I asked DEP that same question pertaining to wading or Kayaking.

"Riparian law in Connecticut is different from most other places. By default you are trespassing on all private property if you have not gotten prior land owner approval. In addition, In Connecticut the landowners own the stream bottom ....... If you are wading and enter a new owners property- you are trespassing. The boating is a little more hazing. Some rivers are Navigable and depending on whose definition of Navigable you use makes a big difference. since the state owns the water people argue they should be able to canoe through a river "over" the private stream bottom. In practice I have heard of many people who have been cited for trespassing for doing this. If you have to get out a boat to portage, it drags the bottom etc you would be technically trespassing. Also, Landowners can put up fences etc across the stream to further block access down a river." Neal Hagstrom