The Mattabesset River is a great trip to take the canoe or kayak out on. There is a launch to the right of the Dunkin Donuts on Rt 3 in Cromwell. One thing to keep in mind is the tides. The water can get very shallow during low tide, but it is still navigable with a canoe or kayak. The current is very slow going out & coming in, but if you catch it right, you can just drift with the current and not have to do much paddling at all. The fishing is decent (you can check out my trip that I posted also). I saw a couple small trout when the water level was low. I also saw a couple Great Blue Herons (I think that's what they were) and hundreds upon hundreds of Red-winged black birds. I have heard that there are some BIG Pike in this River as well.