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.