[Code of Federal Regulations] [Title 33, Volume 3] [Revised as of July 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR329.4] [Page 458] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER II--CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY PART 329--DEFINITION OF NAVIGABLE WATERS OF THE UNITED STATES--Table of Contents Sec. 329.4 General definition. Navigable waters of the United States are those waters that are subject to the ebb and flow of the tide and/or are presently used, or have been used in the past, or may be susceptible for use to transport interstate or foreign commerce. A determination of navigability, once made, applies laterally over the entire surface of the waterbody, and is not extinguished by later actions or events which impede or destroy navigable capacity.