Extraction of Topographical features using DEM data

Procedure

  1. Click on the experiment, a window will open with objective. Click on description tab to understand the terminology in the experiment, click on the NEXT button to proceed.

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  2. Click on the Choose Map tab to select the map provided to proceed.

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  3. Click on the Color Ramp tab to select either of the colour ramp provided to proceed.

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  4. After selecting the Color Ramp click on the image to select the map then select a symbology.

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  5. Click on the DEM Derivatives, a subtab will be displayed. Select one of them, then click on the required symbology, hover on legend tab to view the legend.

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  6. To view the slope, Hillshade and Aspect select the data then give OK. Now click on the required symbology, hover on legend tab to view the legend.

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  7. To view the Fill, Flow Direction and Flow Accumulation, select the data then give OK. Now click on the required symbology, hover on legend tab to view the legend.

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  8. Click on the Stream Network to view the river Network flow.

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  9. Click on the watershed to view Basins.

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  10. Click on the selected map to view a subbasins.

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