Explain Squares or Grid Method of Contouring?

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Squares or grid method is suitable for contouring of plains or gently sloping grounds.

The steps adopted are as follows:
i) Mark square grids on the land to be surveyed. The grid size would depend on the extent of survey.
Generally a 1m x 1m grid is selected for small works and a larger grid size for large works

ii) Levels are taken at all the corners of the square and the intersection of the diagonal.

iii) Levels taken on the intersection of diagonals is used for verification of the interpolation.


vi) Contour map is plotted in the office by interpolating points of equal elevation based on the levels taken on the corners of the square.

We at are thankful to Mr Ramasesh Iyer for submitting this useful information to us.

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  • numeri ame June 6, 2012 at 11:19 am

    I really need to thanks

  • Domnick Kiche October 16, 2016 at 3:53 pm

    I am thankful for the good information you people do provide for us may God be with you

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