On hot summer days, people swim in Upper Waterton Lake. Keep in mind that the lake is very cold, drops off quickly and is subject to strong winds. Emerald Bay (in the community) is the most popular spot for swimming. The beach near the Townsite campground is also used but tends to be windier. The Marquis Hole picnic site along the Waterton River is also a popular spot for swimming. Be aware that "swimmer's itch", a small parasite that causes itching and irritation, is present in some smaller water bodies, particularly Linnet Lake.
Explore the natural wonders of Middle Waterton Lake while wandering through the driftwood piles on the shoreline, deposited by the prevailing winds from the south.
The pool at the Waterton Lakes Lodge is accessible for public use.