727 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... -
State
305b Assessed 2014 Lake
State of Connecticut —
305b Assessed 2014 River Lake Estuary Set: Connecticut 305b Assessed River 2014 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
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 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
Southeast Coast Network Assessment of Estuarine Water Quality at Cumberland Island National Seashore, 2007-2022
Department of the Interior —
The Southeast Coast Network assessed water-quality at Cumberland Island National Seashore as part of the National Park Service Vital Signs Monitoring Program.... -
Federal
Tribal Land Boundary Polygons, R6 and R9 U.S.-Mexico Border Region, 2021, U.S. Environmental Protection Agency
U.S. Environmental Protection Agency —
This polygon feature class contains the boundaries of tribes in the U.S. - Mexico Border region used by U.S. EPA Region 6 (R6) and U.S. EPA Region 9 (R9) for the... -
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.... -
State
CT 305b Assessed Lake 2022
State of Connecticut —
305b Assessed River, Lake, Estuary 2022: Connecticut 305b Assessed River 2022 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
Federal
Los Angeles Area Permit Holder Estimated Trash Load Reduction, Los Angeles CA, 2012, US EPA Region 9
U.S. Environmental Protection Agency —
The Los Angeles River has been designated as an impaired waterbody due to the large volume of trash it receives from the watershed. To address this problem a Total... -
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
Lower Yaquina multiparameter water quality datasonde data set: January 2009 to April 2025
U.S. Environmental Protection Agency —
A Yellow Springs Inc. (YSI) multiparameter water quality datasonde (model numbers 6600 EDS, 6600 V2-4 or EXO2) was deployed off the Oregon State University (OSU) pump... -
Federal
Paired Sentinel-2 – water quality databases for estuaries and tidal freshwater rivers.
U.S. Environmental Protection Agency —
There are five datasets included in this collection. One dataset (SiteInventoryunique.shp) provides metadata for sampling stations associated with estuarine water... -
Federal
Monterey Bay National Marine Sanctuary: Sanctuary Integrated Monitoring Network (SIMoN)
National Oceanic and Atmospheric Administration, Department of Commerce —
The Sanctuary Integrated Monitoring Network (SIMoN) is an integrated, long-term program that takes an ecosystem approach to identify and understand changes to the... -
Federal
Landsat surface temperature
U.S. Environmental Protection Agency —
Relatively cloud-free Landsat scenes within ±3 days of coincident in situ measures were retained for validation across the CONUS. The Landsat surface temperature data... -
Federal
NOAA Operational Forecast System-Related Guidance Products for Waterborne Pathogens in the Chesapeake Bay
National Oceanic and Atmospheric Administration, Department of Commerce —
The presence of Vibrio vulnificus (Vv), a naturally-occurring bacteria that can be harmful to human health, is related to temperature and salinity. Vv forecasts for... -
Federal
Estuarine Salinity Zones in US East Coast, Gulf of Mexico, and US West Coast from 1999-01-01 to 1999-12-31 (NCEI Accession 0127396)
National Oceanic and Atmospheric Administration, Department of Commerce —
These unprojected (geographic coordinates) 3-Zone Average Annual Salinity Digital Geographies are based on analysis of long-term salinity data for 147 estuaries of... -
Federal
MS_AL_XYZ_metadata: Benthic foraminiferal data from the eastern Mississippi Sound salt marshes and estuaries
Department of the Interior —
Microfossil (benthic foraminifera) and coordinate/elevation data were obtained from sediments collected in the coastal zones of Mississippi and Alabama, including... -
Federal
Humboldt Bay Benthic Habitats 2009 Aquatic Setting
National Oceanic and Atmospheric Administration, Department of Commerce —
Humboldt Bay is the largest estuary in California north of San Francisco Bay and represents a significant resource for the north coast region. Beginning in 2007 the...
727 datasets found