It is the largest lake on the Rideau Canal, which was designated a UNESCO world heritage site in 2007.

A public recreation area and campground, Murphys Point Provincial Park, is located along a substantial stretch of the shoreline on the northern side of the lake.

The BRLA places private shoal markers throughout the lake, marking hazards underwater at some times in the navigational season.

Admiral Sir Charles Kingsmill, who played a role in founding the Royal Canadian Navy, loved sailing on the lake,[5] and had a summer house on Grindstone Island.

The International Big Rideau Lake Speed Skating Marathon is an annual event.