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 Form 4 Geography: Management and conservation of environment online lessons

Measures used to control floods

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Answer Text:
Measures to control of Floods.
-Construction of dams to reduce the speed and amount of water flowing down stream by excess water flowing into the reservoir.
-Construction of dykes or high walls some distance from the river bank, lake shoe or sea shore to protect low lying land from being flooded by
water from the water body.
-Making piles of earth along the riverbanks to form a raised platform to keep flood waters within the river channel.
-Reforestation of land to reduce to increase infiltration by vegetation giving rain water ample time to percolate and thus reduce runoff meaning there will be less water in rivers and hence less incidents of flooding.
-Dredging of shallow river channels to increase their depth and hence the channels capacity.
-Straitening of rivers with meanders to enable the water to flow more swiftly.
-Diverting of some river tributaries to reduce the volume of water getting into the main river.


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