1990 年 25 巻 p. 133-138
TOYOGAWA IRRIGATION PROJECT IS ONE OF THE MOST FAMOUS PROJECTS IN JAPAN. AND THE WATER SUPPLY BY IT CHANGES THE IRREGATED AREA TO THE TOP OF HIGH AGRICULTURAL AREA IN JAPAN. THE POUROSE OF THIS PAPER IS TO DEFINE THE CHANGES OF WATER USE AND LAND USE IN TOYOGAWA IRRIGATION AREA AND TO SUGEST THE FRAME OF WATER USE PLANNING RELATED WITH LAND USE ON THE CASE STUDY OF TOYOGAWA IRRIGATION AREA.