The outburst discharge from the natural dam such as landslide dam or moraine dam can cause catastrophic flood disasters along the river valley. It is thus pressing need development of numerical approaches to analyze such catastrophic floods and debris flows caused by natural dam failures. In this paper, a numerical approach to analyze natural dam failure by seepage has been discussed. The seepage and slope stability models were integrated with a flood and debris flow routing model. The results of numerical simulation were compared with results obtained from experiments. The numerical approach described in this paper could be useful tool for risk assessment of potential outburst floods from natural dam failure. |