Data

In cooperation with the Tennessee Department of Environment and Conservation (TDEC), the U.S. Geological Survey (USGS) measured cyanobacterial toxin concentrations (i.e., microcystin, anatoxin, cylindrospermopsin, and saxitoxin) and collected water-quality field data at 18 sites in North-central Tennessee from August 2022 to November 2024. Additionally, selected sites also were sampled...

In cooperation with the Tennessee Wildlife Resources Agency (TWRA) and University of Tennessee Knoxville (UTK), the U.S. Geological survey (USGS) collected cyanobacterial toxin concentrations (i.e., microcystin, anatoxin, cylindrospermopsin, and saxitoxin) and water-quality field data at 4 sites on the Clinch River from November 2020 to December 2023. The goal for the sample data was to...

The Chesapeake Bay Hyper-Resolution Hydrography Database is intended to facilitate analysis of the landscape in the Chesapeake Bay watershed through identification of headwater and other low-order streams or drainage features (e.g. ditches) that, to date, may be absent from existing hydrography data products. A full description of the methodology and accuracy assessment is provided in...

This data release provides comprehensive results of monotonic trend assessment for long-term U.S. Geological Survey (USGS) streamgages in or proximal to the watersheds of Mobile and Perdido Bays, south-central United States (Tatum and others, 2024). Long-term is defined as streamgages having at least five complete decades of daily streamflow data since January 1, 1950, exclusive to those...

To improve estimates of the frequency of annual peak flows for ungaged locations on non-urban, unregulated streams in Tennessee, generalized least-squares (GLS) multiple linear-regression techniques were used to relate annual peak flows from streamflow gaging stations (streamgages) operated by the U.S. Geological Survey (USGS) to physical, climatic, and land-use characteristics of their...

This data release presents streamflow recession analyses and supporting statistics for 164 U.S. Geological Survey (USGS) streamgages located in or near the watersheds of Mobile and Perdido Bays in the south-central United States (see Tatum and others, 2024). Streamgages were selected based on a minimum of two complete decades of daily streamflow data since January 1, 1950, with the...

This data release contains in situ winter cover crop biomass sampling data collected from fields located on the Delmarva Peninsula (Talbot, Queen Anne’s and Caroline County, Maryland, USA) and at the USDA-ARS Beltsville Agricultural Research Center (BARC), Beltsville, Maryland, USA. Samples were collected during the winter cover crop growing season, between November and April, from 2019...

The U.S. Geological Survey (USGS), in cooperation with the Louisiana Department of Transportation, prepared hydrologically-conditioned geographic information systems (GIS) layers for use in the Louisiana StreamStats application. This data release contains vector and raster geospatial data used to delineate drainage basins and raster geospatial data for precipitation data used to...

These data were collected as part of a cooperative study with the U.S. Army Corps of Engineers investigating deposition patterns within Raccourci Lake and Island, Louisiana. Samples of sediment were collected from four cores taken to a depth of 30-40 feet on Raccourci Island using a geotechnical drill rig with resistivity analysis capabilities. Subsamples of the core were analyzed for...

This data release supports the publication in the Soil and Tillage Research journal titled "Multiyear Crop Residue Cover Mapping Using Narrow-Band vs. Broad-Band Shortwave Infrared Satellite Imagery" by Lamb and others (2025) (https://doi.org/10.1016/j.still.2025.106524) The dataset includes field sampling data comprising in-field nadir photographs collected from a collaborating farm in...

This dataset contains site information and results of flood frequency analysis for 64 urban streamflow gaging stations (streamgages) operated by the U.S. Geological Survey (USGS) in Alabama and Mississippi. Site information and annual peak-flow data from the 1885 - 2024 water years were obtained from the USGS National Water Information System (NWIS) database (U.S. Geological Survey, 2025...

Since 1975, annual water use for Louisiana has been published on a 5-year basis and is used for a variety of purposes. As the Sparta aquifer is a heavily used aquifer, is the sole source of groundwater for many parishes in Louisiana, and recent withdrawals have exceeded the Sparta’s natural recharge, a more frequent compilation of water usage for the Sparta aquifer in Louisiana is needed...