Lake Havasu City | Arizona, United States britannica.com Lake Havasu City, city, Mohave county, western Arizona, U.S., in the Chemhuevi Valley along the Colorado River, west of the Mohave Mountains. A planned community, Lake Havasu City was founded in 1964 and promoted by the industrialist Robert P. McCulloch as the focal point of a recreational and retirement development. It soon became the county’s ... .... read more