Declining rainfall and a 34 per cent drop in water flow results in increased management measures put in place around the major food-producing town Gingin north of Perth. Declining rainfall and a 34 per cent drop in water flow results in increased management measures put in place around the major food-producing town Gingin north of Perth. Water, Agricultural Crops, Droughts, Weather, Horticulture, Water Supply, Agribusiness, Climate Change, Local Government Latest business news