Although you can (technically) see waterfalls in 14 of the 18 canyons, some of the most scenic waterfalls are found in St. Louis, French, Wildcat, Tonty, Ottawa and Kaskaskia canyons. The best times to see waterfalls are in the spring when the snow and ice melt or after a heavy rainfall.
Winter brings a whole new life to the canyons. The freezing and melting that happens during this time of year creates amazing ice sculptures in the canyons. Make sure you come back in the winter to see an icefall – they are spectacular!