Abstract

The City and County of Honolulu, Department of Wastewater Management (DWMM) is charged with the wastewater service of approximately 900,000 living on the Island of Oahu. Effective management of the wastewater by DWMM is being aided through construction of an island-wide wastewater information management system (WIMS).

Modules within WIMS automate to a large extent the standard procedures for managing system inventory, estimating flows, and evaluating system hydraulics capacity. The use of the various modules within WIMS results in speedier evaluation of basin flows and impact of new sewer connections, improved project evaluations. It also provides a means to account for system-wide impacts that was not practical to account for in the past. This chapter outlines two new modules developed for WIMS: the Sewer Flow Analysis System (SFAS) and the Sewer Connection Application System (SCAS). Figure 22.1 shows the interconnection between SFAS, SCAS and other modules within WIMS.

SFAS and SCAS use the ArcInfo geographic information system (GIS), commercial packages for data management and hydraulic modelling, and customized computer programs to complement other components of WIMS. The two new WIMS modules integrate several different information management technologies.

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