Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Integration.Test/GrassCoverErosionOutwardsWaveConditionsCalculationActivityIntegrationTest.cs
===================================================================
diff -u -r0f4f01f490bf62e20c119ef3eb015385c0bdcf9d -r84e9d27d2d538fcfd5d5a6c1198486b1d37c2058
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Integration.Test/GrassCoverErosionOutwardsWaveConditionsCalculationActivityIntegrationTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationActivityIntegrationTest.cs)	(revision 0f4f01f490bf62e20c119ef3eb015385c0bdcf9d)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Integration.Test/GrassCoverErosionOutwardsWaveConditionsCalculationActivityIntegrationTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationActivityIntegrationTest.cs)	(revision 84e9d27d2d538fcfd5d5a6c1198486b1d37c2058)
@@ -151,7 +151,7 @@
                                                                                           failureMechanism,
                                                                                           assessmentSection);
 
-            RoundedDouble[] waterLevels = GetWaterLevels(calculation, assessmentSection).ToArray();
+            RoundedDouble[] waterLevels = GetWaterLevels(calculation, failureMechanism, assessmentSection).ToArray();
             int nrOfCalculators = waterLevels.Length;
 
             var mockRepository = new MockRepository();
@@ -202,7 +202,7 @@
 
             var waveConditionsCosineCalculator = new TestWaveConditionsCosineCalculator();
 
-            RoundedDouble[] waterLevels = GetWaterLevels(calculation, assessmentSection).ToArray();
+            RoundedDouble[] waterLevels = GetWaterLevels(calculation, failureMechanism, assessmentSection).ToArray();
             int nrOfCalculators = waterLevels.Length;
 
             var mockRepository = new MockRepository();
@@ -285,7 +285,7 @@
                 TestHelper.AssertLogMessages(() => activity.Run(), messages =>
                 {
                     string[] msgs = messages.ToArray();
-                    RoundedDouble firstWaterLevel = GetWaterLevels(calculation, assessmentSection).First();
+                    RoundedDouble firstWaterLevel = GetWaterLevels(calculation, failureMechanism, assessmentSection).First();
 
                     Assert.AreEqual(8, msgs.Length);
                     Assert.AreEqual($"Golfcondities berekenen voor '{calculation.Name}' is gestart.", msgs[0]);
@@ -361,7 +361,7 @@
                                                                                           failureMechanism,
                                                                                           assessmentSection);
 
-            int nrOfCalculators = GetWaterLevels(calculation, assessmentSection).Count();
+            int nrOfCalculators = GetWaterLevels(calculation, failureMechanism, assessmentSection).Count();
 
             var mockRepository = new MockRepository();
             var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
@@ -403,7 +403,7 @@
                 LastErrorFileContent = lastErrorFileContent
             };
 
-            int nrOfCalculators = GetWaterLevels(calculation, assessmentSection).Count();
+            int nrOfCalculators = GetWaterLevels(calculation, failureMechanism, assessmentSection).Count();
 
             var mockRepository = new MockRepository();
             var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
@@ -450,7 +450,7 @@
                 LastErrorFileContent = lastErrorFileContent
             };
 
-            int nrOfCalculators = GetWaterLevels(calculation, assessmentSection).Count();
+            int nrOfCalculators = GetWaterLevels(calculation, failureMechanism, assessmentSection).Count();
 
             var mockRepository = new MockRepository();
             var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
@@ -485,7 +485,7 @@
                                                                                           validFilePath,
                                                                                           failureMechanism,
                                                                                           assessmentSection);
-            int nrOfCalculators = GetWaterLevels(calculation, assessmentSection).Count();
+            int nrOfCalculators = GetWaterLevels(calculation, failureMechanism, assessmentSection).Count();
 
             var mockRepository = new MockRepository();
             var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
@@ -522,7 +522,7 @@
                                                                                           validFilePath,
                                                                                           failureMechanism,
                                                                                           assessmentSection);
-            int nrOfCalculators = GetWaterLevels(calculation, assessmentSection).Count();
+            int nrOfCalculators = GetWaterLevels(calculation, failureMechanism, assessmentSection).Count();
 
             var mockRepository = new MockRepository();
             var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
@@ -559,7 +559,7 @@
                                                                                           validFilePath,
                                                                                           failureMechanism,
                                                                                           assessmentSection);
-            int nrOfCalculators = GetWaterLevels(calculation, assessmentSection).Count();
+            int nrOfCalculators = GetWaterLevels(calculation, failureMechanism, assessmentSection).Count();
 
             var mockRepository = new MockRepository();
             var calculatorFactory = mockRepository.StrictMock<IHydraRingCalculatorFactory>();
@@ -629,10 +629,10 @@
         }
 
         private static IEnumerable<RoundedDouble> GetWaterLevels(GrassCoverErosionOutwardsWaveConditionsCalculation calculation,
+                                                                 GrassCoverErosionOutwardsFailureMechanism failureMechanism,
                                                                  IAssessmentSection assessmentSection)
         {
-            return calculation.InputParameters.GetWaterLevels(assessmentSection.WaterLevelCalculationsForLowerLimitNorm.First().Output?.Result
-                                                              ?? RoundedDouble.NaN);
+            return calculation.InputParameters.GetWaterLevels(failureMechanism.GetNormativeAssessmentLevel(assessmentSection, calculation.InputParameters.HydraulicBoundaryLocation));
         }
     }
 }
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