UL Bend National Wildlife Refuge is a 56,048 acres (22,682 ha) protected area that is located in central Montana, United States. The refuge, located at the extreme southernmost tip of Phillips County, is managed and bordered on three sides by the Charles M. Russell National Wildlife Refuge and the Fort Peck Reservoir on the Missouri River. The UL Bend Wilderness comprises almost half the refuge and provides a high level of protection to the most remote regions. This refuge is remote, requiring travel by gravel and dirt roads that can be difficult to navigate during inclement weather. A large population of bighorn sheep, elk, pronghorn and mule deer inhabit the refuge.