Moapa Valley is a valley and census-designated place in Clark County, Nevada, United States. The valley is about 40 miles long and lies roughly northwest to southeast. The Muddy River, formerly called the Moapa River, originates from warm artesian springs and flows through the valley before emptying into Lake Mead. The towns of Moapa, Logandale and Overton are located in the valley. Logandale is about 12 miles southeast of Moapa and Overton is about 5 miles southeast of Logandale. The population of the census-designated place, which does not include Moapa, was 5,784 at the 2000 census, and was estimated to be 6,984 in 2006. Moapa Valley apartments for rent comparison page shows most up to date rent information on Moapa Valley apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.