Neb. Rev. Stat. § 37-441: Neb. Rev. Stat. § 37-441

The commission shall evaluate the areas of the Nebraska state park system and designate those areas, or portions of areas, for which a permit shall be required. The commission shall periodically reevaluate the Nebraska state park system and designate additional permit areas or reclassify permit areas as nonpermit areas as conditions and public use warrant.