Title 16 › CHAPTER 23 — NATIONAL WILDERNESS PRESERVATION SYSTEM › § 1131
Congress set up the National Wilderness Preservation System to keep some federal lands wild for people now and in the future. It requires that certain federal areas be kept natural for public use and enjoyment, protected so they stay wild, and studied with information shared about how they are used. Only Congress can officially name federal land as a "wilderness area" under this law or a later law. Areas added keep being run by the same federal department or agency that managed them before, unless Congress says otherwise. No separate federal money is provided just for running the System as its own unit, and no extra pay or staff funds are allowed only because an area is inside the System. A "wilderness" means undeveloped federal land with no permanent buildings or homes, where nature largely shapes the place and people are visitors. It generally must: be mostly influenced by natural forces; offer solitude or primitive, unconfined recreation; be at least 5,000 acres or big enough to stay unspoiled; and it may have special natural, scientific, scenic, or historic features.
Full Legal Text
Conservation, Source: USLM XML via OLRC
Legislative History
Reference
Citation
16 U.S.C. § 1131
Title 16, Conservation
Last Updated
Sep 22, 2026
Release point: 119-110