From there it enters White Man Pond before being funnelled into a penstock to the main Spray Powerhouse at Grassi Lakes with a generating capacity of 112 MW.

The water continues to another shorter penstock leading to the Rundle Powerhouse where an additional 50 MW of generation is available.

For more than half of the lake, from the Three Sisters Dam in the north to Mount Buller in the south, the western border of the Bow Valley Wildland Provincial Park runs along the Smith-Dorrien Trail, close to the eastern shore.

For the whole length of the lake, the eastern border of Banff National Park lies within five kilometers of the western shore.

The western shore is paralleled by hiking trails, and picnic sites and campgrounds are set up on both sides of the lake.