Index: wflow-py/wflow/wflow_sbm.py
===================================================================
diff -u -r0767337f4510ceba10d041dfb6639e069503798d -rf2484dc64e6452cff5d8b28a534c090bff090838
--- wflow-py/wflow/wflow_sbm.py	(.../wflow_sbm.py)	(revision 0767337f4510ceba10d041dfb6639e069503798d)
+++ wflow-py/wflow/wflow_sbm.py	(.../wflow_sbm.py)	(revision f2484dc64e6452cff5d8b28a534c090bff090838)
@@ -1311,6 +1311,8 @@
                                                  timestepsecs=self.timestepsecs)
             self.OutflowDwn = upstream(self.TopoLddOrg,cover(self.Outflow,scalar(0.0)))
             self.Inflow = self.OutflowDwn + cover(self.Inflow,self.ZeroMap)
+        else:
+            self.Inflow= cover(self.Inflow,self.ZeroMap)
 
 
         self.ExfiltWaterCubic = self.ExfiltWater * self.ToCubic