2.4	Extraction of Elevation Profile using SRTM or ASTER DEM

2.4.1    Stepwise Process Flow Details 

 -    Step 1: Install the SRTM Downloader Plugin o    Open QGIS. o    Go to the Plugins menu. o    Select "Manage and Install Plugins." o    In the Plugins dialog, search for "SRTM Downloader." o    Click on the plugin and then click the "Install Plugin" button to install. 

 -    Step 2: Access the SRTM Downloader Plugin o    Once the plugin is installed, you should see a new menu item called "SRTM Downloader" in the QGIS toolbar. -    Step 3: Define Study Area o    Zoom in to your study area in QGIS using the zoom and pan tools. o    Use the rectangle or polygon selection tool to define the area you want to download the SRTM data for. You can find these selection tools in the QGIS toolbar. 

 -    Step 4: Run the SRTM Downloader Plugin o    Click on the "SRTM Downloader" menu in the QGIS toolbar. o    Login using the Earthdata user account. o    In the SRTM Downloader dialog, choose the output folder where you want to save the downloaded data. 

 -    Step 5: Start the Download o    Click the "OK" button to start the download process. The plugin will automatically download the SRTM data for the defined study area. 

 

    Step 6: Process the Downloaded Data o    Once the download is complete, the SRTM data will be available in the output folder you specified. o    You can now use the downloaded SRTM data for your analysis in QGIS. 

 

 2.4.2    Output Illustrations 

 

 Figure 6 Illustrations of extracted elevation profile, Ranchi (India) Source – CWIS spatial analysis, Innpact Solutions and GWSC