AWWA IMTECH59645

The San Diego region has an intricate relationship with water supply and its distribution system, which is not easy to analyze without a good network model but developing a reasonable model requires a strong foundation in data. The region's water distribution network must be able to meet peak day demands, which can be 1.7 times the average day. Dry hydrologic years may see demands for supply shifting from local reservoirs to imported sources. Regional water resource development is a focus for the San Diego County Water Authority's (Water Authority) Regional Water Facilities Master Plan but this means analysis of a reoriented distribution network due to current flow patterns and the locations of resource opportunities. The real challenges begin when the Water Authority team (the Team) incorporated the region's dynamic growth projection through a thirty-year time horizon. Population is projected to grow from the current 2.7 million people to well over 3.7 million by 2030 and the impact from the population increase varies from one reach of the region to the other. This raises the question of how to meet current facility needs while filling the demographic demand of the future. The foundation of this analysis is good data integration and statistical examination of supply and demand trends.