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Abstract
Using Network Analyst to Calculate Pollutant Travel TimesTrack: Water Resources
Author(s): William Benjamin Samuels, David E. Amstutz, Paul Bryant
A GIS-based tool has been developed to calculate the time of travel (based on real-time stream flow measurements), decay, and dispersion of a pollutant introduced into surface water. The tool allows the user to
· Select a location on a river to introduce a pollutant.
· Track the pollutant downstream, under real-time flow conditions, to a water supply intake.
· Further track the pollutant to a water filtration plant, and
· Identify the overall population served by the plant.
The databases required for this tool include the Enhanced River Reach File (ERF1), the USGS real-time stream flow measurements, and the EPA Safe Drinking Water Information System (SDWIS).
William Benjamin Samuels
Science Applications International Corporation
1410 Spring Hill Road
Mclean, VA 22102
USA
Phone: 703 288 6860
Fax: 703 356 8408
E-mail: William.B.Samuels@saic.com