Havasu Wilderness Havasu Wilderness Havasu Wilderness is a wilderness area located within the Havasu National Wildlife Refuge near Lake Havasu in the U.S. states of Arizona and California. are located in Arizona and are located in California. The western boundary of the Wilderness is formed by the Colorado River. The area includes volcanic spires, a large sand dune with vegetation varying from riparian wetlands to Mojave Desert uplands. The habitats here consist of open water, emergent vegetation, subaquatics, dry mountains, desert uplands and washes. Vegetation in Havasu Wilderness is dominated by creosote bush, ocotillo, blue-green paloverde, and pockets of saguaro. A variety
US 31–Island Lake Outlet Bridge part of the National Highway System. Island Lake Outlet, also known as the Pine River Channel, was dredged in 1870 to connect Lake Michigan to Lake Charlevoix through Round Lake. A total of five bridges have crossed the channel at this location; the first was a small footbridge built in 1869. The current bridge replaced a swing truss bridge built by the city of Charlevoix in 1901. The US 31–Island Lake Outlet Bridge was designed by the bridge division of the Michigan State Highway Department, led by George M. Foster, and by consulting engineers Haslett and Erdal. Plans were prepared