What is a contour map? Write any two objects of preparing contour map.

What is a contour map? Write any two objects of preparing contour map.
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1 Answer

Answer :

Contour map : It the map showing nature of topography of any particular field with the help of contour lines indicating reduced levels of ground.

Objects of preparing contour map : Contour map is prepared for the following

1. To know the nature of ground (i.e. elevation, depression, slope etc.) of the field under consideration.

2. To decide the feasible site of dam construction by knowing maximum probable reservoir storage capacity.

3. To finalise the best suitable alignment of roadway or railway by knowing earthwork calculations.

4. To excavate the canal and contour cut trenches along hillside under watershed management works.
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