Abstract
The leading hydrologists around the world have been working hard to develop some kind of preventive measures to reduce the disastrous consequences of a flash flood in advance. For this purpose, a flash flood early-warning and forecasting system that can accurately and timely forecast an coming flash flood has being the research focus in this field, despite its difficulties and complexities. An ideal to specify those areas that are subject at high risk to flash flood in terms of precipitation intensity in a relatively large region is proposed in this paper. It is accomplished through the design of the High Risk Flash Flood Rainstorm Area (HRFFRA) with a certain return period for a given duration based on the application of the end-to-end Regional L-moments Approach to precipitation frequency analysis. A HRFFRA is defined as the area potentially under hitting by higher intense-precipitation for a given duration with certain return period that may cause a flash flood disaster in the area. An example to develop the HRFFRA has been demonstrated in detail in this paper through the application of the Regional L-Moments Approach to precipitation frequency analysis in Jiangxi Province, South China Mainland. The high risk areas that will be hit by an forthcoming flash flood can be visually showed by the HRFFRA, with its help, hydrologists and governments can substantially reduce the disastrous outcome of a flash flood beforehand.
Highlights
A flash flood is a flood that rises and falls quite rapidly with little or no advance warning, usually caused by intense rainfall over a relatively small area
The outstanding flash flood with muddy flow caused by record heavy rainfall during the Molakot Typhoon on 8/8/2009, suffered in xiao-lin-zhuang, Taiwan, took more than 460 lives
The flash flood may occur after the collapse of a human structure, for instance, the failure of the South Fork Dam located on the Little Conemaugh River 14 miles upstream of the town Johnstown, Pennsylvania, burst through on 5/31/1889, killed more than 2,200 people and caused US$17 million of damage after several days of extremely heavy rainfall
Summary
A flash flood is a flood that rises and falls quite rapidly with little or no advance warning, usually caused by intense rainfall over a relatively small area. Flash flood and induced muddy flow is one of the major rainstorm-related disasters in China. The worst flash flood with muddy flow, caused by extremely heavy rainfall with soil erosion, occurred on 8/8/2010 in Zhouqu, Gansu Province, took 1467 lives with 198 missing. The outstanding flash flood with muddy flow caused by record heavy rainfall during the Molakot Typhoon on 8/8/2009, suffered in xiao-lin-zhuang, Taiwan, took more than 460 lives. The flash flood may occur after the collapse of a human structure, for instance, the failure of the South Fork Dam located on the Little Conemaugh River 14 miles upstream of the town Johnstown, Pennsylvania, burst through on 5/31/1889, killed more than 2,200 people and caused US$17 million of damage after several days of extremely heavy rainfall. The most recent catastrophe caused by flash flood across the world occurred in the town Kedarnath, India. The spatial interpolation scheme is used in combination of the contouring technique to form the HRFFRA
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
