Causes of flash floods in Boai County in 2021

According to the Ping An Boai article on July 15, 2021, on July 11, 2021, a heavy rainstorm suddenly occurred. Floods occurred in many places along the Dan River in Boai County, and flash floods occurred in Boai County. The reasons are as follows:

1. Meteorological factors. Due to extreme weather conditions, such as continuous rain, strong winds or heavy rainfall, the surface of the upper reaches of the mountainous area is rapidly filled with water, a large amount of water is accumulated, and an imbalance occurs.

2. Geological factors. Due to different geological conditions, the width and density of ground fissures also vary. When floods flow in, if the geological conditions in the area are poor, floods may occur.