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Mainstem Rivers of the Conterminous United States



Publication Date
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David L Blodgett, 20211001, Mainstem Rivers of the Conterminous United States: U.S. Geological Survey,,


"The data you have secured from the U.S. Geological Survey (USGS) database identified as Mainstem Rivers of the Conterminous United States have not received USGS approval and as such are provisional and subject to revision. The data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use." "Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government [...]

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Point of Contact :
David L Blodgett
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey

Attached Files

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102020wbd_outlets.gpkg 11.87 MB application/unknown
102020wbd.csv 6.51 MB text/csv
mainstems_summary.gpkg 306.46 MB application/unknown
nhdplusv1.csv 446.37 MB text/csv
rf1.csv 796.04 KB text/csv
nhdplusv2wbd_outlets.gpkg 11.68 MB application/unknown
nhdplusv2wbd.csv 6.47 MB text/csv
“10/26/2020 WBD”
2.74 GB application/zip


Persistent, cross-scale, identification of hydrologic features, network navigation, and hydrologic indexing (hydrographic addressing). The cross walk tables in the dataset relate the RF1, NHDPlusV1, NHDPlusV2, Watershed Boundary Dataset snapshot from NHDPlusV2, and Watershed Boundary Dataset from June 2021.

Additional Information


Type Scheme Key
DOI doi:10.5066/P9BTKP3T
USGS_ScienceCenter Integrated Modeling & Prediction Division
USGS_MissionArea Water Resources
USGS_keywords Geography, Hydrology, Water Resources

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