what are contour lines and what are their use?
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Contour lines are lines drawn on a map with equal elevation points, so elevation would be constant if you followed the contour line physically. The elevation and terrain shape of the contour lines shows. It is useful because they show the form of the land surface on the map–its topography.
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Contour line definition is - a line (as on a map) connecting the points on a land surface that have the same elevation.
Uses of the Contour Lines:
- To estimate the water storage capacity, back water limit and max . ...
- Volume of the proposed excavation wok,
- To decide whether certain location is visible from another location,
- To decide exact line of railway or road way haing safe slope,
- To determine the ground water level from contours of ground water
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