Groundwater is the primary source of water for irrigation in India, accounting for approximately 60% of the total water used for agricultural purposes.

The National Water Mission was launched in 2011 with the aim of ensuring water security and sustainable water management in India.

The Narmada Basin is not a major river basin in India. The other three options are major river basins in the country.

Hirakud Dam is the largest reservoir in India, located in Odisha. It was constructed on the Mahanadi River.

Floods are not a major water-related issue faced by India. The other three options are major water-related issues faced by the country.

The Central Water Commission is the organization responsible for regulating water resources in India.

Deforestation is not a major source of water pollution in India. The other three options are major sources of water pollution in the country.

Jal Shakti Abhiyan is the program launched by the Government of India to promote rainwater harvesting.

Flood irrigation is not a major water conservation technique practiced in India. The other three options are major water conservation techniques practiced in the country.

The National River Conservation Mission was launched in 1995 with the aim of cleaning up rivers in India.

Floods are not a major challenge faced by India in terms of water management. The other three options are major challenges faced by the country in terms of water management.

The National Water Development Agency is the organization responsible for providing technical assistance and guidance on water resources development in India.

Deforestation is not a major source of water pollution in India. The other three options are major sources of water pollution in the country.

Jal Shakti Abhiyan is the program launched by the Government of India to promote rainwater harvesting.