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Showing posts from August, 2018

Delineation Of Watershed using ArcGIS

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Step 1: Download Aster data from USGS-Earth Explorer website  Step 2: Open Arc GIS – add downloaded Aster contours file – Merge all the contour shp files into single contour file – Click Geoprocessing tool – use Merge option – add all contour file and save it in the desired place – click ok. Step 3: Set projection to the contour file: Open Arc toolbox – Data management tool – Projections and transformations – Project – Give the input file of contour – set output coordinate system as Projection coordinate system – and click ok. Step 4: Open Arc toolbox – Spatial Analyst Tool – Interpolation tool– Topo to raster – add projection contour file - change field as elevation and set output cell size as 200 and click ok. This Video Provides the visual aid for Delineating Watershed:  https://youtu.be/pa7z0g07iZQ Step 5: Export the resulted data and save in the desired place with the desired name and add that data. Open Arc toolbox – Spatial Ana...

Delineation of Watershed using SRTM Data

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·     Step 1:    Download SRTM data from Open DEM website – Download SRTM contours as Shapefile. ·     Step 2:  Open Arc GIS – add downloaded SRTM contours file – Merge all the contour shp files into single contour file – Click Geoprocessing tool – use Merge option – add all contour file and save it in the desired place – click ok. ·     Step 3:  Set projection to the contour file: Open Arc toolbox – Data management tool – Projections and transformations – Project – Give the input file of contour – set output coordinate system as projected coordinate system – UTM  and click ok.        Step 4:  Open Arc toolbox – Spatial Analyst Tool – Interpolation tool– Topo to raster – add projection contour file - change field as elevation and set output cell size as 200 and click ok.             Step 5:  Export the resulted data and save in the desired...