R.I. Const. art. I, § 16

Private property shall not be taken for public uses, without just compensation. The powers of the state and of its municipalities to regulate and control the use of land and waters in the furtherance of the preservation, regeneration, and restoration of the natural environment, and in furtherance of the protection of the rights of the people to enjoy and freely exercise the rights of fishery and the privileges of the shore, as those rights and duties are set forth in Section 17, shall be an exercise of the police powers of the state, shall be liberally construed, and shall not be deemed to be a public use of private property.