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
London Bridge (Lake Havasu City) of London. The original stonework was used to clad a new concrete structure. The reconstruction took slightly over three years and was completed in late 1971. The bridge was not reconstructed over a river, but rather it was rebuilt on land in a position between the main part of the city and Pittsburgh Point, at that time a peninsula jutting into Lake Havasu. Once completed, the Bridgewater Channel Canal was dredged under the bridge and flooded, separating Pittsburgh Point from the city, creating an island. As a result, the bridge now traverses a navigable shortcut between the Thompson Bay part