4 CHAPTER 1 HOW FLOODS FORM A flood is when a large amount of water flows onto land that is normally dry Most of the time extra water soaks into the ground Or it runs off into a body of water such as a river But sometimes there is more water than those areas can hold A flood happens
5 A flood can cover a whole neighborhood with water WATCH A VIDEO HERE
Rain that falls at a rate of 1 inch per hour can be enough to start a flood 6
7 Many events can cause floods Floods can happen anywhere rain falls Melted snow can make rivers overflow A dam can break and let water rush out Large storms on the coast cause floods too DID YOU KNOW Even a beaver dam can cause a river to flood Water floods out of a broken dam
