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Abstract
Stream Network Analysis with the National Hydrography Dataset (NHD)
Track: Water Resources
Author(s): Timothy Bondelid, Lucinda McKay, Tommy Dewald
The NHD contains a powerful capability to traverse the stream network using what is referred to as the "Flow Table". This table contains information about the upstream and downstream connections between reaches. The Flow Table can be used in a variety of programming environments to develop important GIS-related information. This presentation will discuss how the Flow Table can be used within the ArcView and ArcInfo 8.x environments to compute key hydrologic information such as stream Order, cumulative drainage areas, total stream lengths, etc.
Timothy Bondelid
RTI
3040 Cornwallis Road
P.O. Box 12194
Research Triangle Park , NC 27709-2194
USA
Phone: (919) 990-8605
Fax: (919) 990-8600
E-mail: timothy@rti.org
Lucinda McKay
Horizon Systems Corporation
482 Montalto Drive
Herndon 20170
USA
Phone: (703) 471-0480
Fax: (703) 742-3965
E-mail: ldm@horizon-systems.com
Tommy Dewald
U.S. EPA
U.S. EPA
401 M Street (4503F)
Washington D.C. 20460
USA
Phone: (202) 260-2488
E-mail: Dewald.Tommy@epamail.epa.gov