I am a beginner to QGIS. My problem is I tried to create sub-catchment within a basin by using provided point datasets (river gauge location). In total, I have 12 measuring points (i.e 12 pairs of x and y coordinates) within my basin. I want to delineate all catchments within basin on the basis of provided coordinates ( not on the basis of minimum or maximum cell that r.watershed has.) I am looking for the function in 'hydrology' extension tool of ArcMap.

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