Question

how are dams are responsible for causing floods

Answer 1

because if dam is filled with water due to heavy rain then they open the gates and let the water flow then it causes flood

Answer 2

Dam faliure is the main cause of flood

A dam failure is simply an uncontrolled release of water from a reservoir through a dam as a result of structural failures or deficiencies in the dam.

There are four major causes of dam failures, they include:

Overtopping: These failures occur as a result of poor spillway design, leading to a reservoir filling too high with water, especially in times of heavy rainfall.

Foundation defects: These failures occur as a result of settling in the foundation of the dam, instability of slopes surrounding the dam, uplift pressures, and seepage around the foundation.

Piping and seepage failures: These failures occur as a result of internal erosion caused by seepage and erosion along hydraulic structures such as the spillways.

Conduit and valve failure: These failures occur as a result of problems with values and conduit.

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