Yeah, call the wetlands or land use officer for the town. If they have one (some towns give wetlands enforcement to a town employee as an "additional" duty), they'll send him/her over. This is definitely something that would require a permit.

And, just cause you own the property doesn't mean you can do what you want it. Generally towns have a law that requires a permit within so many feet of a wetland. The distance varies by town. But it would definitely include doing something within the wetland. Having a bulldozer actually in the wetland clearly qualifies.

Bass Ackwards probably has it right, I know the fence line is right at the edge of of the parking lot, and runs right to the waters edge in the cove. From looking at these pictures, that would mean that when the water is out he definetly was on his land, and possible, so was OHmyGod. That fence line goes right thru the center of the cove, I know because I have fished it often. Another fly in the ointment of your arguement is that Rainbow rez is a man made body of water, (hence the Reservoir name), and falls under many different rules than does a natural lake. My understanding is that the "pond" as it's called by the operators of the Rainbow Power plant, is actually owned by The Farmington River Power Company, and they donated the land for the boat ramp out of the goodness of their hearts. I think that is why they can regularly screw up our fishing there, by draining "the pond", without any apparent retribution from the DEP. That does FAR more to screw up our fishing, than some guy fixing up his beach a little. I have noticed that each time they have done this, (about 8 times in the last six years, the fishing there sucks for the next year!

OMG - Call the Dock permitting section of the DEP - it is listed on the first page of DEP web site. There will be one or more permtting officers responsible for that district who will be very interested in this . Get the officers name plus email address, email your pictures, property address, GPS location if you can.
If the guy does not have a permit he could get a massive fine and have to pay for remidiation.

The DEP dock permitting dept will act on this right away.

I just don't see the big concern. It looks all dried up what ever was there couldn't be alive anymore And it couldn't have been very deep when there was water in it. It looks like a improvement to me.

I think this guy could have avoided a lot of this speculation if he had just taken a minute to tell OMG what he was doing. I know he is not obligated, but his response and the manner in which he gave it only leads one to think he may be doing something he is not supposed to. In short, sometimes being a jerk, just because you have the ability to be one, isn't worth it. I can appreciate his desire for privacy, but when you're behavior is open to public observation, people ask questions. Have some patience.