Impact of GNIS on NHD. By: Katy Hattenhauer ADEQ GIS Manager & AR State NHD Steward October 6, 2010. History of NHD. NHD is standard hydrography coverage for the nation NHD also features flow-direction capability Study cause-and-effect relationships
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By: Katy Hattenhauer
ADEQ GIS Manager & AR State NHD Steward
October 6, 2010
Faulkner County, Arkansas