Stanislaus County supervisors approved a new route Tuesday for Del Puerto Canyon Road to make way for a reservoir west of Patterson. The proposed reservoir, just west of Interstate 5, would inundate a section of the road that winds through Del Puerto Canyon. Supervisors approved a 3.9-mile alternative route starting at Del Puerto Canyon Road, about half a mile from the intersection of Sperry Road and Interstate 5. From there, the new road will cross over foothill terrain to reconnect with Del Puerto Canyon Road near the 5-mile mark in the canyon.