Colorado Revised Statutes Title 30. Government County § 30-5-120. Douglas

Beginning at the intersection of the center of the South Platte River with the first standard parallel south; thence east on said parallel to its intersection with the eastern boundary of the western half of range sixty-five west; thence south on said eastern boundary to its intersection with the south line of township ten south; thence west on said township line to its intersection with the center of the South Platte River; and thence northeasterly along the center of said river to the place of beginning. Said public land survey lines are based upon the sixth principal meridian.