Correct option is A
The correct answer is: (A) Brush Dams
Brush dams are low-cost structures built using locally available materials like branches, twigs, and wooden logs to stabilize small gullies.
These dams help in reducing water velocity, trapping sediments, and promoting vegetation growth, which gradually stabilizes the eroded gully.
Information Booster:
Purpose:
Used to control soil erosion and stabilize small gullies.
Materials Used:
Constructed using branches, bamboo, logs, and stones.
Functioning:
Reduces water flow speed, allowing sediment deposition.
Supports vegetation growth, which further stabilizes the gully.
Best Suitable Conditions:
Small and shallow gullies Semi-arid and hilly regions where soil erosion is a concern.
Knowledge Booster:
Gradonies: are contour-based step-like structures used for soil conservation in hilly regions. They are effective for checking erosion on slopes.
- Contour Trenching: It involves digging trenches along contour lines to trap water and reduce runoff. Used for water conservation and soil erosion control on slopes.
- Graded Bunding: are earthen embankments constructed on sloping land to control runoff and soil erosion. More suitable for large-scale watershed management.
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