N.Y.C. Admin. Code § 5-426: § 5-426 Approval of maps and plans by the New York state department of environmental conservation.

The city shall have no power to acquire, take or condemn lands under this subchapter unless maps and plans covering the work contemplated by this subchapter shall have been submitted to and approved by the New York state department of environmental conservation or any of its predecessors. All amendments or modification of such maps and plans thereafter made shall be in like manner submitted to and approved by such department, and when so approved, shall have the same force and effect as the original plans filed therewith.