AN OUTLINE OF TAKATU-RIVER FLOODED BY TYPHOON NO.9

Abstract

So many times Western Sanin district located western part of Japan had a flood disaster by typhoon and localized torrential downpour during the rainy season. In this year the typhoon No.9 gave the second biggest damage by a flood to Takatu-river after the World War II. But serious casualty did not occur, such as he floodwater broke down the riverbank. That should lead the policy management system of cities around river is so good that the action to give admonish to efuge is quickly. But two problems were arisen. One was leakage of water from the riverbank and bases. It must be important to embrace better system considering land use. The other was that some flood escapes around river were flooded. It prevented from taking refuge. This problem remains to be solved.