1.

The water level in the reservoir increased beyond the limit. The authorities decided to open the shutter of dam and let the water flow into the river. To know how much-area will be flooded due to the overflowing river,a. Which analytical capability of Geographic Information System can be made use here? b. Write another example for this analytical capability.

Answer»

a. Buffer analysis of a linear feature. In this, the detailed information regarding the area and the people living on the banks of the river can be collected. A parallel zone can be created aside a linear feature like river. It shows the area of land that will get flooded.

b. Example :

  • The width of a road in a region is increased from 5 m to 8 m. Using buffer analysis, it can be easily determined as to how much land belonging to local people has to be acquired and how many people will become homeless.
  • If the width of the road is increased by 5 m on either side, how many people would lose land.
  • If the width of the road is increased only on the left side by 10 m, how much land has to be acquired and how many will become homeless. 


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