2,571 datasets found for "Hydrologic Units"
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Federal
5 Meter Alaska Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection NGDA
Department of the Interior —
This is a tiled collection of the 3D Elevation Program (3DEP) covering Alaska only, and is 5-meter resolution. The 3DEP data holdings serve as the elevation layer of... -
Federal
Black Canyon Of The Gunnison National Park Small-Scale Base GIS Data
Department of the Interior —
This data set contains small-scale base GIS data layers compiled by the National Park Service Servicewide Inventory and Monitoring Program and Water Resources... -
Federal
Central Valley Hydrologic Model version 2 (CVHM2): Model Discretization
Department of the Interior —
The updated Central Valley Hydrologic Model (CVHM2) is similar to the original Central Valley Hydrologic Model (CVHM) in terms of the basic units of model... -
State
Geologic investigation of the Haines-Takshanuk Mountains-Chilkat Peninsula area, Southeast Alaska
State of Alaska —
Geologic investigation of the Haines-Takshanuk Mountains-Chilkat Peninsula area, Southeast Alaska, Preliminary Interpretive Report 2025-4, provides the results of... -
Federal
Great Smoky Mountains National Park Trout Distribution
Department of the Interior —
The brook trout (Salvelinus fontinalis) is the only trout native to the southern Appalachian Mountains. It was once widespread in Great Smoky Mountains National Park... -
University
USGS 1 meter Digital Elevation Model
OpenTopography —
The 3D Elevation Program (3DEP) data serve as the elevation layer of The National Map, and provide basic elevation information for Earth science studies and mapping... -
Federal
GAGES-II: Geospatial Attributes of Gages for Evaluating Streamflow
Department of the Interior —
This dataset, termed "GAGES II", an acronym for Geospatial Attributes of Gages for Evaluating Streamflow, version II, provides geospatial data and classifications for... -
Federal
TRI National Analysis: Mapping Data for the Toxics Release Inventory Releases at Various Geographic Levels
U.S. Environmental Protection Agency —
These data provide mapping, display, and analysis capabilities for the TRI National Analysis data at the following geographic levels: state, county, large aquatic... -
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
Maine Lidar-Derived Watersheds
Department of the Interior —
Lidar Digital Elevation Models (DEMs) at 2-meter resolution have been used to derive watershed boundaries for the State of Maine. Geographic Information Systems (GIS)... -
Federal
Changes in anthropogenic influences on streams and rivers in the conterminous U.S. over the last 40 years, derived for 16 data themes
Department of the Interior —
This product consists of time-series calculations of anthropogenic characteristics derived for 16 data themes for multiple scales covering the conterminous United... -
Federal
EnviroAtlas - 303(d) Impairments by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset depicts the total length of stream or river flowlines that have impairments submitted to the EPA by states under section 303(d) of the Clean... -
Federal
National Hydrography Dataset Plus - NHDPlus
U.S. Environmental Protection Agency —
This high-level metadata data document will be supplemented with detailed regional metadata at a later date. The NHDPlusV2 is an integrated suite of application-ready... -
Federal
Generalized regions of the Mississippi Alluvial Plain
Department of the Interior —
As part of the U.S. Geological Survey (USGS) Water Availability and Use Science Program study of the Mississippi Alluvial Plain (MAP), a shapefile representing seven... -
University
USGS 1 arc-second Digital Elevation Model
OpenTopography —
This is a 1 arc-second (approximately 30 m) resolution tiled collection of the 3D Elevation Program (3DEP) seamless data products . 3DEP data serve as the elevation... -
Federal
Curecanti National Recreation Area Small-Scale Base GIS Data
Department of the Interior —
This data set contains small-scale base GIS data layers compiled by the National Park Service Servicewide Inventory and Monitoring Program and Water Resources... -
Federal
1/9th Arc-second Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection
Department of the Interior —
This is a tiled collection of the 3D Elevation Program (3DEP) and is 1/9 arc-second (approximately 3 m) resolution.The 3DEP data holdings serve as the elevation layer... -
Federal
U.S. Level III and IV Ecoregions (U.S. EPA)
U.S. Environmental Protection Agency —
This map service displays Level III and Level IV Ecoregions of the United States and was created from ecoregion data obtained from the U.S. Environmental Protection... -
Federal
BLM Natl NLCS Wilderness Areas Polygons
Department of the Interior —
Feature Class for the BLM Wilderness Areas and BLM Other Related Lands data covered by the National Landscape Conservation System (NLCS) Data Standard. In particular,...
2,571 datasets found for "Hydrologic Units"