THE PROGRESS OF URBANIZATION IS CONSPICUOUS IN RECENT YEARS IN JAPAN. ACCOMPANY PEOPLE AND INDUSTRY ASSEMBLED IN THE CITY, THE LACK OF URBAN FACILITIES AND THE RESIDENTIAL QUARTER HAVE BEEN CAME TO AHEAD. AS THE RESULT, THE WATER AREAS IN THE CITY ARE FILLED IN, AND THE SITE FOR THEM ARE BUILT UP. THEN WE TRY TO CLARIFY THE REASON A DECREASE OF THE WATER AREAS AND THE PROCESS OF THE VANISHING OF THEM.
