Types Of Floods And Their Causes Pdf

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Believe it or not, flooding is the deadliest type of severe weather. Use the buttons below to jump to the flood facts you care about the most, or read the entire Flooding guide to become an expert!

One of the keys to understanding flood risk is understanding the nuances of the type or types of flood you face. There are several different kinds of flood, and each one bears a different impact in terms of how it occurs, the damage it causes, and how it is forecasted. A coastal flood, as the name suggests, occurs in areas that lie on the coast of a sea, ocean, or other large body of open water. It is typically the result of extreme tidal conditions caused by severe weather.

Flooding 101

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Flooding 101

Flood , high-water stage in which water overflows its natural or artificial banks onto normally dry land, such as a river inundating its floodplain. The effects of floods on human well-being range from unqualified blessings to catastrophes. The uncontrolled floods of the Yangtze River Chang Jiang and the Huang He in China , however, have repeatedly wrought disaster when these rivers habitually rechart their courses. Uncontrollable floods likely to cause considerable damage commonly result from excessive rainfall over brief periods of time, as, for example, the floods of Paris and , of Warsaw and , of Frankfurt am Main and , and of Rome and Potentially disastrous floods may, however, also result from ice jams during the spring rise, as with the Danube River , , , and and the Neva River in Russia, ; from storm surges such as those of and that flooded the coasts of England, Belgium, and the Netherlands; and from tsunamis , the mountainous sea waves caused by earthquakes, as in Lisbon and Hawaii Hilo , Floods can be measured for height, peak discharge, area inundated, and volume of flow. These factors are important to judicious land use, construction of bridges and dams, and prediction and control of floods.

Since floods can damage any property in almost any area, it is important to learn about the various types of floods and how they can affect properties. They are caused by heavy rainfall or rapid snow thaw. Floods usually cover a relatively small area and occur with little to no notice, generally less than six hours. The rapid water torrents can move large objects such as cars, rocks, and trees. Coastal areas with fewer defenses and lower elevation are the most affected. The best time to repair the breach is during low tide.

What Causes Floods? Top 8 Common Causes of Flooding

Sridhar and A. Minor flooding This causes inconveniences such as closure of minor roads or low lying land. Hanspeter Stamm. This is because flooding can carry bridges, cars, houses, and even people.

Other methods include levees, dikes, dams, retention or detention basins. Communities preferred improvement of drainage structures with detention basins near the sites. Floods are caused by many factors: heavy precipitation, severe winds over water, unusual high tides, tsunamis, or failure of dams, levels, retention ponds, or other structures that contained the water. During times of rain or snow, some of the water is retained in ponds or soil, some is absorbed by grass and vegetation, some evaporates, and the rest travels over the land as surface runoff.

Every year floods cause enormous damage all over the world. This study investigates loss of human life statistics for different types of floods and different regions on a global scale. Information from this source on a large number of flood events, which occurred between January and June , is evaluated with respect to flood location and flood type. Due to the limited availability of information on coastal flood events, the scope of this study is limited to three types of freshwater flooding: river floods, flash floods and drainage problems.

What are the two types of floods?

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Global Perspectives on Loss of Human Life Caused by Floods

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Flooding is experienced all over the globe and for a variety of reasons — but why exactly does flooding occur? There are several human causes of flooding, including poorly designed infrastructure. There are also natural reasons flooding happens. Here are eight of the most common causes of flooding, both natural and human-induced. And the consequences of flooding can be savage. The simplest explanation for flooding is heavy rains. No matter where you live, you are surrounded by infrastructure and systems designed to move rainwater into appropriate basins and reservoirs.

The Causes of Floods

The main types of floods

Floods impact on both individuals and communities, and have social, economic, and environmental consequences. The consequences of floods, both negative and positive, vary greatly depending on the location and extent of flooding, and the vulnerability and value of the natural and constructed environments they affect. The consequences of floods, both negative and positive, vary greatly depending on their location, duration, depth and speed, as well as the vulnerability and value of the affected natural and constructed environments. Floods impact both individuals and communities, and have social, economic, and environmental consequences Table 1. As most people are well aware, the immediate impacts of flooding include loss of human life, damage to property, destruction of crops, loss of livestock, and deterioration of health conditions owing to waterborne diseases. As communication links and infrastructure such as power plants, roads and bridges are damaged and disrupted, some economic activities may come to a standstill, people are forced to leave their homes and normal life is disrupted.

Water may seem benign, but in huge quantities it can be an enormously destructive force. When floods occur they bring with them numerous problems, ranging from the physical impact of water damage to the problems of disease and famine that can follow such disasters. The causes of flooding are varied, but the effects of most causes can be managed if not prevented. Unusually heavy weather at the source of a river can lead to vast amounts of water draining into the water table. The water table of a river is the area from which it gathers water, so if an unnaturally high level of water is draining into this area, this will lead to similarly high levels of water in the river. This often occurs at lower reaches of a river in areas of habitation, causing extensive damage.

Flooding 101

 - Тебя оно не обрадует. - В ТРАНСТЕКСТЕ сбой. - ТРАНСТЕКСТ в полном порядке. - Вирус.

Но это значит… значит… что мы не можем… - Это значит, что нужен другой план действий.  - Фонтейн, как обычно, говорил спокойно и деловито. Глаза Джаббы по-прежнему выражали шок и растерянность, когда сзади раздался душераздирающий крик: - Джабба. Джабба. Это кричала Соши Кута, его технический ассистент, подбегая к платформе с длиннющей распечаткой в руке.