more to do on our rivers than swim -- though with some of these activities, you'll likely end up getting soaked anyway. Feeling adventurous? Try whitewater rafting on the Ottawa River with OWL Rafting . Whether you're after an activity the whole family will enjoy or an adrenaline-pumping two-day outing, OWL offers something at every skill (and thrill) level. Additionally, sister company Madawaska Kanu Centre offers kayak and canoe instruction and excursions. If you don't want to venture too far out of town, check out their MKC in the City program, which operates from the Pump House in downtown Ottawa. For something a little tamer (and most certainly drier), head to Dows Lake Pavilion where you can rent a kayak, canoe, or pedal boat and explore the lake and the Rideau Canal from a unique vantage point. Calypso Theme Waterpark SLIP AND SLIDE Did you know that Canada's biggest theme waterpark can be found half an hour east of downtown Ottawa? Award-winning Calypso Theme Waterpark draws hordes of water lovers to its 100-acre park every summer, and with more than 35 state-of-the-art water slides, over 100 water games, Canada's largest wave pool, a 750m river run, and lots more, it's not hard to see why.  One of the park's most impressive attractions is the Summit Tower, North America's highest freestanding waterslide tower.  The structure holds ten slides, including two AquaLoops, in which riders begin standing upright in an enclosed cabin with a trap door, which then drops from beneath them