C.R.S. § 37-87-114.5

(1) The provisions of sections 37-87-105 to 37-87-114 shall not apply to: (a) Structures not designed or operated for the purpose of storing water; (b) Mill tailings impoundment structures permitted under article 32 or 33 of title 34, C.R.S.; (c) Uranium mill tailings and liquid impoundment structures permitted under article 11 of title 25 , C.R.S.; except that the state engineer shall render such consultation as necessary for the permitting of such structures; (d) Siltation structures permitted under article 33 of title 34 , C.R.S.; or (e) Structures which store water only below the elevation of the natural surface of the ground.