64.31—Determination of hazard to navigation.
In determining whether an obstruction is a hazard to navigation for the purposes of marking, the District Commander considers, but is not limited to, the following factors:
(a)
Location of the obstruction in relation to the navigable channel and other navigational traffic patterns;
(c)
Depth of water over the obstruction, fluctuation of the water level, and other hydrologic characteristics in the area;
(d)
Draft, type, and density of vessel traffic or other marine activity in the vicinity of the obstruction;
(k)
Whether the obstruction is defined as a hazard to navigation under other statutes or regulations.