Abstract

GIS Based Water Main Replacement Prioritization for Tucson Water
Track: Water, Wastewater, and Stormwater
Authors: Dean Trammel Jr PE, Karla Borbon

Tucson Water (TW) maintains over 4500 miles of water mains. Much of this infrastructure has passed its useful life. Using its enterprise GIS database, TW has created sets of GIS models to analyze, identify, and prioritize water main replacements. Management staff created a matrix of weighted factors to score areas identified for main replacement using the GIS models. Capital Improvement Projects (CIP) for main replacements are now prioritized by their model score using the weighted factors.