Index: wflow-py/wflow/wflow_sbm.py
===================================================================
diff -u -r74e8e824eecc1f1fa4720e2e8de6b70214f18209 -rf660893440d321b9250258a349112048127247df
--- wflow-py/wflow/wflow_sbm.py	(.../wflow_sbm.py)	(revision 74e8e824eecc1f1fa4720e2e8de6b70214f18209)
+++ wflow-py/wflow/wflow_sbm.py	(.../wflow_sbm.py)	(revision f660893440d321b9250258a349112048127247df)
@@ -1364,6 +1364,8 @@
 
                 if deltasup < self.breakoff or self.nrit >= self.maxitsupply:
                     break
+
+            self.InflowKinWaveCell = upstream(self.TopoLdd, self.SurfaceRunoff)
             self.updateRunOff()
         else:
             self.SurfaceRunoffMM = self.SurfaceRunoff * self.QMMConv  # SurfaceRunoffMM (mm) from SurfaceRunoff (m3/s)