N.Y. Comp. Codes R. & Regs. tit. 10, § 128-10.1
(a) The watershed area for the New York City water supply lies in the parts of the following counties and towns that are delineated on Map 128-A.1:
(b) The watershed areas for the New York City water supply that lie within the 60-day travel time to intake are delineated on Map 128-A.2
(d) Detailed maps of each area within the 60-day travel time to intake are available at the New York State Department of Health and the regional offices listed in section 128-1.5 of this Part.