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1:250,000-scale Hydrologic Units of the United States
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 interest to the... -
12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapshot
This USGS data release consists of three datasets representing three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset... -
12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapsh...
This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with... -
12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapshot
This USGS data release consists of three datasets representing three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset... -
Watershed Boundary Dataset (WBD)
The Watershed Boundary Dataset (WBD) from The National Map (TNM) defines the perimeter of drainage areas formed by the terrain and other landscape characteristics. The drainage... -
Drainage basins of selected streamgages in West Virginia through 2020
Drainage basin areas for 376 USGS streamgages in West Virginia and adjacent states were delineated digitally. The USGS Watershed Boundary Dataset HUC12 sub-watershed lines were... -
HUC8 CA Simplified
The Watershed Boundary Dataset (WBD) is a seamless, national hydrologic unit dataset. Hydrologic units represent the area of the landscape that drains to a portion of the stream... -
HUC8 CA Simplified
The Watershed Boundary Dataset (WBD) is a seamless, national hydrologic unit dataset. Hydrologic units represent the area of the landscape that drains to a portion of the stream... -
Watershed Boundary Dataset (WBD)
The Watershed Boundary Dataset (WBD) from The National Map (TNM) defines the perimeter of drainage areas formed by the terrain and other landscape characteristics. The drainage... -
USGS Water-Quality Data for the Nation - National Water Information System (N...
The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands,... -
USGS Water Use Data for the Nation - National Water Information System (NWIS)
The U.S. Geological Survey's National Water-Use Information Program is responsible for compiling and disseminating the nation's water-use data. The USGS works in cooperation... -
12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapsh...
This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with... -
HUC8 CA Simplified
The Watershed Boundary Dataset (WBD) is a seamless, national hydrologic unit dataset. Hydrologic units represent the area of the landscape that drains to a portion of the stream... -
Subset of 8-digit Hydrologic Unit Code (HUC) watershed shapefile for the grea...
This subset of the USGS Water Boundary Dataset contains the polygons of the 50 8-digit Hydrologic Units that comprise the greater Central Valley study site. The Watershed... -
Watershed Boundary Dataset (WBD) - USGS National Map Downloadable Data Collec...
The Watershed Boundary Dataset (WBD) from The National Map (TNM) is a seamless, national hydrologic unit (HU) dataset. A HU defines the areal extent of surface water drainage to... -
12-digit hydrologic unit outlet (pour) points for the NHDPlus V2.1 WBD snapsh...
This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with... -
Watershed Boundary Dataset (WBD)
The Watershed Boundary Dataset (WBD) from The National Map (TNM) defines the perimeter of drainage areas formed by the terrain and other landscape characteristics. The drainage... -
USGS Groundwater Data for the Nation - National Water Information System (NWIS)
The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands,... -
Watershed Boundary Dataset (WBD) - USGS National Map Downloadable Data Collec...
The Watershed Boundary Dataset (WBD) from The National Map (TNM) is a seamless, national hydrologic unit (HU) dataset. A HU defines the areal extent of surface water drainage to... -
1:250,000-scale Hydrologic Units of the United States
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 interest to the...