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Seasonal streamflow enhanced unit runoff method estimates across the conterminous United States, 2000 through 2020 Seasonal streamflow enhanced unit runoff method estimates across the conterminous United States, 2000 through 2020
This data release contains seasonal streamflow estimates across the conterminous United States (2,691,587 NHDPlusV2 flowlines with defined from nodes) for 21 water years from November 1999 through December 2020. Streamflow was estimated using the Enhanced unit RunOff Method (EROM) following McKay and others (2012) with updated diversion representation and extended here to include...
Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay River Input Monitoring stations: Water years 1985-2025 Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay River Input Monitoring stations: Water years 1985-2025
Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed were calculated using monitoring data from the Chesapeake Bay River Input Monitoring (RIM) Network stations for the period 1985 through 2025. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression approach...
Flood frequency analysis using station skew for annual peak flows in parts of Colorado, based on data through water year 2022 Flood frequency analysis using station skew for annual peak flows in parts of Colorado, based on data through water year 2022
This dataset contains site information and flood-frequency analysis results using station skew for 253 streamgaging stations operated by the U.S. Geological Survey (USGS) across Colorado within the Rio Grande Basin and Missouri, Arkansas-White-Red, and Upper Colorado River Basins (2- digit hydrologic unit codes 13, 10, 11, and 14, respectively). Some streamgages included in this study...
Geologic Map Schema (GeMS) version of the State Geologic Map Compilation (SGMC) Geodatabase of the Conterminous United States Geologic Map Schema (GeMS) version of the State Geologic Map Compilation (SGMC) Geodatabase of the Conterminous United States
This data release provides a Geologic Map Schema (GeMS, USGS NCGMP, 2020) version of the State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (Horton and others, 2017). The SGMC provides spatial data for 48 state geologic maps that range from 1:50,000 to 1:1,000,000 scale. The GeMS version of the SGMC provides updated data for Arkansas, Mississippi...
Lake Ontario Spring (April) Prey Fish Bottom Trawl Survey, 1978-2025 Lake Ontario Spring (April) Prey Fish Bottom Trawl Survey, 1978-2025
This data release includes Lake Ontario fish data from the April or spring prey fish bottom trawl survey, conducted by multiple agencies from 1978 through 2025.This survey goal is to quantify the relative abundance and population dynamics of prey or forage fishes, and in particular Alewife (Alosa pseudoharengus), which inform fisheries managers that decide on Lake Ontario predator fish...
Caminada Headlands Back Barrier Marsh Creation Project (BA-0171) – 2024 detailed habitat classification Caminada Headlands Back Barrier Marsh Creation Project (BA-0171) – 2024 detailed habitat classification
The Caminada Headland Back Barrier Marsh Creation Project was developed under the Coastal Wetlands Planning, Protection, and Restoration Act (CWPPRA) to create and/or nourish approximately 900 acres of back barrier marsh behind nearly 8 miles of beach with dredged material from the Gulf of America. This restoration effort created a platform for the beach and dune to migrate, reducing the