Local and regional officials appear intent on driving a stake through the heart of a plan to build a hydroelectric power system with components in the Santa Ana Mountains, Lakeland Village and Lake Elsinore. The Riverside County Board of Supervisors this week joined the city of Lake Elsinore and the Elsinore Valley Municipal Water District in condemning the resurrection of the Vista-based firm Nevada Hydro‘s application for the Lake Elsinore Advanced Pumped Storage project with the Federal Energy Regulatory Commission.