The output of a flood forecast is typically a maximum expected water level and the likely time of its arrival at key locations along a waterway, and it also may allow for the computation of the likely statistical return period of a flood. Stress and anxiety, disruption to living , loss of community, loss of cultural and environmental sites, ecosystem resource loss Flooding in key agricultural production areas can lead to widespread damage to crops and fencing and loss of livestock. Figure: Sapt Kosi is formed by seven rivers in south-east Nepal. Structures, such as bridges, that must unavoidably be in flood hazard areas should be designed to withstand flooding. Other negative effects include loss of habitat, dispersal of weed species, the release of pollutants, lower fish production, loss of wetlands function, and loss of recreational areas. I live in an area where flooding hardly occurs; What could I do to help people that live in those areas? More than 600,000 people were displaced, while 500 died from floods that covered 1 million acres with 30 feet of water. The Kosi river system drains about 60,000 km2 of eastern Nepal and southern Tibet before it enters Bihar.
Elevate Building Another key solution to prevent any water to flood your artwork is to raise the building you are housing them in. Ordinances can be adopted to require developers to retain stormwater on site and require buildings to be elevated, protected by and , or designed to withstand temporary inundation. Short duration precipitation is more significant to flooding within small drainage basins. Various reach models are available as of 2015, either models flood levels measured in the or models variable flood depths measured across the extent of a floodplain. Coastal flooding is typically associated with storm surges.
A large section of The Netherlands, for example, lie below sea level. The main channel slope is the second most important factor for larger watersheds. The sheer amount of water contained in a tsunami, combined with the velocity of the strike, means that these types of disasters cause enormous loss of life. Retrieved 13 January 2016 — via YouTube. Some rainwater is absorbed by the ground where it goes on to form underground water, and some of it evaporates back into the atmosphere to form clouds which will later fall as rain. This type of river is by far the most common. Lack of clean water combined with in the flood waters raises the risk of , which can include , , , and many other diseases depending upon the location of the flood.
A heavy snow can bring down trees and power lines. In the near rivers and streams, measures can be taken to try to slow down or reverse the natural forces that cause many waterways to meander over long periods of time. When these defenses fail, emergency measures such as or portable inflatable tubes are often used to try to stem flooding. Channel slope and rainfall intensity become the third most important factors for small and large watersheds, respectively. The water and landscape can be contaminated with hazardous materials, such as sharp debris, pesticides, fuel, and untreated sewage. Reinforced concretestructures are heavily damaged. Meltwater flooding the Watson River in Greenland.
In alpine regions reservoirs are built to hold back water and control the flow of small rivers. Two larger floods occurred at the same site within a week, but no one was at the waterfall on those days. Bird populations may also profit from the boost in food production caused by flooding. In 2011 a tsunami struck Japan, leaving more than 10,000 people unaccounted for in one coastal town alone. Bihar is surrounded by Nepal in the north, West Bengal in the east, Uttar Pradesh in the west and Jharkhand towards the south.
The first effect they have is to confine the river to a narrow channel, causing the water to rise faster than if it were able to spread across its floodplain. A flood can be caused by many events such as intense rainfall. Flooding may result from the. In some areas rivers are dredged and their beds are laid deeper. At least once a year the plains around large rivers are flooded.
Catastrophic Catastrophic riverine flooding is usually associated with major infrastructure failures such as the collapse of a dam, but they may also be caused by drainage channel modification from a , or. Fast-moving water is extremely dangerous — water moving at 10 miles an hour can exert the same pressures as wind gusts of 270 mph 434 kph , according to a 2005 article in. There were 113 flood-related deaths. Fortunately, a village below the glacier was saved by stone walls that had been recently constructed, and nothing more was lost than a footbridge and one outbuilding. The leading edge of the flood thus advances more slowly than later and higher flows.
In an effort to control the damage, the Chinese government has built channels, dams and dikes to moderate the flow. Besides, basements can lead to wet artwork and damaged art in more ways than just flooding. Urban flooding also has significant economic implications for affected neighborhoods. There are 127 Universities in. They build up their own beds, making them higher than the land around them.