圣迭戈县的繁荣一直与供水有关。降雨量有限 随着人口的迅速增长，供水机构不断面临保持水龙头畅通的挑战。这个 圣地亚哥县水务局的批发业务为该地区供水， 然后由25家不同的零售机构通过自己的 管道、水库、泵站和调节设施的分配系统。计划 这些配电系统及其组件设施随着San的不断变化而发展 迭戈环境。本文讨论了圣地亚哥地区供水和分配系统规划15年的经验教训。 经验教训包括:投资于规划；配电系统规划从供应开始；综合设施规划为 工程和财务问题；火流分析并不总是简单的火流分析；动态水力模型是有用的工具；标准可能因地区而异，这没关系；地理信息系统（GIS）是分析和数据管理的新平台；供水和系统可靠性问题很重要；资产管理是来帮忙的（CMOM和GASB 34）；而且，未来将像过去一样，只是更像过去。包括数字。

San Diego County's prosperity has always been tied to its water supply. With limited rainfall and a burgeoning population, water agencies are constantly challenged to keep the taps flowing. The wholesale operation of the San Diego County Water Authority provides water to the region, which is then delivered to customers by 25 different retail agencies through their own distribution systems of pipelines, reservoirs, pump stations, and regulating facilities. Planning these distribution systems and their component facilities has evolved with the changing San Diego environment. This paper discusses the lessons learned from 15 years of experience in the San Diego area water supply and distribution system planning. The lessons include: invest in planning; distribution system planning starts with supply; integrated facilities planning provides essential interaction of engineering and financial issues; a fire flow analysis is not always just a fire flow analysis; dynamic hydraulic models can be useful tools; criteria may vary from district to district, and that's OK; geographic information system (GIS) is the new platform for analysis and data management; water supply and system reliability issues are important; asset management is here to help (CMOM and GASB 34); and, the future will be like the past, only more so. Includes figures.