[Code of Federal Regulations]
[Title 33, Volume 3]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 33CFR329.13]

[Page 470-471]
 
                TITLE 33--NAVIGATION AND NAVIGABLE WATERS
 
 CHAPTER II--CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF 
                                 DEFENSE
 
PART 329_DEFINITION OF NAVIGABLE WATERS OF THE UNITED STATES--Table of 
 
Sec.  329.13  Geographic limits: Shifting boundaries.

    Permanent changes of the shoreline configuration result in similar 
alterations of the boundaries of the navigable waters of the United 
States. Thus, gradual changes which are due to natural causes and are 
perceptible only over some period of time constitute changes in the bed 
of a waterbody which also change the shoreline boundaries of the 
navigable waters of the United States. However, an area will remain 
``navigable in law,'' even though no longer covered with water, whenever 
the change has occurred suddenly, or was caused by artificial forces 
intended to produce that change. For example, shifting sand bars within 
a river or estuary remain part of the navigable water of the United 
States,

[[Page 471]]

regardless that they may be dry at a particular point in time.