An Act to amend the Act approved August 18, 1970, providing for improvement in the administration of the National Park System by the Secretary of the Interior and clarifying authorities applicable to the National Park System, and for other purposes.

[AI summary unavailable — showing source text] Authorizes the Secretary of the Interior to: (1) promulgate and enforce regulations concerning boating and other activities relating to waters located within the National Park System; and (2) provide such meals and lodging as is deemed appropriate for members of the United States Park Police and other employees of the National Park Service serving on extended duty. Authorizes the Secretary to pay moving expenses of dependents of deceased National Park System employees who at their last permanent Stations were assigned specified government housing in isolated areas when the death of such employees necessitates the prompt vacation of such housing. Allows the Secretary to relinquish to a State or to a Commonwealth, territory or possession of the United States all or part of Federal legislative jurisdiction over National Park System lands. Extends the existence of the Advisory Board on National Parks, Historic Sites, Buildings, and Monuments through 1989. Revises provisions relating to law enforcement within the National Park System. Specifies the powers of Department of Interior law enforcement personnel. Empowers the Secretary to designate officers and employees of other Federal agen…