N.Y. County Law § 280-n

§ 280-n. Powers. The administrative head or body upon authorization\nfrom the governing body may acquire in the name of the county by gift,\nlease, purchase or condemnation, real estate and easements, rights of\nway or other interests therein necessary or proper for the purposes of\nthe district. It may (1) construct or reconstruct dunes, bluffs,\nbulkheads, dikes, groins, jetties, fills and other works and\nimprovements upon such lands, or (2) provide for the acquisition,\nconstruction, operation and maintenance of all facilities and appliances\nnecessary to effectuate the purposes of this article.\n