[Code of Federal Regulations] [Title 36, Volume 3] [Revised as of July 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 36CFR331.21] [Page 33] TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY CHAPTER III--CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY PART 331--REGULATIONS GOVERNING THE PROTECTION, USE AND MANAGEMENT OF THE FALLS OF THE OHIO NATIONAL WILDLIFE CONSERVATION AREA, KENTUCKY AND INDIANA--Table of Contents Sec. 331.21 Unauthorized structures. The construction, placing, or continued existence of any structure of any kind under, upon, in, or over WCA lands or waters is prohibited unless a permit, lease, license, or other appropriate written agreement therefor has been issued by the District Engineer. Structures not so authorized are subject to summary removal or impoundment by the District Engineer. The design, construction, placing, existence, or use of structures in violation of the terms of the permit, lease, license, or other written agreement therefor is prohibited.