抄録
Establishment of timely warning and refuge system for debris flow is an urgent matter in the mountainous streams. Providing accurate information of rainfall for residents is also imperative. However a number of existing rain-gauges for that are still insufficient. Moreover, systematic methodology for layouts of telemeters aimed at the operation of timely warning and refuge system for debris flow from the viewpoint of sabo has not yet been established. On account of that, more rain-gauges should be installed immediately here. In this study, we examine characteristics of rainfall in the river basin and effecive layouts of telemeters based on existing rain-gauges and an areal concentration of mountainous steams threatened by debris flow. As a result, installations of 21 telemeters are proposed here.
