Question

tungabhadra dam has gradually lost its water storage capacity over the decades because,
A. mining
B. soil erosion
C. accumulation of silt
D. all the above

Answer 1

The correct answer is 
Option D. All of the above
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The Tungabhadra dam has gradually lost its water storage capacity over the decades because of mining, soil erosion and accumulation of salt.

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Hope it helps

Answer 2

Answer:

Tungabhadra dam has gradually lost its water storage capacity over the decades because of the accumulation of silt.

Explanation:

• The accumulation of silt in key reservoirs has begun to have a negative impact on water storage in the state.
• The dam at Tungabhadra has taken the brunt of the silt buildup. According to a hydrological survey undertaken by the Water Resources Development Organisation, the Tungabhadra dam (built-in 1953) has lost up to 28 tmc ft of storage capacity, lowering the original dam capacity by 27%.
• The problem can be solved in the long run by removing the silt from the reservoir's interior and dumping it at the reservoir's boundaries in scientific and deliberate phases.  
• Farmers can use the silt that has been removed because it is rich in soil nutrients and fertile for crops.