Canyon Lake: The second reservoir in the swim challenge is Canyon Lake, elevation at 1,660 feet (505m), formed by the Mormon Flat Dam. Many swimmers find this the most beautiful swim yet a bit disorienting due to all the twists and curves following the old Salt River. The dam is 380 feet long, 224 feet high and was built between 1923-25. The dam is named after nearby Mormon Flat, a place where settlers from Utah stopped to camp. Canyon Lake, with a surface area of 950 acres (380 ha), is the smallest of four lakes created along the Salt River. It is within the Superstition Wilderness of Tonto National Forest and is a popular recreation area. Fish populating the lake include rainbow trout, large mouth bass, small mouth bass, yellow bass, crappie, sunfish, catfish and walleye. Wildlife in the area includes big horn sheep, deer and javelina that roam freely in this area of the national forest. The swim begins at the buoy line below Horse Mesa dam, notoriously the coldest start of SCAR, and ends 9 miles (14.4 km) at the buoy line protecting the Mormon Flat dam.