Abstract

Representing different hydrologic conditions in hydrographic networks
Track: Water Resources
Authors: Alan Rea

Geospatial hydrographic networks, such as the National Hydrography Dataset (NHD) and NHDPlus, usually represent a static view of stream connectivity for average flow conditions. However, different sets of stream-network connections may be appropriate for flood or drought conditions. This presentation outlines a possible approach to this problem by illustrating how different hydrologic conditions can be represented using the NHDPlus, Version 2 flow table and Value-Added Attributes.