Section 16A(2) in The Bengal Tanks Improvement Act, 1939
(2)Every person possessing agricultural land within the maximum irrigation area shall, subject to the provisions of sub-sections (3) and (4), be liable to pay a fee annually during the period of possession to the authorised person at the rate fixed and in the manner provided under section 17 and such liability shall not cease by reason of such person not using water for irrigation purposes from the tank to which the maximum irrigation area relates.