Colorado Revised Statutes Title 30. Government County § 30-5-126. Gilpin

Beginning at the confluence of the center of North Clear Creek with the center of Clear Creek; thence due north to the center of South Boulder Creek; thence up the center of South Boulder Creek to where it intersects the monumented survey line between Gilpin and Boulder counties; thence due west along said monumented survey line to the crest of the continental divide; thence southerly on the continental divide to its intersection with the dividing ridge between North Clear Creek and Clear Creek drainage basins; and thence southeasterly along said ridge to the place of beginning.