The supply of water to any water course or field channel or to any person who is entitled to such supply shall not be stopped except––
(a) whenever, and so long as, it is necessary to stop supply for the purpose of maintenance of an irrigation work or for execution of any work ordered by the competent 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 song as, it is necessary to do so in order to supply water in rotation to the legitimate demands of other persons entitled to water ;
(d) whenever, and so long, as it may be necessary to do so in order to prevent the wastage or misuse of water ;
(e) within the periods fixed from time to time by the Assistant Executive Engineer of which due notice shall be given ;
(f) whenever there is decrease in the supply of water in the irrigation work due to any natural or seasonal cause and so long as it is necessary to do so ; and
(g) for any reasons beyond the control of the Department.