Bard Lake, also known as Wood Ranch Reservoir, is a 231 acres reservoir which is the largest lake in Simi Valley, California. It is east of the intersection of Olsen Road and Moorpark Freeway, near the border between Simi Valley and Thousand Oaks. Built in 1965, Bard Lake is a 416 feet high reservoir with a capacity of 11,000 acre-feet. It is an ear…Bard Lake, also known as Wood Ranch Reservoir, is a 231 acres reservoir which is the largest lake in Simi Valley, California. It is east of the intersection of Olsen Road and Moorpark Freeway, near the border between Simi Valley and Thousand Oaks. Built in 1965, Bard Lake is a 416 feet high reservoir with a capacity of 11,000 acre-feet. It is an earthen dam which is owned by the Calleguas Water District.