Big Whiteshell Lake has two boat launch sites along Highway 309, approximately 66 kilometres from Seven Sisters — one at the South Shore Campground and one at the end of Highway 309. Both are located within Whiteshell Provincial Park.

The lake itself covers roughly 17. 5 km² and reaches a maximum depth of about 11 metres, making it suitable for a range of watercraft. Target species include Walleye, Northern Pike, Yellow Perch, and Black Crappie.

The lake is large enough to accommodate water skiing, tubing, and wakeboarding in addition to fishing. A public boat launch also sits adjacent to a private resort on the lake, giving boaters multiple access options.