Index: wflow-py/Sandbox/wflow_usle.py
===================================================================
diff -u -r8a65336aeed8589248dde75bafc72af772b89c6f -rf7b309fa35030cfcc148555166935edb858f7fda
--- wflow-py/Sandbox/wflow_usle.py	(.../wflow_usle.py)	(revision 8a65336aeed8589248dde75bafc72af772b89c6f)
+++ wflow-py/Sandbox/wflow_usle.py	(.../wflow_usle.py)	(revision f7b309fa35030cfcc148555166935edb858f7fda)
@@ -260,7 +260,7 @@
         sqrt(catchmenttotal(self.reallength,self.TopoLdd))
 
     self.drainlength = detdrainlength(self.TopoLdd, self.xl, self.yl)
-    self.Ddn = self.drainlength/(self.usle_c * self.DUSlope)
+    self.Ddn = self.drainlength/(max(0.001,self.usle_c) * self.DUSlope)
     self.IC = log10(self.Dup/self.Ddn)
     self.SDRMax = 0.8 #  (Vigiak et al., 2012)
     self.IC0 = 0.5
@@ -312,7 +312,7 @@
     output should also be saved here.
     """
 
-    self.logger.debug("Step: " + str(int(self.thestep + self._d_firstTimeStep)) + "/" + str(int(self._d_nrTimeSteps)))
+
     self.thestep = self.thestep + 1
 
     self.wf_updateparameters() # Read forcing and dynamic variables