161. The modification or regularization of rivers provided for in section 160 is, however, in Category I lands, subject to the following rules:(a) the flow regime shall not be modified in such a way as to raise the water level of a river above the highest previously recorded water level of this river;
(b) for the purposes of establishing or maintaining, in Category I lands, the services listed in sections 126 and 138 which are of direct benefit as contemplated in section 133, the water level of the rivers may be raised above the highest recorded level;
(c) if shore facilities or other installations or rights connected therewith are affected by the change of water level the Government and the bodies mentioned in section 160 shall be liable for damages to such facilities, installations or rights connected therewith.