National Hydrography Dataset (NHD)
The NHD is a GIS Dataset used to portray surface water and represents the drainage network with features such as rivers, streams, canals, lakes, ponds, coastline, dams, and stream gages. The NHD is the surface water hydrography layer of The National Map.
Watershed Boundary Dataset (WBD)
IDWR and Natural Resource Conservation Service (NRCS), in cooperation with various state and local agencies, produced the statewide WBD for 5th and 6th field watersheds for the State of Idaho. Idaho received a Full Certification status for the WBD effort in Idaho on December 2, 2008. Thank you to all cooperators, data stewards and interested parties who helped in this endeavor!
NHDPlus HR development for Region 17 (Pacific Northwest including the majority of Idaho) is done! The Beta NHDPlus HR for region 16 is also available!
You can access the NHDPlus HR data from these two locations:
- Visit the USGS Access National Hydrography Products website, and find the section titled Download by Link.
- Visit The National Map Downloader.
The NHD & WBD are integrated into a common data model, and the new WBD boundaries are packaged with the NHD Subbasins as they are checked out and downloaded.
The NHD can be downloaded by Hydrologic Unit using the NHD Viewer, by Pre-Staged Subregion, by State Extract, or with a National Snapshot.
The WBD can be download a standalone dataset by areas of interest.