In any case where the United States has built or shall build a levee along or near the bank of a navigable stream forming a part of the boundary of this state, the board of supervisors of any county through which the same may pass shall have the power to aid in procuring the right-of-way for and maintaining said levee, and providing a system of internal drainage made necessary or advisable by the construction thereof. Such improvement shall be presumed to be conducive to the public health, convenience, welfare, or utility.
89 Acts, ch 126, §2
CS89, §468.390