The Deben is a river in Suffolk, flowing through Woodbridge. Whilst the inland river is small and pleasant, it is the estuary which is famous as a place to go canoeing or kayaking.
The length of the estuary makes for a nice day, using the tides to get from one end to the other. Obviously, canoeists need to be aware of the tide, currents and wind that may be found on the estuary, and have enough experience to deal with them.
There may be seals swimming alongside you, and there will definitely be some fantastic birdlife to watch and to hear.