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| Type: | Resource | |
| Storage: | The size of this resource is 286.9 MB | |
| Created: | Apr 03, 2026 at 2:15 p.m. (UTC) | |
| Last updated: | Apr 04, 2026 at 1:50 a.m. (UTC) (Metadata update) | |
| Published date: | Apr 04, 2026 at 1:50 a.m. (UTC) | |
| DOI: | 10.4211/hs.535aab9267ee4aed8502fd63dcd3fac2 | |
| Citation: | See how to cite this resource |
| Sharing Status: | Published |
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| Views: | 63 |
| Downloads: | 5 |
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Abstract
This resource includes a single GeoPackage containing upstream basin boundaries for 8,175 USGS streamflow gages used for data assimilation by v3.0 of the National Water Model. The file contains vector geometry and a single attribute ("provider_id") that indicates the associated USGS site code. Basin geometry is important for estimating drainage area and deriving areal statistics, such as mean areal precipitation. The list of included USGS gages was drawn from the National Water Model RouteLink files located here: https://www.nco.ncep.noaa.gov/pmb/codes/nwprod
Note that these basin boundaries are unofficial and may deviate significantly from official USGS estimates of contributing drainage area. These basin boundaries were derived by accumulating NHDv2 Catchments using the HyRiver suite of Python tools. See the "Drainage Area Delineation" example for more details: https://docs.hyriver.io/examples/notebooks/nwis_catchments.html
Subject Keywords
Coverage
Spatial
Temporal
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Content
README.txt
This resource includes a single GeoPackage containing upstream basin boundaries for 8,175 USGS streamflow gages used for data assimilation by v3.0 of the National Water Model. The file contains vector geometry and a single attribute ("provider_id") that indicates the associated USGS site code. Basin geometry is important for estimating drainage area and deriving areal statistics, such as mean areal precipitation. The list of included USGS gages was drawn from the National Water Model RouteLink files located here: https://www.nco.ncep.noaa.gov/pmb/codes/nwprod
Note that these basin boundaries are unofficial and may deviate significantly from official USGS estimates of contributing drainage area. These basin boundaries were derived by accumulating NHDv2 Catchments using the HyRiver suite of Python tools. See the "Drainage Area Delineation" example for more details: https://docs.hyriver.io/examples/notebooks/nwis_catchments.html
Related Resources
| This resource updates and replaces a previous version | Regina, J. A. (2026). National Water Model Assimilation Gage Basin Boundaries, HydroShare, http://www.hydroshare.org/resource/b26b7c34c2e94d9087119ae1506b3e11 |
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
|---|---|---|
| National Oceanic and Atmospheric Administration | None | None |
Contributors
People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.
| Name | Organization | Address | Phone | Author Identifiers |
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| Taher Chegini | University of Houston | Houston, US |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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