Havasu National Wildlife Refuge operate and maintain the refuge facilities and programs by providing volunteer labor. Havasu National Wildlife Refuge Havasu National Wildlife Refuge is a U.S. National Wildlife Refuge on the lower Colorado River in Arizona and California. It preserves habitat for desert bighorn sheep to the endangered southwestern willow flycatcher, birds and other animals. The refuge protects 30 river miles - of shoreline - from Needles, California, to Lake Havasu City, Arizona. One of the last remaining natural stretches of the lower Colorado River flows through the Topock Gorge. Animal species that inhabit this refuge include peregrine falcon, coyote, fox, desert bighorn
Havasu Creek enters Cataract Canyon (also known as Havasu Canyon). It then reaches Havasu Springs, where an underground source feeds the creek. This spring can be accessed by heading upstream when the creek is first encountered. The water stays at about 70 °F (21 °C) all year around. The creek is well known for its blue-green color and distinctive travertine formations. This is due to large amounts of calcium carbonate in the water that formed the limestone that lines the creek and reflects its color so strongly. This also gives the creek an interesting feature, as it is ever-changing. This occurs because