Lesson 18 Representation of vertical distance – contd.
Objective of Lesson 18
Contour Gradient
Location Contour Gradient on a Map
Location Contour Gradient on the Ground
Example
Uses of Contours
Nature of Grounds
To Locate Route
Intervisibility between Stations
To Determine Catchment Area or Drainage Area
Storage capacity of a Reservoir
Examples
Exercise 18
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