1An order may provide—
(a)for the imposition, collection and recovery by a water authority of contributions assessed on several fisheries regulated by the order or on the owners and occupiers of such fisheries ;
(b)for enabling the water authority with the approval of the Minister, but subject to paragraphs 2 and 3 below, to erect and work by themselves or their lessees any fixed engine for catching salmon or migratory trout within the area within which the order is to apply ;
(c)for modifying in relation to the fisheries within the area any of the provisions of this Act which relate to the regulation of fisheries, or of any local Act relating to any fishery within the area.