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Beta

Catalog datasets represent a fraction of data in use by active WMA projects. The team is working on including more datasets to provide a complete view of data-in-use. Let us know how your experience is!

Datasets

NHDPlus v1

Domain: Hydrology

Variables: Flowlines; Catchments

Spatial Resolution: 1:100,000

Temporal Frequency: NA

Temporal Coverage: NA

Spatial Extent: CONUS, HI, PR, VI

Source: USGS; EPA

Update Type: Static

Update Frequency: NA

Update Detail: NA

Access:

Description:

Wording from Horizon Systems Corporation website: NHDPlus Version 1 (Archive)

Please note that NHDPlusV1 is replaced in its entirety by NHDPlusV2. NHDPlusV1 data will remain available through this archive, however, users are encouraged to migrate existing applications and develop new applications using the far superior NHDPlusV2.
First released in 2006, the NHDPlusV1 consists of ten components: 1) 2006 version of the 1:100K National Hydrography Dataset (NHD), 2) 2004 version of the 30 meter National Elevation Dataset (NED), 3) A set of value added attributes to enhance stream network navigation, analysis and display, 4) An elevation-based catchment for each flowline in the stream network, 5) Catchment characteristics, 6) Headwater node areas, 7) Cumulative drainage area characteristics, 8) Flow direction and flow accumulation grids, 9) Flowline min/max elevations and slopes, and 10) Flow volume & velocity estimates for each flowline in the stream network.

Citation:

U.S. Environmental Protection Agency (USEPA) and U.S. Geological Survey (USGS), 2005, National Hydrography Dataset Plus - NHDPlus version 1, https://nhdplus.com/NHDPlus/NHDPlusV1_home.php