Section 41-5-109 - Construction of acts(a) Nothing in this chapter contained, shall be so construed as to impair the prior vested rights of any mill or ditch owner, or other person, to the use of any such watercourse. (b) This chapter shall in no wise be construed as impairing or abridging any rights already vested in any person or persons, company or corporation by virtue of the law heretofore in force.