Floods can also occur in rivers when the flow rate exceeds the capacity of the river channel, particularly at bends or meanders in the waterway. Floods often cause damage to homes and businesses if they are in the natural flood plains of rivers. While riverine flood damage can be eliminated by moving away from rivers and other bodies of water, people have traditionally lived and worked by rivers because the land is usually flat and fertile and because rivers provide easy travel and access to commerce and industry. Flooding can lead to secondary consequences in addition to damage to property, such as long-term displacement of residents and creating increased spread of waterborne diseases and vector-bourne disesases transmitted by mosquitos.
Some researchers have mentioned the storage effect in urban areas with transportation corridors created by cut and fill. Culverted fills may be converted to impoundments if the culverts become blocked by debris, and flow may be diverted along streets. Several studies have looked into the flow patterns and redistribution in streets during storm events and the implication on flood modelling.
Flood waters typically inundate farm land, making the land unworkable and preventing crops from being planted or harvested, which can lead to shortages of food both for humans and farm animals. Entire harvests for a country can be lost in extreme flood circumstances. Some tree species may not survive prolonged flooding of their root systems.
Urban flooding can cause chronically wet houses, leading to the growth of indoor mold and resulting in adverse health effects, particularly respiratory symptoms. Respiratory diseases are a common after the disaster has occurred. This depends on the amount of water damage and mold that grows after an incident. Research suggests that there will be an increase of 30-50% in adverse respiratory health outcomes caused by dampness and mold exposure for those living in coastal and wetland areas. Fungal contamination in homes is associated with increased allergic rhinitis and asthma. Vector borne diseases increase as well due to the increase in still water after the floods have settled. The diseases that are vector borne are malaria, dengue, West Nile, and yellow fever. Floods have a huge impact on victims' psychosocial integrity. People suffer from a wide variety of losses and stress. One of the most treated illness in long-term health problems are depression caused by the flood and all the tragedy that flows with one.
Periodic flooding was essential to the well-being of ancient communities along the Tigris-Euphrates Rivers, the Nile River, the Indus River, the Ganges and the Yellow River among others. The viability of hydropower, a renewable source of energy, is also higher in flood prone regions.
In the riparian zone near rivers and streams, erosion control 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. Flood controls, such as dams, can be built and maintained over time to try to reduce the occurrence and severity of floods as well. In the United States, the U.S. Army Corps of Engineers maintains a network of such flood control dams.
In order to make the most accurate flood forecasts for waterways, it is best to have a long time-series of historical data that relates stream flows to measured past rainfall events. Coupling this historical information with real-time knowledge about volumetric capacity in catchment areas, such as spare capacity in reservoirs, ground-water levels, and the degree of saturation of area aquifers is also needed in order to make the most accurate flood forecasts.
Essay on flood in hindi: हेलो स्टूडेंट, हम आपको इस आर्टिकल में बाढ़ पर निबंध बताया गया है | पोस्ट अंत तक पढ़े
Flood waters carry along with them sand, silt, and other debris as they travel. When the velocity of the flash flood slows, it begins depositing this debris. Floods can leave behind large amounts of silt and other debris that can make travel difficult and can be costly to remove.
It is the need of the hour to set up better flood warning systems so that people are warned about the upcoming problem right on time and they have enough time to safeguard themselves and their belongings
Floods are caused by a number of reasons including heavy rainfall, overflow of water from water bodies such as rivers and oceans, melting of glaciers, hurricanes and strong winds along the coastlines. When there is a lack of good drainage system to suck up the excessive water it results in water logging that causes flood.
Though we cannot do much about the rain or the melting of the glaciers however we can certainly build good drainage systems to deal with the water they bring along. Many countries, such as Singapore that receive heavy rainfall for most part of the year, have really good drainage system. They come out clean even after days of heavy downpour. The government of India must also build good drainage system in order to avoid the problem of flood and the damage it does to the affected regions.
Hydrological drought is associated with the effects of periods of precipitation (including snowfall) shortfalls on surface or subsurface water supply (i.e., streamflow, reservoir and lake levels, groundwater). The frequency and severity of hydrological drought is often defined on a watershed or river basin scale. Although all droughts originate with a deficiency of precipitation, hydrologists are more concerned with how this deficiency plays out through the hydrologic system. Hydrological droughts are usually out of phase with or lag the occurrence of meteorological and agricultural droughts. It takes longer for precipitation deficiencies to show up in components of the hydrological system such as soil moisture, streamflow, and groundwater and reservoir levels. As a result, these impacts are out of phase with impacts in other economic sectors. For example, a precipitation deficiency may result in a rapid depletion of soil moisture that is almost immediately discernible to agriculturalists, but the impact of this deficiency on reservoir levels may not affect hydroelectric power production or recreational uses for many months. Also, water in hydrologic storage systems (e.g., reservoirs, rivers) is often used for multiple and competing purposes (e.g., flood control, irrigation, recreation, navigation, hydropower, wildlife habitat), further complicating the sequence and quantification of impacts. Competition for water in these storage systems escalates during drought and conflicts between water users increase significantly.
A flood is a type of natural disaster that can be caused due to heavy and continuous rainfall at a place for a long time. Heavy rain, cyclones, storms, etc., can lead to flooding in an area. The water reserves are filled due to rain, and when it rains for a long time continuously, the overflow of water in water reserves may cause flooding.
Several factors including natural and artificial are responsible for the re-occurrence of floods in Assam. First and foremost, Assam lies in the heart of monsoon belt and so gets overburdened with rainfall every rainy season. Due to this, the river along with its tributaries such as Subansiri, Manas, Kopili, Jia-Bhoroli, etc. get flooded and their banks overflow flooding the vast plain of the state. Secondly, the existence of long ranges of mountains on its northern and eastern boundaries compels the water to flow down into the vast plain causing the rivers to swell. Thirdly, every year due to heavy natural as well as artificial land sliding, Assam loses hundreds of kilometres of its land area. This soil erosion makes the river shallow, which later helps in the creation of a heavy flood.
Humility and hope walk hand-in-hand through Pope's essay. Since human beings cannot see the future, all they have is hope, which "springs eternal" to lighten the soul's burden and shine a light into dark places. For Pope, as for all Europeans in the 1700s, hope was a theological virtue. This means that hope did not refer to the desire for a better life on earth, but the longing for unity with God. In the essay, Pope writes that hope enables people to overcome the pain of the present by offering them a window into heaven.
It heavily destroys public and government properties. Destruction of Agricultural fields is of unimaginable concern because of floods. The occurrence of floods is due to heavy rainfall for prolonged periods or in short durations and the accumulation of excessive amounts of water. 2b1af7f3a8