It is hereby made the duty of the Wyoming state engineer, water division superintendents, water commissioners and deputy water commissioners, to supervise the delivery of such foreign water from the state boundary line where it enters the state of Wyoming in a natural stream channel, to the point of diversion in Wyoming; any additional expense of this supervision shall be borne by the owners of such foreign water as decided by the water officials of the state of Wyoming.
W.S. 41-3-204