(1) In Broadwater County the Missouri River is closed to all swimming, boating, sailing and floating in the following areas:
(a) between Toston dam and 300 feet downstream of the dam; and
(b) the reservoir between the Toston dam and the boat barrier.
(2) In Cascade County the Missouri River:
(a) is closed to the use of motorized watercraft from the Burlington Northern Railway Bridge No. 119.4 at Broadwater Bay in Great Falls to Black Eagle; and
(b) is limited to a controlled no wake speed, as defined in ARM 12.11.101, 200 feet from the western shore as buoyed from the Warden Bridge on 10th Avenue to the Burlington Northern Railway Bridge No. 119.4 from May 1 to September 30.