Index: Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsCalculation.cs
===================================================================
diff -u -ra4e3b2745a48598260107bb5bfca7485205cdcc2 -r4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42
--- Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsCalculation.cs	(.../GrassCoverErosionInwardsCalculation.cs)	(revision a4e3b2745a48598260107bb5bfca7485205cdcc2)
+++ Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsCalculation.cs	(.../GrassCoverErosionInwardsCalculation.cs)	(revision 4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42)
@@ -34,10 +34,11 @@
         /// <summary>
         /// Creates a new instance of <see cref="GrassCoverErosionInwardsCalculation"/>.
         /// </summary>
-        public GrassCoverErosionInwardsCalculation()
+        /// <param name="norm">The norm to use in the calculation input.</param>
+        public GrassCoverErosionInwardsCalculation(double norm)
         {
             Name = RiskeerCommonDataResources.Calculation_DefaultName;
-            InputParameters = new GrassCoverErosionInwardsInput();
+            InputParameters = new GrassCoverErosionInwardsInput(norm);
             Comments = new Comment();
         }
 
Index: Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsCalculationScenario.cs
===================================================================
diff -u -ra4e3b2745a48598260107bb5bfca7485205cdcc2 -r4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42
--- Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsCalculationScenario.cs	(.../GrassCoverErosionInwardsCalculationScenario.cs)	(revision a4e3b2745a48598260107bb5bfca7485205cdcc2)
+++ Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsCalculationScenario.cs	(.../GrassCoverErosionInwardsCalculationScenario.cs)	(revision 4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42)
@@ -35,7 +35,9 @@
         /// <summary>
         /// Creates a new instance of <see cref="GrassCoverErosionInwardsCalculationScenario"/>.
         /// </summary>
-        public GrassCoverErosionInwardsCalculationScenario()
+        /// <param name="norm">The norm to use in the calculation input.</param>
+        public GrassCoverErosionInwardsCalculationScenario(double norm) 
+            : base(norm)
         {
             IsRelevant = true;
             contribution = new RoundedDouble(CalculationScenarioHelper.ContributionNumberOfDecimalPlaces, 1);
Index: Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsInput.cs
===================================================================
diff -u -r0fb4d7721a6fd350aeee563c018c429cb0eb23ee -r4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42
--- Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsInput.cs	(.../GrassCoverErosionInwardsInput.cs)	(revision 0fb4d7721a6fd350aeee563c018c429cb0eb23ee)
+++ Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsInput.cs	(.../GrassCoverErosionInwardsInput.cs)	(revision 4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42)
@@ -51,7 +51,8 @@
         /// <summary>
         /// Creates a new instance of <see cref="GrassCoverErosionInwardsInput"/>.
         /// </summary>
-        public GrassCoverErosionInwardsInput()
+        /// <param name="norm">The norm to use.</param>
+        public GrassCoverErosionInwardsInput(double norm)
         {
             orientation = new RoundedDouble(orientationNumberOfDecimals);
             dikeHeight = new RoundedDouble(2);
@@ -65,6 +66,9 @@
             };
             DikeHeightCalculationType = DikeHeightCalculationType.NoCalculation;
             OvertoppingRateCalculationType = OvertoppingRateCalculationType.NoCalculation;
+
+            DikeHeightReliabilityIndex = norm;
+            OvertoppingRateReliabilityIndex = norm;
         }
 
         /// <summary>
Index: Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsPlugin.cs
===================================================================
diff -u -r2503894f449e6a2d24fe0cf15ff1d8a6cd831a3c -r4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42
--- Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsPlugin.cs	(.../GrassCoverErosionInwardsPlugin.cs)	(revision 2503894f449e6a2d24fe0cf15ff1d8a6cd831a3c)
+++ Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsPlugin.cs	(.../GrassCoverErosionInwardsPlugin.cs)	(revision 4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42)
@@ -817,7 +817,7 @@
 
