NHD Video Library

 

Video Demos

   Download a Prestaged Subregion

   Download a Dynamic Extract

 

All About the NHD

   Overview of the NHD and The National Map - Part 1

   Overview of the NHD and The National Map - Part 2

   Understanding NHD Data

   How to Obtain NHD Data

  Understanding Drainage Systems

  Navigating the Network

  Linear Referencing

  Finding Events on the NHD Network

  Hydrography Event Management (HEM)

  Maintenance of the NHD