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USGS Mineral Resources On-line Spatial Data
Interactive maps and downloadable data for regional and global Geology, Geochemistry, Geophysics, and Mineral Resources. --USGS Users may browse by topics such as geologic... -
USGS Water Resources: 1:250,000-scale Hydrologic Units of the United States
From the site: "The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of... -
1:2,000,000-scale Hydrologic Units of the United States (SUPERSEDED)
This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. It was revised for... -
National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Coll...
The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information... -
EnviroAtlas - NHDPlus V2 Hydrologic Unit Boundaries Web Service - Conterminou...
This EnviroAtlas web service contains layers depicting hydrologic unit boundary layers and labels for the Subregion level (4-digit HUCs), Subbasin level (8-digit HUCs), and... -
BLM REA MIR 2011 AG C Chinook HUC12 poly
This dataset 6th level HUC watersheds that intersect with the Chinook distribution in the middle rockies ecoregion. -
WPC RF3 river reachs (includes percentage land-use)
Drainage area polygons for each RF3 river reach flowing in Pennsylvania. Includes percentage land-use information from the National Land Cover Dataset for each river reach... -
12-Digit Watershed Boundary Data 1:24,000 for EPA Region 2 and Surrounding St...
12 digit Hydrologic Units (HUCs) for EPA Region 2 and surrounding states (Northeastern states, parts of the Great Lakes, Puerto Rico and the USVI) downloaded from the Natural... -
SWAP Aquatic Targets - 2015 [ds2733]
General InformationThe SWAP defines "targets" throughout the state and describes "Strategies" for each target. The grouping for these targets is based on "Hydrologic Units"... -
Estimated Water Use by Select Subbasin and State (HUC8/State) in the Pee Dee,...
The coastal region which includes areas within South Carolina and North Carolina was chosen as a focus area study (FAS) for the U.S. Geological Survey (USGS) National Water... -
National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Coll...
The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information... -
SWAP Aquatic Targets - 2015 [ds2733]
General InformationThe SWAP defines "targets" throughout the state and describes "Strategies" for each target. The grouping for these targets is based on "Hydrologic Units"... -
BLM REA MIR 2011 AG C Grayling HUC12 poly
This dataset 6th level HUC watersheds that intersect with the Grayling distribution in the middle rockies ecoregion. -
1:2,000,000-scale Hydrologic Units of the United States (OLDER)
This data set has been superseded by huc2m. This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and... -
NYC Reservoirs Watershed Areas (HUC 12)
This NYC Reservoirs Watershed Areas (HUC 12) GIS layer was derived from the 12-Digit National Watershed Boundary Database (WBD) at 1:24,000 for EPA Region 2 and Surrounding... -
BLM REA MIR 2011 NWP HUC10 Boundary
This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of geo-... -
BLM REA MIR 2011 Middle Rockies HUC10 buffer
This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of geo-... -
EnviroAtlas - HU12_polygon
This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of geo-... -
1:2,000,000-scale Hydrologic Units of the United States (OLDER)
This data set has been superseded by huc2m. This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and... -
BLM REA NWP 2011 HUC 12
This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of geo-...
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