Pilots are requested to maintain a minimum altitude of 2,000 AGL above the following: National Parks, Monuments, Seashores, Lakeshores, Recreation Areas and Scenic Riverways administered by the National Park Service, National Wildlife Refuges, Big Game Refuges, Game Ranges and Wildlife Ranges administered by the U.S. Fish and Wildlife Service, and Wilderness and Primitive areas administered by the U.S. Forest Service.

While this minimum altitude is requested above National Wildlife Refuges, it’s worth noting that Federal statutes prohibit certain types of flight activity and/or provide altitude restrictions over certain designated U.S. Wildlife Refuges, Parks, and Forest Service Areas such as Boundary Waters Canoe Wilderness Areas, Minnesota; Haleakala National Park, Hawaii; Yosemite National Park, California; and Grand Canyon National Park, Arizona, which are charted on Sectional Charts.

The guidance is published in the AIM, Paragraph 7-5-6.