USGS - science for a changing world

NHD/WBD Stewardship


Report Data Issue

Requests should be limited to minor updates that keep you from using the NHD for analysis or applications.

To request maintenance/corrections to the NHD, fill out the form below. Make sure you have the correct 4-digit subregions or 8-digit subbasins, and the correct IDs or Reachcodes for the features you would like the USGS to review. Incorrect numbers will not be reviewed.

Your name
Your E-mail
Hydrologic Unit / ReachCode (Enter either a region, subregion, basin, subbasin, or reachcode number. If this problem affects other ReachCodes, enter them in the problem description).


State affected Choose the state where this problem occurs. The POC for that state will be notified


Problem description Feel free to specify additional IDs or add links to external files.

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Last Modified: 11/18/16      Accessibility FOIA Privacy Policies and Notices