由土堤形成的露天水库可被归类为具有高地震危险性的设施，尤其是在周边地区已高度开发的情况下。1979年至1980年，西雅图水利部（SWD）聘请了一家岩土工程公司，对12个水库堤坝进行安全评估，并进行稳定性分析，以评估其中9个设施在地震发生时的预期性能。本文描述了西雅图地区的地震活动、安全检查中应包括的项目、岩土地震稳定性分析以及推荐的性能测量。 以社会福利署水库的评估为例。地震分析的结果确定，土堤能够承受地震多发区可能的震动水平。还提出了实施路堤附近植被控制程序的建议，以及出口控制、地下排水口、记录保存和检查的建议。包括1个参考、表格、图表。

Open storage reservoirs formed by earthen embankments may be classified as facilities with a high seismic hazard potential, especially if the surrounding areas have been heavily developed. In 1979-80, the Seattle Water Department (SWD) retained a geotechnical engineering firm to provide safety evaluations of 12 reservoir embankments and to provide stability analyses to evaluate the expected performance of 9 of these facilities in the event of earthquakes. This article describes the seismicity of the Seattle area, items that should be included in safety inspections, geotechnical seismic stability analyses, and recommended performance measurements. The evaluations of the SWD reservoirs are used as examples. Results of seismic analyses determined that the earthen embankments could withstand likely levels of shaking in this earthquake-prone area. Suggestions are also presented for implementing procedures for controlling vegetation near the embankments, as well as recommendations for outlet controls, underdrain outlets, recordkeeping, and inspections. Includes 1 reference, table, figures.