Impact on Water Supply of a Seismically Damaged Water Delivery System

by M. Shinozuka, Princeton Univ, Princeton, United States,
H. Hwang, Princeton Univ, Princeton, United States,
M. Murata, Princeton Univ, Princeton, United States,

Document Type: Proceeding Paper

Part of: Lifeline Earthquake Engineering in the Central and Eastern U.S.


This paper presents the damage evaluation of a water delivery system caused by the ground shaking in the event of an earthquake by using the LIFELINE-W computer program. The adequacy of post-earthquake water supply and the possible impacts on the residents and industries in an urban area are assessed. In this study, the Memphis water delivery system is used as an example. A scenario earthquake of 7.5 moment magnitude is assumed to occur at Marked Tree, Arkansas. If the supply nodes such as pumping stations and elevated tanks remain intact during the earthquake, it is predicted that the Memphis water network could deliver sufficient water to most areas in Memphis and Shelby County except a few census tracts. The post-earthquake water output in tract 202 is only about half of the intact condition. This is caused by severe ground shaking and poor network connectivity. Since this tract has a large population, shortage of water supply after the earthquake may have significant effects on the residents in this area.

Subject Headings: Water supply systems | Water supply | Earthquakes | Seismic tests | Seismic effects | Water shortage | Pumping stations | Computer software | Arkansas

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