NHDPlus National Data
NHDPlusV2 National data is a group of datasets each of which covers the continental U.S.
The following links exit the site
- V2nn is Version (2) and subversion (nn) of the NHDPlusV2 data model
- Componentname is the name of the NHDPlusV2 component contained in the file
- vv is the data content version, 01, 02, ... for the component