Ben & George
A flood occurs when water overflows or inundates land that's normally dry. This can happen in a multitude of ways. Most common is when rivers or streams overflow their banks. `Excessive rain, a ruptured dam or levee, rapid ice melting in the mountains, or even an unfortunately placed beaver dam can overwhelm a river and send it spreading over the adjacent land, called a floodplain. Coastal flooding occurs when a large storm or tsunami causes the sea to surge inland.
Heavy rain falls for days and days, building up too much water for ground water systems to handle. The water begins to rise and gets higher and higher until it floods into your home. The type of land that is prone to flooding are broad and flat usually situatedon the banks of a river or main waterway. A flood happens when to much rain falls. storms can cause floods and cannot be absorbed by the soil.
Floods occur most commonly when water from heavy rainfall from meltiing ice and snow, or from a combination of these exceeds the carrying cappacity of the river system, lake or ocean into which it runs.