The flood is the most general and frequently occurs among natural disasters. Generally flood by the rainfall which extends superexcellently for the occurrence but flash floods happen in a frequent Time, caused by local heavy rain, and the demage incre...
The flood is the most general and frequently occurs among natural disasters. Generally flood by the rainfall which extends superexcellently for the occurrence but flash floods happen in a frequent Time, caused by local heavy rain, and the demage increases. So far, it's the mainstream to establish the system preventing disasters, focusing on big-sized rivers. Recent unusual changes of weather and geographical features make the flash fiood damage. Therefore, concerns about the countermeasures are addressed. Researches on predicting flash floods by small-sized rivers are not more than those on big-xized rivers yet. Even though the damage of big-sized river flood is complex and large in the economic respect, people raise the necessity of researches, flash flood model by mountainous rivers, connection between the models of big-sized rivers and mountainous rivers, and estimation of flooded amount. This paper aims to 1 hour real-time flash flood and predict possibibity at the area where is the possible flood will occur from the rainfall hour mountain after acquiring data in GIS(Geographic Information System) base by GcIUH(Geomorphoclmatic Instantaneous Unit Hydrograph). The flash flood occurrence is set up at 0.5m, 0.7m and 1.0m in standard depth. And this study suggests standard flood alarm which designed by probable flood according to duration time. The reseach result shows real-time flash flood evaluation has the suitable standard in the basin when comparing with the existing official warning announcement system considering topographical information.