Correct option is A
The correct answer is (A) Khadin system
Information Booster:
- A water harvesting structure is a system or construction designed to collect, store, and manage rainwater or surface runoff for future use.
- These structures play a critical role in conserving water, replenishing groundwater, and providing water for irrigation, domestic, and other uses, especially in areas facing water scarcity.
Common Types of Water Harvesting Structures
Rainwater Harvesting Pits/Tanks:
- Small tanks or pits constructed to collect rainwater directly from rooftops or open areas.
- Water is stored for domestic or agricultural use.
Check Dams:
- Low barriers constructed across streams to slow water flow and allow it to percolate into the ground.
- Helps in groundwater recharge.
Percolation Tanks:
- Artificially created reservoirs that hold water and allow it to seep into the ground, increasing the water table.
Contour Bunds:
- Raised structures built along contours on sloping lands to prevent soil erosion and promote water infiltration.
Recharge Wells:
- Deep wells that collect rainwater and direct it to aquifers, helping in groundwater recharge.
Farm Ponds:
- Small ponds constructed on farms to collect and store rainwater for irrigation and other agricultural needs.
Sand Dams:
- Barriers made in riverbeds that trap sand and store water within the sand for future use.
Borewell Recharge Structures:
- Structures that channel rainwater directly into borewells, replenishing underground water levels.
Benefits of Water Harvesting Structures
- Water Conservation: Helps conserve rainwater that would otherwise be lost as runoff.
- Groundwater Recharge: Replenishes aquifers and raises the water table.
- Flood Mitigation: Reduces surface runoff and minimizes the risk of flooding.
- Sustainable Water Supply: Provides water for drinking, agriculture, and industrial needs during dry periods.
- Environmental Benefits: Prevents soil erosion, enhances vegetation, and supports ecosystems.
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