木曽川水系における明治改修までの河川計画の歩み
主として治水計画について
1988 年 97 巻 2 号 p. 80-90
詳細
1988 年 97 巻 2 号 p. 80-90
The Kiso River basin is located in a central part of Japan and covers one of the greatest and most active area in both social and economical sense.
The Kiso River basin has three main streams, that is the Kiso, the Nagara and the Ibi River. From old days. these three main streams has mutual connection to each other through many tributories, and had an intimate relation by causing submersion damage from one stream to the others. Division of these three river channels had been considered as a master counterplan for mitigating flood damage.
The Japanese Government during the Meiji era proceeded to dividing three river streams, known as Meiji River Improvement, with the assistance of Hollander Civil Engineer, Johannis De Rijke, from about 1870. This paper aims at describing the historical and hydrological circumstances of the counterplan in the Kiso River basin until Meiji River Improvement.
It is known that human activity taken for river improvement has an unexpected influence on geographical, hydrological and social activities in a river basin. This interaction between rivers and human society under various governmental regime is also explained from historical viewpoint to a certain extent.
