Upper Otter Point Creek includes all waters of Otter Point Creek and its tributaries upstream of a line beginning at a point at or near Lat. 39° 26.665’ N., Long. 76° 16.422’ W., then running 280° (True) to a point, at or near Lat. 39° 26.725’ N., Long. 76° 16.848’ W. Upper Otter Point Creek shall have an all time idle speed limit for personal watercraft.