基于PC的水力建模软件的广泛接受，以及基于PC的地理信息系统（GIS）的最新进展，使水利设施能够探索集成桌面GIS和网络建模技术的好处。在洛杉矶水电局（LADWP）的案例中，一个水力建模项目于1990年启动。截至1994年11月，该市75%以上的区域已使用两个基于PC的水力建模软件包进行建模。 此后，工程师对模型进行了审查，并将其用于水系统分析、设计、规划和客户支持。1994年5月，在与正在进行的水力建模项目协调下，洛杉矶供水系统开始了一个试点项目，以开发一个基于PC的地理信息系统，该系统在结构上与网络建模软件兼容。在项目期间，探索了将水力学与基于GIS的供水设施地图相结合的几个方面。 此外，还开发了一个试点地理压力信息系统，该系统使任何与IBM兼容的PC用户都能够输入客户的街道地址，并为客户提供最大和最小压力报价。本文的目的是描述LA Water System的水力建模项目，以及在试点项目期间将水力学与GIS相结合所采用的各种技术。

Widespread acceptance of PC-based hydraulic modeling software and recent advances in PC-based geographic information systems (GIS) have enabled water utilities to explore the benefits of integrating desktop GIS and network modeling technologies. In the case of the Los Angeles Department of Water and Power (LADWP), a hydraulic modeling project was started in 1990. As of November 1994, over 75% of the City's area has been modeled using two PC-based hydraulic modeling software packages. Models have since been reviewed and utilized by engineers for water system analysis, design, planning and customer support. In May 1994, in coordination with the on-going hydraulic modeling project, the LA Water System began a pilot project to develop a PC-based geographic information system that would be structurally compatible with network modeling software. During the project, several aspects of integrating hydraulics with GIS-based water facility maps were explored. In addition, a pilot Geographic Pressure Information System was developed which gives any IBM-compatible PC user the ability to enter a customer's street address, and provide the customer with a maximum and minimum pressure quotation. The purpose of this paper is to describe the LA Water System's hydraulic modeling project and the various techniques that were employed to combine hydraulics with GIS during the pilot project.