The regulating district shall by resolution determine the apportionment date. The value, condition and ownership of parcels of real estate benefitted by the operation of the reservoir shall be determined as of the apportionment date. Unless directed to modify the apportionment by the department, the regulating district may not unilaterally modify the apportionment until after the conclusion of the apportionment grievance hearing.
N.Y. Comp. Codes R. & Regs. Tit. 6 § 606.127