Floods are caused by:
1. Rivers and streams overflowing their banks
2. Excessive rain
3. A broken dam or levee
4. Accelerated melting of ice and snow
5. When a tsunami or large storm forces the sea to surge inland ( a strong, wavelike, forward movement, rush, or sweep )
6. Monsoons ( a seasonal prevailing wind in the region of South and Southeast Asia. When the wind blows from the southwest it marks the rain season.
2. Excessive rain
3. A broken dam or levee
4. Accelerated melting of ice and snow
5. When a tsunami or large storm forces the sea to surge inland ( a strong, wavelike, forward movement, rush, or sweep )
6. Monsoons ( a seasonal prevailing wind in the region of South and Southeast Asia. When the wind blows from the southwest it marks the rain season.
Flood water comes from lakes, rivers, and oceans. To much rain can cause a river to spill water over the surrounding plain. This can happen because of hurricanes, storm surges, tides, and earthquakes.
Examples
Hurricane Katrina was caused by a storm surge in the Golf of Mexico
A 2004 tsunami killed hundreds of thousands in the India ocean
A 2004 tsunami killed hundreds of thousands in the India ocean
ways to prevent floods
1. To keep rivers from flooding, people build levees or dikes along their banks. Levees and dikes are a ridge of
sediment deposited naturally alongside a river by overflowing water.
2. Dams can also control the flow of water
3. Sand dunes and seawalls help protect against sea surges
sediment deposited naturally alongside a river by overflowing water.
2. Dams can also control the flow of water
3. Sand dunes and seawalls help protect against sea surges