The river regains some water from Goat Creek and other smaller tributaries before arriving at the town of Banff.

Meanwhile most of the Spray River's water exits the reservoir through the secondary Three Sisters Dam where there is a small 3MW generating station.

From there it immediately enters a secondary reservoir known as the Goat Pond which directs the water into a 6 kilometre long canal which includes an 800 meter tunnel though the shoulder of Ha Ling Peak.

From there it enters White Man Pond before being funnelled into a penstock to the main Spray Powerhouse at Grassi Lakes.

The Spray Powerhouse is the second largest conventional (non Pumped-storage) hydroelectric facility in Alberta with a capacity of 112MW.