Guidance for calibrating/"gut checking" seasonal and annual water yield results?

Hi, I’m wondering if anyone can give me some quick easy tips for “gut checking” the results of the seasonal water yield and annual water yield model outputs against known flow data, for example water year reports or flow data from USGS gages, just as a quick back-of-the-envelope method of QAQC for initial model run output against reality. Can you convert the qb (mean baseflow in mm) result from SWY model into a mean annual baseflow in cfs? And is there an easy way to intepret what proportion of streamflow that is baseflow vs stormflow? Thanks, Kristen