Water, usually thought of as soothing and caressing, is surprisingly heavy — and surprisingly destructive. And when water is moving at 30 or 40 miles an hour, like the tsunami that inundated northern Japan on Friday, the heaviness of water turns deadly.
Water Pressing Against the HouseThis movement creates hydrodynamic loads that continually push against the building, weakening its structure, while also depositing soil or other sediment against the house. The weight of this sediment buildup provides further pressure on the house, adding to the damage.
However, floods have enormous destructive power. When a river overflows its banks or the sea moves inland, many structures are unable to withstand the force of the water. Bridges, houses, trees, and cars can be picked up and carried off. Floods can cause even more damage when their waters recede.
Category 3 Water Damage: Black Water DamageCategory 3 water damage, aka “black water†damage, is the most extreme kind of water damage and requires swift action to mitigate serious health risks. Black water includes sewage, rising flood waters, seawater, as well as river and ground water.
The environment can get severely devastated from a flood. Flood is mainly dirty water that carries waterborne diseases and possibly chemicals that can affect the quality of soil in the environment. The water supply in an area may get polluted from flood water resulting in diseases and epidemic.
A flood occurs when water inundates land that's normally dry, which can happen in a multitude of ways. Excessive rain, a ruptured dam or levee, rapid melting of snow or ice, or even an unfortunately placed beaver dam can overwhelm a river, spreading over the adjacent land, called a floodplain.
Detrimental environmental effects of flooding can include soil and bank erosion, bed erosion, siltation or landslides. It can damage vegetation and pollutants carried by flood water can impact on water quality, habitats and flora and fauna. Flooding can however play a beneficial role in natural habitats.
Similarly, flood waters on the first floor may render the entire home uninhabitable. Until the water is pumped out and repairs made, the occupants will have to live elsewhere. In more severe events, the occupants may never be able to return to the home.
10 Facts About Flooding
- Floods are the most common natural hazards in the United States.
- Floodplains provide roughly 25 percent of all land-based ecosystem service benefits yet they represent just 2 percent of Earth's land surface.
- Wetlands in the U.S. save more than $30 billion in annual flood damage repair costs.
Natural disasters are caused due to different reasons like soil erosion, seismic activity, tectonic movements, air pressure, and ocean currents etc. Natural activities taking place in the earth's crust, as well as surface, are the main reasons for these disasters.
A flood is a great flowing or overflowing of water onto land that is not usually covered by water. A flood happens when too much rain falls, brought by storms and strong winds, and which can't be absorbed by the soil. Rivers burst their banks and the water spills onto the land.
The immediate impact is disruption; flood water can block transportation routes, isolating parts of cities or entirely cutting off access to remote communities. Large quantities of water may sweep away fragile buildings and bridges, and damage electrical supplies.
flooding | American Dictionarythe condition of becoming filled or covered with a large amount of water: Rain caused flooding that washed out bridges and covered roads.