         private static void AddCalculation(GrassCoverErosionInwardsCalculationGroupContext context)
         {
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(context.AssessmentSection.FailureMechanismContribution.Norm)
             {
                 Name = NamingHelper.GetUniqueName(context.WrappedData.Children, RiskeerCommonDataResources.Calculation_DefaultName, c => c.Name)
             };
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationScenarioTest.cs
===================================================================
diff -u -ra4e3b2745a48598260107bb5bfca7485205cdcc2 -r4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationScenarioTest.cs	(.../GrassCoverErosionInwardsCalculationScenarioTest.cs)	(revision a4e3b2745a48598260107bb5bfca7485205cdcc2)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationScenarioTest.cs	(.../GrassCoverErosionInwardsCalculationScenarioTest.cs)	(revision 4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42)
@@ -37,7 +37,7 @@
         public void Constructor_ExpectedValues()
         {
             // Call
-            var scenario = new GrassCoverErosionInwardsCalculationScenario();
+            var scenario = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
 
             // Assert
             Assert.IsInstanceOf<GrassCoverErosionInwardsCalculation>(scenario);
@@ -53,7 +53,7 @@
         public void Contribution_SetInvalidValue_ThrowArgumentException(double newValue)
         {
             // Setup
-            var calculationScenario = new GrassCoverErosionInwardsCalculationScenario();
+            var calculationScenario = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
 
             // Call
             void Call() => calculationScenario.Contribution = (RoundedDouble) newValue;
@@ -68,7 +68,7 @@
         public void Contribution_SetValidValue_ValueSet(double newValue)
         {
             // Setup
-            var calculationScenario = new GrassCoverErosionInwardsCalculationScenario();
+            var calculationScenario = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
 
             // Call
             calculationScenario.Contribution = (RoundedDouble) newValue;
@@ -109,7 +109,7 @@
         {
             var random = new Random(21);
 
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 Name = "A Name",
                 Comments =
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationTest.cs
===================================================================
diff -u -ra4e3b2745a48598260107bb5bfca7485205cdcc2 -r4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationTest.cs	(.../GrassCoverErosionInwardsCalculationTest.cs)	(revision a4e3b2745a48598260107bb5bfca7485205cdcc2)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationTest.cs	(.../GrassCoverErosionInwardsCalculationTest.cs)	(revision 4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using System.Collections.Generic;
 using Core.Common.Base;
 using Core.Common.Data.TestUtil;
@@ -33,10 +34,13 @@
     public class GrassCoverErosionInwardsCalculationTest
     {
         [Test]
-        public void Constructor_DefaultPropertyValuesAreSet()
+        public void Constructor_ExpectedValues()
         {
+            // Setup
+            double norm = new Random(21).NextDouble();
+            
             // Call
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(norm);
 
             // Assert
             Assert.IsInstanceOf<ICalculation<GrassCoverErosionInwardsInput>>(calculation);
@@ -47,6 +51,8 @@
             Assert.IsNull(calculation.Comments.Body);
             Assert.IsNull(calculation.Output);
             Assert.IsNull(calculation.InputParameters.DikeProfile);
+            Assert.AreEqual(norm, calculation.InputParameters.DikeHeightReliabilityIndex);
+            Assert.AreEqual(norm, calculation.InputParameters.OvertoppingRateReliabilityIndex);
         }
 
         [Test]
@@ -56,7 +62,7 @@
         public void Properties_Name_ReturnsExpectedValues(string name)
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
 
             // Call
             calculation.Name = name;
@@ -72,7 +78,7 @@
         public void Property_Comments_ReturnsExpectedValues(string comments)
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
 
             // Call
             calculation.Comments.Body = comments;
@@ -85,7 +91,7 @@
         public void ClearOutput_Always_SetsOutputToNull()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = new TestGrassCoverErosionInwardsOutput()
             };
@@ -101,7 +107,7 @@
         public void HasOutput_OutputNull_ReturnsFalse()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = null
             };
@@ -117,7 +123,7 @@
         public void HasOutput_OutputSet_ReturnsTrue()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = new TestGrassCoverErosionInwardsOutput()
             };
@@ -177,7 +183,7 @@
                                                                     new TestDikeHeightOutput(new TestGeneralResultFaultTreeIllustrationPoint()),
                                                                     new TestOvertoppingRateOutput(new TestGeneralResultFaultTreeIllustrationPoint()));
 
