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National Hydrography Dataset (NHD) Archive
This page is meant to act as an archival repository for previous versions of the statewide National Hydrography Dataset (NHD) which includes the Watershed Boundary Dataset (WBD)... -
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... -
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... -
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... -
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. -
National Hydrography Dataset (NHD) Archive
This page is meant to act as an archival repository for previous versions of the statewide National Hydrography Dataset (NHD) which includes the Watershed Boundary Dataset (WBD)... -
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... -
Regions for regional regression equations
Regional regression equations were calculated in Puerto Rico with generalized least squares techniques to estimate flood frequency statistics at ungaged locations using drainage... -
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... -
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... -
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. -
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-... -
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... -
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-... -
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) - 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... -
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-...