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State
MD iMAP: Maryland Tidal Waters
State of Maryland —
This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov. The MD_Surface_Waters Feature Dataset includes 7 feature classes that... -
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
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
Recommended Fishing Rivers And Streams
State of New York —
This data displays the access locations of rivers and streams for fishing in New York State, as determined by fisheries biologists working for the New York State... -
University
GNIS: Water Features
Earth Data Analysis Center, University of New Mexico —
The Geographic Names Information System (GNIS) actively seeks data from and partnerships with Government agencies at all levels and other interested organizations.... -
Federal
Fish Community and Associated Habitat Data From the Heartland Inventory and Monitoring Network: 2001-2023 - Data Package
Department of the Interior —
This monitoring dataset consists of fish community data for Buffalo National River, Ozark National Scenic Riverways and multiple prairie stream park units throughout... -
State
8-digit HU (Subbasin) NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
State
6-digit HU (Basin) NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
Federal
CIMEK water chemistry
U.S. Environmental Protection Agency —
Water chemistry data from 60 sites in a partially mined eastern Kentucky watershed. Sites are spatially located from headwater tributaries to mouth for analysis of... -
Federal
Wadeable Stream Habitat Assessments in the Southeastern United States, 2017-2024 Cumulative Data Package
Department of the Interior —
This package contains data collected by the Southeast Coast Network (SECN), a part of the Inventory and Monitoring Division (IMD) of the National Park Service (NPS).... -
Federal
Pharmaceutical contaminant concentration and watershed geospatial land-use/land-cover data for small wadeable streams in the Piedmont ecoregion of the USA assessed during the Southeastern Region Stream Quality Assessment during April through June 2014
Department of the Interior —
Filtered water samples were collected by the USGS National Water Quality Program (NWQP) Southeastern Stream Quality Assessment (SESQA) from 59 perennial, wadeable... -
State
Named Waterbody Set
State of Connecticut —
Named Waterbody is a 1:24,000-scale, polygon and line feature-based layer that includes all named waterbodies depicted on the U.S. Geological Survey (USGS) 7.5 minute... -
State
Hydrography Line
State of Connecticut —
Connecticut Hydrography Set: Connecticut Hydrography Line includes the line features of a layer named Hydrography. Hydrography is a 1:24,000-scale, polygon and line... -
Federal
Puerto Rico ESI and RSI: ESI (Environmental Sensitivity Index Shoreline Types) / RSI (Reach Sensitivity Index River and Stream Types)
National Oceanic and Atmospheric Administration, Department of Commerce —
This data set comprises the Environmental Sensitivity Index (ESI) and Reach Sensitivity Index (RSI) data for Puerto Rico. ESI data characterize estuarine environments... -
Federal
Links to Freshwater Explorer datasets A-cjtc 20190408
U.S. Environmental Protection Agency —
These are data stored on the EPA GeoPlatform based on ArcGis (ESRI). They are in the form ArcGis tables or Excel files. This "Predicted Background Conductivity" view... -
State
Refuge Conveyance Waterways - Central Valley Project Improvement Act [ds2635]
State of California —
Data was compiled to provide a singular visual representation of conveyance waterways and features available to deliver water to CVPIA wetland habitat area and to... -
Federal
Brawleys Fork crayfish (Cambarus williami) pCH plot points
Department of the Interior —
Brawleys Fork crayfish (Cambarus williami) proposed critical habitat unit coordinates/plot points are provided here as a csv file. As noted in the proposed rule... -
Federal
Hydrographic and Impairment Statistics Database: SHEN
Department of the Interior —
Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in... -
Federal
Map Layer: Advanced Hydrologic Prediction Service (AHPS) River Gauge Current and Forecast Flood Stages
National Oceanic and Atmospheric Administration, Department of Commerce —
This layer shows the locations of the United States Geological Survey sampling stations that are equipped with telemetry to transmit data on streamflow, temperature,...