I agree with Buck, went through this exercise a couple of years ago querying whether there was an issue with floating a stream/river/pond with posted shorelines. If the land under the water is privately owned, you cannot anchor or otherwise touch bottom. Avoid that and you are free to traverse the waterway. Another facet to this is to inspect the actual property parcels in town records to see if the land under the water is private or public. Tried for Pierrepont Pond but Ridgefield parcels are not available online. Found by examining town property records the Shetucket and Farmington riverbeds are public land, so you can wade or float through posted areas so long as you stay off the edges of posted parcels and enter or exit via public road crossovers.