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Filters Date Range Past year (3) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (1) Types Map Service (4) OGC WFS Layer (4) OGC WMS Layer (4) Citation (3) OGC WMS Service (3) Downloadable (1) Shapefile (1) Contacts Victor L Roland U.S. Geological Survey U.S. Geological Survey - ScienceBase Michael E Wieczorek Water Resources More... Tag Types Theme (13) Place (12) USGS Scientific Topic Keyword (6) Harvest Set (6) Tag Schemes None (5) USGS Thesaurus (7) Common Geographic Areas (1) Common geographical names (4) ISO 19115 Topic Category (3) none (1) View Results as: JSON ATOM CSV

Dataset of water boundaries intersected with MRB_RF1 reach flowlines This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total phosphorus and total nitrogen in Tennessee streams. These data support the publication containing the Tennessee SPARROW models results (Hoos and others, 2019) and include model input used in the South Atlantic-Gulf Drainages and Tennessee River Basin (SAGT) nutrient SPARROW models (Hoos and McMahon, 2009; Garcia and others, 2011) as well as model input for river basins in Tennessee not included in the domain of the published SAGT SPARROW models. Also included in this data release are model coefficients, the software required to execute the Tennessee SPARROW... Categories: Data; Tags: SPARROW, Tennessee, nitrogen, nutrients, phosphorus, All tags... surface-water quality, Fewer tags Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Crop Land Data Layer 2014 This tabular data set represents the percent of land cover classes from the 2014 Crop land Data Layer compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the "2014 Crop Land Data Layer" produced by the United States Department of Agriculture (USDA) National Agricultural Statistics Service (NASS, 2015). Reach catchment information characterizes data at the local scale. Reach catchments accumulated upstream through the river network characterizes... Categories: Data; Types: Citation; Tags: CDL, Catchment, Conterminous United States, Crop Land Data Layer, CropScape, All tags... Inlandwaters, NAWQA, NHDPlus, SPARROW, agriculture, crop cover, crop estimates, cropland, land cover, Fewer tags Upper Colorado River Basin SPARROW model catchments and synthetic stream network - 2017 This data collection consists of a synthetic stream network and associated catchments developed as the foundation for a Spatially Referenced Regressions on Watershed Attributes (SPARROW) dissolved-solids source and transport model for the Upper Colorado River Basin (UCRB). The SPARROW model requires a hydrologically connected representation of a stream network through which loads are transported from an upstream reach to the next reach downstream (Schwarz and others, 2006; Moore and others, 2004). Each stream reach or segment within this synthetic stream network has an associated local drainage area or catchment used to calculate catchment characteristics that may have an effect on loads being modeled. The synthetic... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, Catchment, Colorado, Dissolved-solids model, Hydrologic network, All tags... New Mexico, SPARROW, Upper Colorado River Basin, Utah, Watershed, Wyoming, geoscientificInformation, inlandWaters, Fewer tags Names of 10-digit hydrologic unit code (HUC10) watersheds in the state of Tennessee This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total phosphorus and total nitrogen in Tennessee streams. These data support the publication containing the Tennessee SPARROW models results (Hoos and others, 2019) and include model input used in the South Atlantic-Gulf Drainages and Tennessee River Basin (SAGT) nutrient SPARROW models (Hoos and McMahon, 2009; Garcia and others, 2011) as well as model input for river basins in Tennessee not included in the domain of the published SAGT SPARROW models. Also included in this data release are model coefficients, the software required to execute the Tennessee SPARROW... Categories: Data; Tags: SPARROW, Tennessee, nitrogen, nutrients, phosphorus, All tags... surface-water quality, Fewer tags Wet atmospheric nitrogen deposition data detrended to 2002 This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total phosphorus and total nitrogen in Tennessee streams. These data support the publication containing the