2.1 water flowing, colorful, wild, or sudden floods often occur in the lower Plains and plains near the mountain water. Heavy rains caused by a continuous mountain in North for a long time. Make the number of accumulated water is plenty to the ground and the trees could absorb runoff into the low plain. Below are rapidly destroyed to create a level of violence that make households, erosion damage and can cause hazard to life. 2.2 flooding or flooding characteristics of floods that occur a lot of accumulated water runoff in a horizontal plane. From the high to the low into the flooded houses. Farming has been damaged, or flooding conditions. In large urban areas caused by heavy rain Continued for a long time. Caused by poor drainage system. Building obstructed drainage waters, or to high if an area close to the sea coast. 2.3 water overflow water quantity caused by Bank a lot of continuous heavy rain caused the river flowing into the river or excessive drainage into the basin below, or out to the mouth not water. Cause extreme flood overflow into the river bank gardens Farm households and on both sides of the water until it is damaged. Road or bridge may be damaged. Alternative transport is broken.
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