The efficiency of vector-valued intensity measures for predicting the seismic demand in gravity dams is investigated. The Folsom gravity dam-reservoir coupled system is selected and numerically analyzed under a set of two-hundred actual ground motions. First. the well-defined scalar IMs are separately investigated. https://www.roneverhart.com/E3-Spark-Plugs-6-2L-Hellcat-Demon-Trackhawk-2015-2022/