Tennessee SPARROW models results (Hoos and others, 2019) and include model input used in the South Atlantic-Gulf Drainages and Tennessee River Basin (SAGT) nutrient SPARROW models (Hoos and McMahon, 2009; Garcia and others, 2011) as well as model input for river basins in Tennessee not included in the domain of the published SAGT SPARROW models. Also included in this data release are model coefficients, the software required to execute the Tennessee SPARROW... Categories: Data; Tags: SPARROW, Tennessee, nitrogen, nutrients, phosphorus, All tags... surface-water quality, Fewer tags Regression tree datasets used to identify trophic states in Tennessee reservoirs This dataset was developed in partnership with the Tennessee Department of Environmental Conservation to determine the susceptibility of selected Tennessee reservoirs to eutrophication and potential harmful algal blooms. A R script, based on recursive partitioning and the model-based boosting routine, was used to generate regression trees that grouped Tennessee reservoirs into five endpoints along individual low-to-high gradients of Secchi depth and chlorophyll a concentrations (Green, et al, 2021; Heal and Green, 2021). Input data for these reservoirs were obtained from SPAtially Referenced Regression On Watershed (SPARROW) attributes models that estimate total phosphorus and total nitrogen loads in Tennessee water... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geomorphology, Lakes/Reservoirs, SPARROW, USGS Science Data Catalog (SDC), Water Quality, All tags... Water Resources, agal blooms, eutrophication, nitrogen eutrophication, nutrient content, nutrient loading, Fewer tags Point-source contributions of total nitrogen and total phosphorus from facilities This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total phosphorus and total nitrogen in Tennessee streams. These data support the publication containing the Tennessee SPARROW models results (Hoos and others, 2019) and include model input used in the South Atlantic-Gulf Drainages and Tennessee River Basin (SAGT) nutrient SPARROW models (Hoos and McMahon, 2009; Garcia and others, 2011) as well as model input for river basins in Tennessee not included in the domain of the published SAGT SPARROW models. Also included in this data release are model coefficients, the software required to execute the Tennessee SPARROW... Categories: Data; Tags: SPARROW, Tennessee, nitrogen, nutrients, phosphorus, All tags... surface-water quality, Fewer tags E2NHDPlusV2_us: Database of Ancillary Hydrologic Attributes and Modified Routing for NHDPlus Version 2.1 Flowlines The National Hydrography Dataset Plus, Version 2 (NHDPlusV2) is an attribute rich, digital hydrologic network for the Conterminous U.S. developed by the U.S. Environmental Protection Agency (EPA) and U.S. Geological Survey (USGS). SPAtially Referenced Regressions On Watershed attributes (SPARROW), is a process-based/statistical model that relies on a digital hydrologic network, like NHDPlusV2, in order to establish spatial relations between monitored contaminant loads, contaminant sources, and other watershed characteristics. The USGS National Water Quality Assessment (NAWQA) project adopted the medium-resolution NHDPlusV2 network as the primary framework supporting SPARROW modeling, and has become a unifying system... Categories: Data; Tags: Conterminous United States, Hydrology, NHDPlus, SPARROW, USGS Science Data Catalog (SDC), All tags... Water Quality, Water Resources, biota, hydrography, hydrologic network, routing, Fewer tags This dataset includes HUC8 and HUC10 codes associated with MRB reach IDs used in the Tennessee SPARROW model This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total phosphorus and total nitrogen in Tennessee streams. These data support the publication containing the Tennessee SPARROW models results (Hoos and others, 2019) and include model input used in the South Atlantic-Gulf Drainages and Tennessee River Basin (SAGT) nutrient SPARROW models (Hoos and McMahon, 2009; Garcia and others, 2011) as well as model input for river basins in Tennessee not included in the domain of the published SAGT SPARROW models. Also included in this data release are model coefficients, the software required to execute the Tennessee SPARROW... Categories: Data; Tags: SPARROW, Tennessee, nitrogen, nutrients, phosphorus, All