The following points must be located by course and distance from a corner of the public land survey:
a. The head gate (point of diversion) of a ditch or other facility;
b( The point of starting of an extension or enlargement;
c. The outlet of a reservoir, which is defined as the point where the center line of the top of the dam intersects the center line of the outlet conduit.
037-7 Wyo. Code R. § 7-4