The first batches of rainbow trout to be stocked were secured by a partnership with the Arizona Game and Fish Department. The hatchery has also started raising rainbow trout from the egg stage. The hatchery, built in 1959, is located 12 miles downstream of Hoover Dam on the Arizona side of the Colorado River within Lake Mead National Recreation Area. It is one of 70 other such facilities in the U.S. Fish and Wildlife Service’s National Fish Hatchery System.