State the salience of rain water harvesting.

Rain water harvesting is a method to capture and store rainwater for various uses.

(i) It is also used to recharge groundwater aquifers.

(ii) It is a low cost and eco-friendly technique for preserving every drop of water by guiding the rain water to bore well, pits and wells.

(iii) Rainwater harvesting increases water availability, checks the declining ground water table.

(iv) It improves the quality of groundwater through dilution of contaminants like fluoride and nitrates.

(v) It prevents soil erosion, and flooding and arrests salt water intrusion in coastal areas if used to recharge aquifers.

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Describe the watershed development and management programmes in the country initiated by the Central and State Governments.

Why is conservation and management of water resources essential in India? State any three reasons.

Mention the five characteristics each of 'surface water resources' and 'groundwater resources' in India.

Describe the potential water resources of India.

Water Resources