--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/uinfo/CalculationSelectUinfo.java	Tue Jun 26 16:17:30 2018 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/uinfo/CalculationSelectUinfo.java	Tue Jun 26 19:48:35 2018 +0200
@@ -19,6 +19,7 @@
 import org.dive4elements.artifacts.common.utils.XMLUtils;
 import org.dive4elements.river.artifacts.resources.Resources;
 import org.dive4elements.river.artifacts.states.DefaultState;
+import org.dive4elements.river.artifacts.uinfo.inundationduration.UedauernPropertiesHelper;
 import org.w3c.dom.Element;
 
 /**
@@ -54,8 +55,17 @@
         log.debug("CalculationSelect.validate");
 
         final UINFOArtifact uinfo = (UINFOArtifact) artifact;
+        final String calcDebug = uinfo.getCalculationMode().toString();
+        if (calcDebug.equals("uinfo_inundation_duration")) {
+
+            final String river = uinfo.getRiver();
+            if (!UedauernPropertiesHelper.fileExistsForRiver(river)) {
+                throw new IllegalArgumentException("error_river_inundationdur_file_not_found");
+            }
+        }
+
         /* throws an exception if calculation mode is invalid */
-        uinfo.getCalculationMode();
+
         return true;
     }
 }
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