The levee design elevation has accounted for wave run-up, and the access points are protected from wave run-up with a concrete floodwall on the bay side of the access point. Flood barriers are also located at the egress bridge. Elevations along the new trail (bottom of the openings) are generally at least four feet above the current 100-year water level in San Francisco Bay, allowing for future sea level rise. The top of the walls are designed for the wave run-up associated with high winds and high tide levels. Those outer walls will provide protection against the wave run-up and are designed to be sufficiently long to break the waves before that water would find its way through the back wall opening.