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Track: Water Distribution, Wastewater, Sewer
Aaron Ramirez
Anchorage Water and Wastewater Utility
3000 Arctic Blvd.
Anchorage, AK 99503
Telephone: 907-564-2765
Fax: 907-562-0824
E-mail: arhengrs@aonline.com
Mark Pearson
Interfacing Potable Water Hydraulic Models with ArcInfo and ArcView Data Sets: From Start to Finish
Defining Issue: Water utilities invest significant resources developing detailed GIS and mapping data sets. The same data sets can and should be used to feed hydraulic models used to predict the performance of the water network. GIS Solution: Anchorage Water and Wastewater Utility (AWWU) and GeoNorth, Inc., developed an interface that allows detailed GIS water system data to be used in the public domain EPANET hydraulic model. Conversely, model results can be pulled into the GIS for further analyses, data publishing, and thematic mapping. Methodology: This paper discussed the pros and cons of various interface methodologies and then provides a step-by-step description of the successful implementation of a two-way interface. Issues discussed include why GIS/model interfaces or integrations are important, interfacing versus integration, aggregation of pipes with similar characteristics, choosing a level to which modeling should occur, quality control, calibration, connectivity issues that arise during
modeling, practical limitations of models, and the use of model results within the GIS. The presentation will include live demonstrations of the interface, as well as demonstrations of mapping and data products that can be derived by using model results within the GIS. Software: This system makes use of ArcView, and EPANET, interfacing with data originally constructed in ArcInfo.
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