories: Data; Tags: Blue Mesa Reservoir, CO, Blue River, Clackamas, Cougar Reservoir, Crane Prairie Reservoir, All tags... Cyanobacteria, Harmful Algal Blooms, Hyperspectral remote sensing, Imaging spectroscopy, Kearneysville, WV, Long Lake, IL, Mc Kenzie River, USGS Science Data Catalog (SDC), Upper Klamath Lake, Woodstown, algae, biota, cyanobacteria ["blue-green algae"], green algae, inlandWaters, Fewer tags