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Database of modified routing for NHDPlus version 2.1 flowlines: ENHDPlusV2_us

Dates

Publication Date
Time Period
2018

Citation

Schwarz, G.E., and Wieczorek, M.E., 2018, Database of modified routing for NHDPlus version 2.1 flowlines: ENHDPlusV2_us: U.S. Geological Survey data release, https://doi.org/10.5066/P9PA63SM.

Summary

This database (ENHDPlusV2_us) contains a topologically reconditioned (enhanced) version of the U.S. Environmental Protection Agency (USEPA) and the U.S. Geological Survey (USGS) NHDPlus Version 2.1 (NHDPlusV2) flowline network. The comma separated file included in this release contains routing and stream connection information, with the intention of improving accuracy and networking capabilities. The enhancements described here include corrections to inconsistencies in network and routing information, filling-in missing attribute values of associated characteristics, and revisions to diverted flow routing. The database is intended for routing purposes only; no cartographic changes were made to the original NHDPlusv2 flowline line work. [...]

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Attached Files

Click on title to download individual files attached to this item.

ENHDPlus_Modified.txt
“File of all modified flowlines”
48.59 KB
ENHDPlusV2_us.zip
“Routing database”
153 MB
NHDPlusv2_RoutingDatabase_mew.xml
Original FGDC Metadata

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46.01 KB
ENHDPlus_Tables.xlsx
“Table item descriptions”
73.07 KB

Purpose

This database was created by the U.S. Geological Survey's (USGS) National Water-Quality Assessment (NAWQA) Project specifically for routing purposes to support modeling efforts and for estimating watershed characteristics throughout the network.

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  • USGS Data Release Products

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Additional Information

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Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9PA63SM

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