https://www.seacoastonline.com/news/...-near-wetlands
RSA 482-A:3 Excavating and Dredging Permit; Certain Exemptions. –
I. (a) No person shall excavate, remove, fill, dredge, or construct any structures in or on any bank, flat, marsh, or swamp in and adjacent to any waters of the state without a permit from the department. Unless otherwise specified in rules adopted by the commissioner pursuant to RSA 482-A:11, any person seeking to obtain a permit shall submit to the department:
http://www.gencourt.state.nh.us/rsa/...-A/482-A-3.htm