本文总结了太平洋环境服务公司（Pacific Environmental Services）在两个美国空军基地实施水分配建模软件包的努力。模型开发需要对每个饮用水分配系统进行全面的水力分析。该模型还用于评估特定的操作场景，以及评估和优化考虑中的几个建设项目。这些努力是开展水脆弱性评估的一个更大项目的一部分，该项目包括评估设施的冗余度、对备用处理系统的需求、设施为正常使用和灭火提供足够压力的能力，以及人力需求。 选定的建模软件包WaterCAD是一个计算机模型，能够预测不同场景下的流量、压力和水质状况。收集了描述所有配电系统部件几何结构和特性的模型输入数据。现场流量测试的结果得出了现场得出的管道粗糙度系数。进行校准以确保模型准确预测通过现场测试测量的压力、流量和水质特征。校准完成后，假设并运行几个场景，以预测和/或分析不同操作条件的影响。对几个拟议的建设项目进行了评估，以确定管道变更、运行改造和/或系统升级的最佳组合，以弥补已知的低成本问题- 系统的压力区域。该模型还用于预测每个基地的储罐液位，以确定是否可以进行操作变更，以尽量减少每个储罐中的积水。最后，该模型与每个基地的地理信息系统（GIS）相连，以便将来根据需要对WaterCAD的输入文件进行简单更新。包括3个参考文献、图表。

This paper summarizes Pacific Environmental Services' efforts to implement a water distribution modeling software package at two US Air Force Bases. Model development was required to perform comprehensive hydraulic analyses of each potable water distribution system. The model was also used to evaluate specific operational scenarios, as well as evaluate and optimize several construction projects under consideration. These efforts were part of a bigger project to conduct a water vulnerability assessment that included evaluations of the redundancy of facilities, the need for back-up treatment systems, the ability of facilities to deliver adequate pressure for both normal use and fire suppression, and manpower requirements. The selected modeling package, WaterCAD, is a computer model capable of predicting flowrates, pressures, and water quality conditions for differing scenarios. Model input data describing the geometry and characteristics of all distribution system components were collected. Field-derived pipe roughness factors were developed as a result of on-site flow testing. Calibration was performed to ensure that the model accurately predicted pressures, flowrates, and water quality characteristics measured through field-testing. Once calibration was completed, several scenarios were postulated and run to predict and/or analyze the impact of different operating conditions. Several proposed construction projects were evaluated to determine the best combination of piping changes, operational modifications, and/or system upgrades to remedy known low-pressure areas of the system. The model was also used to predict storage tank levels at each Base in order to determine if operational changes could be made to minimize stagnant water formation in each tank. Finally, the model was linked to each Base's geographic information system (GIS) to allow for simple updating of WaterCAD's input files, as needed in the future. Includes 3 references, figures.