Abstract

NHDPlus V2 – Next Generation of Stream Vector/Attribute Data
Track: Water Resources
Authors: Cindy McKay, Tommy Dewald

NHDPlus is a set of vector and raster geo-spatial layers that result from the vertical integration of three major source datasets: the National Hydrography Dataset (NHD), the National Elevation Dataset (NED), and the Watershed Boundary Dataset (WBD). In addition, NHDPlus contains many value added attributes (VAAs) that are computed using complex spatial analysis of the surface water network. NHDPlus Version 2 contains a significant upgrade to the vector source datasets: NHD and WBD. It also contains many new VAAs designed to enable users to build even more powerful application than were possible with NHDPlus Version 1. This presentation will discuss the significant improvements to the vector and attribute sides of NHDPlus.