N.Y.C. Admin. Code § 24-325: § 24-325 City to erect and maintain fences to protect certain water works.

The city, at its own expense, shall erect and maintain all fences needed to protect the works upon the lands taken by the city in the county of Westchester for water supply purposes by virtue of chapter two hundred fifty-six of the laws of eighteen hundred thirty-four. It shall also erect and maintain, at its own expense, convenient passes under or across the Croton aqueduct, for farming and other uses of individually owned lands in such county intersected by such aqueduct.