(a) No person shall construct, enlarge, raise, lower, remodel, reconstruct, or otherwise alter any nonfederal dam, pond, or impoundment or other structure that is or will be capable of impounding more than 500,000 cubic feet of water or other liquid after construction or alteration, or remove, breach, or otherwise lessen the capacity of an existing nonfederal dam that is or was capable of impounding more than 500,000 cubic feet within or along the borders of this State where land in this State is proposed to be overflowed, or at the outlet of any body of water within this State, unless authorized by the State agency having jurisdiction so to do. However, in the matter of flood control projects where cooperation with the federal government is provided for by the provisions of section 1100 of this title, that section shall control.

(b) For the purposes of this chapter, the volume a dam or other structure is capable of impounding is the volume of water or other liquid, including any accumulated sediments, controlled by the structure with the water or liquid level at the top of the lowest nonoverflow part of the structure.

(c) An intake structure in existence on July 1, 2018 that continues to operate in accordance with a valid Department permit or approval that contains requirements for inspection and maintenance subject to section 1105 of this title shall have a rebuttable presumption of compliance with the requirements of this chapter and rules adopted under this chapter, provided that no presumption of compliance shall apply if one or both of the following occur on or after July 1, 2018: