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Crosswalk Table Between NHDPlus V2.1 and its Accompanying Watershed Boundary Dataset Snapshot of 12-Digit Hydrologic Units

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Citation

Moore, R.B., Johnston, C.M., and Hayes, L., 2019, Crosswalk Table Between NHDPlus V2.1 and its Accompanying WBD Snapshot of 12-Digit Hydrologic Units: U.S. Geological Survey data release, https://doi.org/10.5066/P9CFXHGT.

Summary

A crosswalk table between NHDPlus version 2.1 flowlines (using the unique field COMID) and the Watershed Boundary Dataset (WBD) 12-digit-hydrologic units (HU-12) is provided for the 48 contiguous United States. The crosswalk table provides a WBD HU-12 assignment for every networked flowline in the NHDPlus. In this way, the network developed for navigation and modeling, NHDPlus, is aligned with accounting units of the WBD HU-12s to the extent possible given the assumptions that were made in creating each. A crosswalk table for NHDPlus isolated sinks was produced by a simple overlay process where the sinks were assigned HU-12 values based on their position relative to the WBD snapshot HU-12s. This table was integrated with the flowline [...]

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Attached Files

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CrosswalkTable_NHDplus_HU12_CSV.7z
“Table linking NHDplus v2 features with HUC12s (CSV)”
6.66 MB
HUC12_NHDPlusAssociation.py
“Supporting Python script”
49.97 KB
AccumulateUPAssignHUC12IDs.py
“Supporting Python script”
3.38 KB
Figure1.png
“Supporting figure”
thumbnail 137.8 KB
CrosswalkTableMetadata.xml
“Metadata”
Original FGDC Metadata

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17.4 KB
Supporting figure
Supporting figure

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ScienceBase WMS

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  • National Water-Quality Assessment - Hydrologic Systems Team (NAWQA - HST)
  • National Water-Quality Assessment Project
  • USGS Data Release Products

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9CFXHGT

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