Lake Havasu the lower Sonoran Desert and its Californian Colorado Desert ecoregions. The Havasu National Wildlife Refuge is located at the upper end and upriver. Lake Havasu State Park is along the eastern shore in Arizona. The Bill Williams River National Wildlife Refuge extends southeastward up the riparian zone of the Bill Williams River canyon from the southeastern end of the reservoir and dam. Lake Havasu is well known for its recreational fishing and boating, which bring in around 750,000 visitors a year. Fishing tournaments are often held on the lake, where bass are the main catch. Fish list : Largemouth bass,
Lake Havasu City, Arizona °F (16 °C) to 70 °F (21 °C). Lows in winter average between 40 °F to 50 °F (4 °C-10 °C); temperatures do occasionally dip below 40 °F (4 °C). The city has extremely hot summers, with highs normally remaining between 100 °F and 115 °F (38 °C - 46 °C). Highs are known to exceed 120 °F (49 °C) during the summer months. Overnight low temperatures stay between 80 °F to 90 °F (27 °C - 32 °C) for the months of July and August. The highest overnight low temperature (record high minimum) ever recorded in Lake Havasu City