The Trent-Severn is a 386-kilometre canal system running from Lake Ontario at Trenton to Georgian Bay at Port Severn. The middle section threads through the heart of Kawartha Lakes, with locks at Bobcaygeon (Lock 32), Fenelon Falls (Lock 34), and several smaller stops between.
The locks were built in the 19th century to move logs and goods, but the canal was overtaken by the railways before it was finished and now carries almost only pleasure traffic. Operated by Parks Canada, it is open from May to October. The lockside parks are some of the prettiest public spaces in the region.