抄録
A history of the Kakehashi river water system in Komatsu Ishikawa Japan has been reviewed. It is found that the ecological system has changed dramatically after the completion of the short-cut construction between Shimomaki and Tsurugashima in 1923: The Kakehashi river was in perfect harmony with all the creatures including human beings before the construction, but the favourable interaction was restricted after the construction to some extent. The degree of the restriction had increased with the subsequent constructions for the channel arrangement and embankment completed in 1936 and 1943 respectively.
The present review has clearly revealed that the ecological system is still well preserved and attractive. It is particularly desirable that the future ecological system of the Kakehashi river as well as the new countermeasure against the flood are developed on the basis of the global view in order to preserve the ample nature and excellent culture in Kamotsu.
