Course of the Colorado River Topock Marsh in Topock Gorge and widens into Lake Havasu, formed by Parker Dam. Lake Havasu provides recreation as well as the home of the retired U.K. London Bridge in Lake Havasu City, Arizona, now the New London Bridge. Near Parker Dam are the first two major diversions of the lower Colorado: the Colorado River Aqueduct, which travels west to Los Angeles and San Diego, California; and the Central Arizona Project, which sends water east towards Phoenix and Tucson, Arizona. The intermittent Bill Williams River joins the Colorado from the east in Lake Havasu, just above Parker Dam. The river
Havasu Creek the trail and continuing downstream. The hike is long, difficult, and rugged, and it is advisable only for experienced hikers. The creek ends at the confluence, where there are some camping areas. This spot is also popular for river rafters to stop and to head up the canyon. Flooding is common along Havasu Creek. A government report lists 14 "historic floods" from 1899 to 1993. One such flood occurred on August 17, 2008, when the Redlands Dam on Havasu Creek burst after days of heavy rain. The floodwaters' threat to human life led local authorities to evacuate the village. Rescue