tags... surface-water quality, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Riparian National Land Cover Data for 2019 Versions for the Years 2001, 2004, 2006, 2008, 2011, 2013, 2016, and 2019 This tabular data set represents the percent of land cover classes in the riparian zone from the 2019 edition of the National Land Cover databases for the years 2001, 2004, 2006, 2008, 2011, 2013, 2016 and 2019 compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. These databases can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the "National Land Cover Database (NLCD) 2019 Products (ver. 2.0, June 2021)" databases for the years 2001, 2004, 2006, 2008, 2011, 2013, 2016, and 2019 produced by the... Categories: Data; Tags: Aquatic Biology, Catchment, Conterminous United States, Ecology, Geography, All tags... Hydrology, Inlandwaters, Land Use Change, NAWQA, NHDPlus, NLCD2001, NLCD2004, NLCD2006, NLCD2008, NLCD2011, NLCD2013, NLCD2016, NLCD2019, National Land Cover Data set, SPARROW, USGS Science Data Catalog (SDC), Water Quality, Water Resources, Wildlife Biology, inlandWaters, land cover, land use, riparian area, Fewer tags Nutrient loading, flushing rate, and lake morphometry data used to identify trophic states in selected watersheds of the eastern and southeastern United States For State agencies and other water-resources managers, determining which waterbodies to allocate limited funds for protection and restoration while also maximizing cost benefit is challenging. This data release contains trophic state designations determined from secchi depth, and concentrations of chlorophyll a and microcystin at 232 lakes and reservoirs having a surface area of greater than 0.1 square kilometer in watersheds that drain to the Atlantic and eastern Gulf of Mexico coasts of the United States and in watersheds within the Tennessee River Basin. Estimates of nutrient loading (nitrogen and phosphorus, Hoos and others, 2013; Moorman and others, 2014) and flushing rates were combined with waterbody morphometry... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, Connecticut, Florida, Georgia, Hydrology, All tags... Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Northeast, Pennsylvania, Phosphorus Loads, Rhode Island, SPARROW, SPAtially Referenced Regressions On Watershed attributes (SPARROW), South Carolina, Southeast, USGS Science Data Catalog (SDC), Vermont, Virginia, Water Quality, Water Resources, West Virginia, algae, blue-green algae, cyanobacteria, eutrophication, harmful algal blooms, microcystin, morphometry, nitrogen eutrophication, nutrient loading, phosphorous, total nitrogen, Fewer tags Model code, input datasets, and prediction files for dynamic stream dissolved solids and static baseflow dissolved solids SPARROW models of the Upper Colorado River Basin, 1986-2017 This data release contains model code and input data for, and predictions from, both a dynamic stream dissolved solids and a static baseflow dissolved solids SPARROW (SPAtially Referenced Regression On Watershed attributes) model of the Upper Colorado River Basin for water years 1986-2017. Input data includes information on dissolved solids sources, landscape transport characteristics, and dissolved solids load calibration data from water quality monitoring stations. Model output includes predictions for every reach of total and incremental predicted loads and total and incremental loads from each source. Further details on model development and results are described in Miller and others, 2023. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arizona, Colorado, New Mexico, SPARROW, USGS Science Data Catalog (SDC), All tags... Upper Colorado, Utah, Wyoming, baseflow, climate, dissolved solids, irrigated lands, none, salinity, streamflow, water quality, Fewer tags Bootstrap-Estimated Land-to-Water Coefficients from the CBTN_v4 SPARROW Model This file contains 200 sets of bootstrap-estimated land-to-water coefficients from the CBTN_v4 SPARROW model, which is documented in USGS Scientific Investigations Report 2011-5167. The coefficients were produced as part of CBTN_v4 model calibration to provide information about the uncertainty in model estimates. Categories: Data; Types: Citation; Tags: Chesapeake Bay Watershed, SPARROW, USGS Science Data Catalog (SDC), Water Resources, fate and transport, All tags... nitrogen, Fewer tags