The Spray River is a tributary of the Bow River in western Alberta, Canada. The Spray River originates in the southern area of Banff National Park in the Canadian Rockies and soon enters the Spray Lakes Reservoir formed in 1951 after the construction of the Canyon Dam. At that point, the river briefly touches the Spray Valley Provincial Park before returnin…The Spray River is a tributary of the Bow River in western Alberta, Canada. The Spray River originates in the southern area of Banff National Park in the Canadian Rockies and soon enters the Spray Lakes Reservoir formed in 1951 after the construction of the Canyon Dam. At that point, the river briefly touches the Spray Valley Provincial Park before returning to Banff National Park.