Hydraulic models of water distribution systems are
becoming increasingly complex and are being used for
more applications. The cost of building and maintaining
these models is also increasing. The trend in
hydraulic modeling has been to integrate the vast
amount of data contained in a utility's constantly
changing geographic information system (GIS) with the
less frequently modified hydraulic model. This article
explains how thoughtful coordination of GIS data and
hydraulic model data can minimize the future cost of
hydraulic model development and maintenance. In the
industry, very limited information exists on effective
ways to coordinate these two data sets. The article
describes tools within GIS and modeling software used
to improve data accuracy as well as protocols that can
be established to allow the transfer of data corrections
or modifications between the model and the GIS. General
recommendations are presented to help a utility
more effectively manage data in order to successfully
maintain a hydraulic model. Includes 4 references, tables, figures.