Assessment of Water Systems for Seismic Hazard Mitigation

Assessment of Water Systems for Seismic Hazard Mitigation

Implementation of a seismic assessment tool for the Kaohsiung metropolitan area water supply systems is introduced in this paper. The assessment was undertaken based on earthquake scenario simulation that employed the Twater software system developed by NCREE. Twater is able to simulate damage to the component pipelines and facilities of a metropolitan water system, as well as any impacts to their functionality and the system's serviceability following an earthquake event. As the input data, Twater utilizes the inventory and hierarchy of relevant system components including raw water aqueducts, water treatment plants, major clear water conveyance trunks, and water transmission and distribution pipeline networks, as well as their relationship with the water supply areas in a system. Based on the assessment results, suggestions to improve the Kaohsiung metropolitan area water supply systems have been made for future hazard mitigation.