Arapaho National Forest is a National Forest located in north-central Colorado, United States. The facility is managed jointly with the Roosevelt National Forest and the Pawnee National Grassland from the United States Forest Service office in Fort Collins, Colorado. It has a wildlife refuge which manages a protection for all birds and mammals. The combined facility of 1,730,603 acres (7,004 km2) is denoted as ARP (Arapaho, Roosevelt, Pawnee) by the Forest Service. Separately, Arapaho National Forest consists of 723,744 acres (2,929 km2).