Ontario Trails Council
Great resource for canoeing and kayaking in the Niagara Region.
Website: http://www.ontariotrails.on.ca/trail-regions/niagara
Niagara Kayak Rentals
Kayak rentals in Niagara-on-the-Lake. They are a mobile Kayaking service, meaning they meet you at the launch site of your choice and provide you with everything you need including a tutorial on safety and basic kayaking instructions. They even pick you up down river! All you have to do is show up. Their friendly and knowledgeable staff will help you with everything you need to be in the water paddling.
Website: http://www.niagarakayak.com/