N.Y. Comp. Codes R. & Regs. tit. 6 § 601.24
The New York major drainage basins in section 601.2(j) of this Part were derived from an update of the United States Geological Survey's (USGS's) Hydrologic Unit Codes (HUCs). The updated HUCs were prepared by United States Department of Interior-USGS, the United States Department of Agriculture-Natural Resources Conservation Service (NRCS), and the United States Environmental Protection Agency. The resulting Watershed Boundary Dataset (WBD) has been made available from the NRCS Data Gateway by free download (as of November 2012 at the following web address: http://datagateway.nrcs.usda.gov/). The department downloaded the WBD from the NRCS Data Gateway on June 17, 2011 and utilized the data to prepare a map displaying the New York State major drainage basins and their respective HUCs. The department's map, entitled 'NYS Major Drainage Basins" and dated October 2012, is available from and published by the New York State Department of Environmental Conservation, 625 Broadway, Albany, NY 12233 and is on file at the New York State Department of Environmental Conservation Central Office and all regional offices and sub-offices. It is also available on the department's website (as of November 2012 at the following web address: http://www.dec.ny.gov/lands/56800.html).
N.Y. Comp. Codes R. & Regs. Tit. 6 § 601.24