Question

Difference between contour bunds and graded bunds

Answer 1

Bunds are simple earthen embankments of varying lengths and heights, constructed across the slope. When they are constructed on thecontour of the area, they are called ascontour bunds and when a grade is provided to them, they are known asgraded bunds.

Answer 2

Answer:

Contour bunding is constructed along the contour lines. They are constructed with permissible deviation from the contour. When a grade is provided along the bund for safe disposal of runoff water over the area with two consecutive bunds then these are called graded bunding.

Explanation:

Contour bunding (or contour bundling):- involves the placement of lines of stones along with the natural rises of a landscape, and contour farming. These techniques help to capture and hold rainfall before it can become runoff.

Graded bunds:-These bunds are called peripheral bunds. They serve as fences and give protection from water and wind erosion in low rainfall areas. They are not suitable in heavy rainfall areas.