Hi
We are working on a research about prediction river discharge in ungauged stations.
we considered some stations and each of these stations has a sub basin that we know the area of each sub basin but we haven't any information about the border of each sub basin.
I know that we can determine the border of basins by the topography map of region and using GIS. But I don't know the process of doing it.
1. Is there anyone who know about it or introduce me an education to do it?
2. Is there any better method to determine border of basins?
Thanks a lot
Hi haghighat
There are a lot of tutorial (document and videos) on how to delineate watershed using qgis or arcgis on Internet.
Keep in mind that your result will depend on the quality of your dem data and the algorithm used.
I can suggest to use arcgis software with swat or HEC RAS tools
Good luck
You can use ArcGIS by following the steps in the attached files
The below is also has useful guidelines
https://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/hydrologic-analysis-sample-applications.htm
You can use "Watershed delineation tools" in ArcGIS, similar capabilities exists in QGIS see this video:
https://www.youtube.com/watch?v=v3Ajg6W8Rj8
If you are in the USA, you can use USGS pre delineated watersheds, Please see here:
https://www.usgs.gov/core-science-systems/ngp/national-hydrography/watershed-boundary-dataset?qt-science_support_page_related_con=4#qt-science_support_page_related_con
Thanks everybody for sharing their experiences and I look forward to see more comments from the others
My study area is in Iran, Fars province
You can see it in below link:
https://www.google.com/maps/@28.5822303,52.9369098,7z
Dear Michael John Patrick
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