mitigation strategies for flood
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Flood mitigation. In environmental engineering, the flood mitigation involves the management and control of flood water movement, such as redirecting flood run-off through the use of floodwalls and flood gates, rather than trying to prevent floods altogether.
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Levees: A levee is an embankment constructed by engineers out of organic materials such as earth and stone, in order to prevent the flooding from a free flowing body of water in a specific location such as a residential community.
Flood walls: Flood walls are constructed out of materials such as concrete or steel in order to control the flow of flood waters and prevent the flooding of specific areas.
Fills: A fill is an area of land dug out usually behind a levee in order to capture excess flood waters and prevent flood damage to human structures.
Dams: The primary purpose of this structure unlike a levee is to retain water, not to manage flood water. A dam can produce hydroelectricity as well as regulate water levels by opening and closing the retaining doors.
Reservoirs: The man-made lakes produced as a result of the creation of a dam which can slow the flow of the river downstream. Furthermore, a reservoir can be used for fresh water for a community as well as a preserve for fish and wildlife.
Reducing bed roughness: This method of mitigation smooths the bed of the river, which allows for the river to flow faster and reduces the likelihood of a flood.
Altering stream channels: This strategy is similar to reducing the river bed's roughness. It additionally creates a "V" in the river's bottom. This deepens, as well as increases, the speed of the river, reducing the risk of flooding because the water flows away from the floodplain areas quicker.
Flood walls: Flood walls are constructed out of materials such as concrete or steel in order to control the flow of flood waters and prevent the flooding of specific areas.
Fills: A fill is an area of land dug out usually behind a levee in order to capture excess flood waters and prevent flood damage to human structures.
Dams: The primary purpose of this structure unlike a levee is to retain water, not to manage flood water. A dam can produce hydroelectricity as well as regulate water levels by opening and closing the retaining doors.
Reservoirs: The man-made lakes produced as a result of the creation of a dam which can slow the flow of the river downstream. Furthermore, a reservoir can be used for fresh water for a community as well as a preserve for fish and wildlife.
Reducing bed roughness: This method of mitigation smooths the bed of the river, which allows for the river to flow faster and reduces the likelihood of a flood.
Altering stream channels: This strategy is similar to reducing the river bed's roughness. It additionally creates a "V" in the river's bottom. This deepens, as well as increases, the speed of the river, reducing the risk of flooding because the water flows away from the floodplain areas quicker.
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