In the beautiful Sierra Nevada, a pristine river named Mokelumne breaks free. Carrying snowmelt and rain to the west, its ultimate destination is the Sacramento/ San Joaquin Delta, and then the San Francisco Bay. But well before it reaches its natural outlet, EBMUD’s 345-foot-tall, 1,337-foot-long Pardee Dam walls-off the water’s path and fills in Pardee Reservoir. From Pardee Reservoir, the East Bay drinks.