Flood Damages and How to Control the Situation
The generally accepted definition of a flood is a body of water covering land usually dry under normal circumstances. Common natural calamities include floods. They take back human development anytime they occur. Identified negative effects include; they destroy premises, influence soil erosion and contaminate water for drinking. Causes of floods are many including overflowing lakes, rivers as well as seas. Flooding is as old a human life. Civilization in ancient times took place along waterways. Water is life as such; man was forced to settle along riverbanks.
Flooding also carries its good side in spite of the many negative effects. Fertility of the land around River Nile in Egypt owes its allegiance to floods by the same river. This was before the floods along the said river were contained by the construction of Aswan High Dam. Floods are responsible for depositing fertile soil in Bangladesh during the monsoon season although they are also destructive to humanity. However, they also kill thousands of people in addition to destroying property.
Floods always hit land next to rivers and water masses at yearly. Rains result in more water for rivers to carry. Melting of snow in the mountains where most rivers have sources is another cause for floods. Flash floods are caused by thunderstorms in many ways. In this case, small rivers swell fast forcing them to carry water tenfold their capacity. Silt, sand and water are carried by slow moving rivers. They erect beds in the process. Beds raise rivers above their normal level even in comparison to the land that hosts them. You find such rivers in Chicago.
Phoenix AZ Rivers build floods slowly but the result is more damaging. More land stands affected. Coastal rivers such as those in Fort Myers are also on the receiving end of floods. Floor tsunamis that result from earthquakes on the ocean lead to more than 15-meter high waves. They then flood several miles on the land from the coastline. A tsunami in the Indian claimed more than 250,000 people. Affected countries included Thailand, Sri Lanka and Indonesia among others.
Experts also point at Cyclones, hurricanes as well as tropical storms as other causes of floods. The whole region of Mississippi Delta felt the strength of Hurricane Katrina as it did Chicago. Fort Myers and Phoenix AZ felt too. Responsible authorities whisked people away to avoid more deaths. The dangers of flooding increase in low-lying regions. The Netherlands, whose major part lies below sea level, is an example. Haiti was compounded and almost crashed by floods.
What people do in many ways contributes to floods. No one disputes the role of trees and plants in protecting the world from the effects of excessive water. Cutting down trees leaves the land bare for water to act on. In turn, they cause mudslides. Dangerous cracks on dams by excess water are evident. In fact; total breakage is the final result. Many methods are developed o take care of the effects of floods. The Netherlands for instance, has constructed dams and dykes to safeguard the land along the coast.