Mass. Gen. Laws ch. 253 § 46A
When a dam has been deemed safe, removed, repaired or constructed pursuant to an order of the commissioner; or a dam has been evaluated, constructed, repaired or altered to the satisfaction of the commissioner under a properly issued permit, the commissioner shall issue a certificate of compliance to the owner approving the dam or the safe removal of the dam but subject to such terms and conditions, if any, as the commissioner deems necessary for the protection of life and property or such terms and conditions, if any, as the commissioner, in consultation with the commissioner of fish and game, deems necessary for the protection of the environment. Such certificate shall be recorded by the owner in the registry of deeds in the county where the dam lies.
Mass. Gen. Laws ch. 253, § 46A