(1) The State Government may, having regard to the resources of land and water, nature of soil, climate and other technical considerations, by order, specify for each Command Area, the principles of localisation for the purpose of irrigation.
(2) The State Government may, having regard to the advancement in technology of land and water management and other agronomic practices alter from time to time by order the principles of localisation so specified for any Command Area.
Section 18 - Classification of lands for raising different crops according to availability of water
(1) Subject to such directions as may be issued, from time to time by the State Government, the Authority or the officer authorised by the Authority may, in any year, having regard to the quantity of water available in any irrigation system within its jurisdiction, classify, by an order, within such time and in such manner as may be prescribed lands included in the irrigation system under a pipe-outlet for the purpose of raising such kind of crops under such pipe-outlet as may be specified in the order to regulate the supply of water for irrigation.
(2) Whenever the Authority is satisfied that for the better cultivation of land and the optimum utilisation of water resources of an irrigation system under a pipe-outlet or for accelerated land development or for any other reasons it is expedient in public interest, the Authority may, by notification, specify the cropping pattern, the period of sowing, the duration of crop, and the kinds of crops that shall not be grown on any land under such irrigation system under a pipe-outlet.
(3) On the publication of a notification under sub-section (2), no person shall grow or allow to grow any prohibited crop on any land under the irrigation system under a pipe-outlet and no person shall sow or plant or allow the sowing or planting of any other crop at any time other than the period, or allow such crop to remain beyond the duration, specified in respect thereof in such notification.
Section 19 - Stoppage of water supply
The supply of water to any land which is entitled to such supply under section 17 or 18 shall not be stopped except,-
(a) whenever and so long as it is necessary to stop such supply for the purpose for executing any work ordered by the Authority;
(b) whenever and so long as any field-channel by which such supply is received, is not maintained in such repair as to prevent the wasteful escape of water thereof;
(c) whenever and so long as it is necessary to do so in order to supply in rotation the legitimate demands of land holders entitled to water;
(d) whenever and so long as it may be necessary to do so in order to prevent the wastage or the misuse of water;
(e) within the periods fixed from time to time by the Authority, of which, due notice shall be given; and
(f) whenever there is diminution in the supply of water in the irrigation work due to any natural or seasonal causes and so long as it is necessary to do so.