N.Y. Comp. Codes R. & Regs. tit. 21, § 890.1 – Reduce water use.

(a) reducing the likelihood of severe low stream flows that can adversely affect fish and wildlife resources and recreational enjoyment;
(b) assisting in the maintenance of good water quality by provision of minimum dilution flows and repulsion of salinity; and
(c) deferring the need for construction of new storage reservoirs and other water supply structures.

The commission will undertake a long-range continuing program to reduce water use throughout the basin for the purposes of: