714 datasets found
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Federal
National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection NGDA
Department of the Interior —
The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's... -
Federal
ATTAINS Assessments
U.S. Environmental Protection Agency —
State water quality assessment decisions reported to EPA under the Integrated Report (IR), and Clean Water Act Sections 303(d) and 305(b). This service provides... -
Federal
Elevation of marsh units in Massachusetts salt marshes
Department of the Interior —
This data release contains coastal wetland synthesis products for Massachusetts, developed in collaboration with the Massachusetts Office of Coastal Zone Management.... -
Federal
National Hydrography Dataset Plus High Resolution (NHDPlus HR) - USGS National Map Downloadable Data Collection
Department of the Interior —
The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated datset of geospatial data layers, including the most current National Hydrography... -
Federal
EnviroAtlas -- Cyanobacteria Index for the Continental United States
U.S. Environmental Protection Agency —
This dataset shows the temporal frequency and spatial extent of cyanobacteria cells in large, freshwater lakes and reservoirs across the continental United States... -
Federal
EnviroAtlas National Layers Master Web Service
U.S. Environmental Protection Agency —
This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This web service includes... -
Federal
US estuaries
U.S. Environmental Protection Agency —
GIS Shapefile with distance to shore and window width calculated for each US estuary and subestuary. This dataset is associated with the following publication:... -
Federal
Pharmaceuticals in the Environment, Information for Assessing Risk (PEiAR)
National Oceanic and Atmospheric Administration, Department of Commerce —
The database provides information on prescribed amounts, levels detected in aquatic environments, chemical structure, molecular weight, octanol-water partition... -
Federal
Continuous Water Quality Monitoring Dataset from Tillamook Bay, OR; 2017-2023
U.S. Environmental Protection Agency —
Tillamook Estuary, OR continuous water quality monitoring dataset: 2017-2023 -
State
NYSDEC_WaterbodyInventoryAndPriorityWaterbodiesListShorelineSegment_DataSet
State of New York —
The Waterbody Inventory/Priority Waterbodies List (WI/PWL) dataset is an inventory of the state's surface water quality. This dataset provides a summary of general... -
Federal
Estuarine Habitat and Juvenile Dungeness Crab Data (2010-2011)
U.S. Environmental Protection Agency —
This dataset contains juvenile Dungeness crab (Cancer magister) abundance data and associated habitat data from three estuaries in Oregon (Tillamook, Yaquina, and... -
Federal
LEAN-Corrected Collier County DEM for wetlands
Department of the Interior —
Lidar-derived digital elevation models often contain a vertical bias due to vegetation. In areas with tidal influence the amount of bias can be ecologically... -
Federal
Nitrogen sources to and export from the Chesapeake Bay watershed, 1950 to 2050
Department of the Interior —
This U.S. Geological Survey data release contains datasets that combine past data with future projections of nitrogen sources and nitrogen export to the Chesapeake... -
Federal
Wave power on marsh units in Connecticut salt marshes
Department of the Interior —
This data release contains coastal wetland synthesis products for the state of Connecticut. Metrics for resiliency, including the unvegetated to vegetated ratio... -
Federal
Side-Scan_Sonar backscatter tiles for Hudson River, NY (.xtf)
National Oceanic and Atmospheric Administration, Department of Commerce —
Raw XTF files. Sonar data were collected November 6 to December 15, 2009, in the estuary north from Saugerties to Troy. Data Collection and Processing: The... -
Federal
National Status and Trends: Mussel Watch Program - Resurrection Bay Database
National Oceanic and Atmospheric Administration, Department of Commerce —
In response to the growing concerns among Native communities about the safety of subsistence shellfish, this project assessed the health risks associated with... -
Federal
EnviroAtlas - Percent Agriculture on Hydric Soil by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset contains data on Agricultural Land Coverage on Hydric Soils for each Watershed Boundary Dataset (WBD) 12-Digit Hydrologic Unit Code (HUC-12)... -
Federal
EPA Facility Registry Service (FRS): NPDES
U.S. Environmental Protection Agency —
This web feature service contains ___location and facility identification information from EPA's Facility Registry Service (FRS) for the subset of facilities that link... -
Federal
National Fish Habitat Action Plan (NFHAP) - Coastal Spatial Framework and Coastal Indicator Data
National Oceanic and Atmospheric Administration, Department of Commerce —
The NFHAP Coastal Spatial Framework and Indicator Datasets consist of a geospatial base layer developed in ArcGIS, and associated data fields joined to the spatial...
714 datasets found