Colo. Rev. Stat. § 30-5-136
Beginning at the point on the continental divide from which the Tenmile Range departs northerly; thence on a due west line to its second intersection with the continental divide; thence westerly and then southerly along the continental divide to its intersection with the section line lying one mile north of the south line of township eleven south; thence east on section lines to an intersection with the range, known as the Mosquito Range, dividing the waters of the Arkansas and South Platte rivers; thence northerly along the crest of said range to its intersection with the continental divide; and thence northeasterly along said divide to the place of beginning. Said public land survey lines are based upon the sixth principal meridian.
C.R.S. § 30-5-136