How to prevent floods?

Answer 1

There are a myriad of ways to prevent floods. The creation of flood plains and winding streams are two of the best ways to hinder the accumulation of water by providing a route for the drainage of water. Also, the protection of wetlands helps to maintain a natural drainage system to provide a place for the excess water to gather. Such devices allow the water to evaporate before it can accumulate, creating flooding conditions.

Levees also impede the collecting of water. Levees are embankments composed of soil and earthen material that are used to prevent annual flooding in many areas. With a levee, a huge amount of rain water is required before flooding occurs. However, one drawback to their use is that if water is able to get past the levees, then the flooding is significantly worse and causes several times more damage.

Other ways of preventing floods include placing sandbags along the riverbank to serve as levees and placing large rocks on banks to prevent erosion, which prevents riverbanks from deteriorating, remaining high enough so that flooding will not occur as frequently.

Natural vegetation, such as trees and plants, helps prevent runoff. In areas where vegetation has been removed by such processes as logging or construction, it must be replaced, a method known as reforestation. This is especially important in the headwater parts of a river's drainage basin. To help control flooding near a river's mouth, spillways are used. These are channels that run through the back swamps parallel to the main stream.

Here are some suggestions to prevent floods from dams.

Literally those are related to particular dams, although, those will be assistive for others.

Continuously preserve our forests, learn proper way of garbage disposal, educate the people on ways to prevent floods and government should implement strict laws and regulations on people/organization abusing our environment which greatly cause floods like illegal logging, water pollution, squatting, etc... government should study and trace well the symptoms of this issue to come up with better treatments.

You can prevent it by not cutting more trees..throwing garbage..and etc.

We can build clay dams, remove weeds from ditches, build Bailey bridges etc.

we can use check dams and dams and wetlands