-            var calculation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = originalOutput
             };
@@ -196,18 +202,18 @@
         public void ClearIllustrationPoints_CalculationWithoutOutput_DoesNotThrow()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
 
             // Call
-            TestDelegate call = () => calculation.ClearIllustrationPoints();
+            void Call() => calculation.ClearIllustrationPoints();
 
             // Assert
-            Assert.DoesNotThrow(call);
+            Assert.DoesNotThrow(Call);
         }
 
         private static GrassCoverErosionInwardsCalculation CreateRandomCalculationWithoutOutput()
         {
-            var calculation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Comments =
                 {
@@ -235,7 +241,7 @@
             var overtoppingRateOutputWithoutGeneralResult = new TestOvertoppingRateOutput(1.0);
             var overtoppingRateOutputWithGeneralResult = new TestOvertoppingRateOutput(new TestGeneralResultFaultTreeIllustrationPoint());
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
@@ -251,7 +257,7 @@
                 }, false)
                 .SetName("OutputSufficientScenario1");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
@@ -264,18 +270,18 @@
                 }, false)
                 .SetName("OutputSufficientScenario2");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     Output = new GrassCoverErosionInwardsOutput(overtoppingOutputWithoutGeneralResult,
                                                                 null,
                                                                 null)
                 }, false)
                 .SetName("OutputSufficientScenario3");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(), true)
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN), true)
                 .SetName("NoOutputScenario1");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
@@ -285,7 +291,7 @@
                 }, true)
                 .SetName("NoOutputScenario2");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
@@ -298,15 +304,15 @@
                 }, true)
                 .SetName("NoOutputScenario3");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     Output = new GrassCoverErosionInwardsOutput(overtoppingOutputWithGeneralResult,
                                                                 null,
                                                                 null)
                 }, true)
                 .SetName("OvertoppingOutputWithRedundantGeneralResult");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
@@ -318,7 +324,7 @@
                 }, true)
                 .SetName("OvertoppingOutputWithMissingGeneralResult");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
@@ -330,7 +336,7 @@
                 }, true)
                 .SetName("DikeHeightOutputWithRedundantGeneralResult");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
@@ -343,7 +349,7 @@
                 }, true)
                 .SetName("DikeHeightOutputWithMissingGeneralResult");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
@@ -355,7 +361,7 @@
                 }, true)
                 .SetName("OvertoppingRateOutputWithRedundantGeneralResult");
 
-            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation
+            yield return new TestCaseData(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     InputParameters =
                     {
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsInputTest.cs
===================================================================
diff -u -r0fb4d7721a6fd350aeee563c018c429cb0eb23ee -r4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsInputTest.cs	(.../GrassCoverErosionInwardsInputTest.cs)	(revision 0fb4d7721a6fd350aeee563c018c429cb0eb23ee)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsInputTest.cs	(.../GrassCoverErosionInwardsInputTest.cs)	(revision 4cb44d36bec6a6f1b4c1c2ff2db086b9996a2b42)
@@ -132,8 +132,10 @@
                 StandardDeviation = (RoundedDouble) 0.0006
             };
 
+            double norm = new Random(21).NextDouble();
+
             // Call
-            var input = new GrassCoverErosionInwardsInput();
+            var input = new GrassCoverErosionInwardsInput(norm);
 
             // Assert
             Assert.IsInstanceOf<CloneableObservable>(input);
@@ -149,6 +151,10 @@
 
             Assert.IsFalse(input.ShouldDikeHeightBeCalculated);
             Assert.IsFalse(input.ShouldOvertoppingRateBeCalculated);
+            
+            Assert.AreEqual(norm, input.DikeHeightReliabilityIndex);
+            Assert.AreEqual(norm, input.OvertoppingRateReliabilityIndex);
+            
             Assert.AreEqual(DikeHeightCalculationType.NoCalculation, input.DikeHeightCalculationType);
             Assert.AreEqual(OvertoppingRateCalculationType.NoCalculation, input.OvertoppingRateCalculationType);
 
@@ -161,7 +167,7 @@
             // Setup
             DikeProfile dikeProfile = CreateTestDikeProfile();
 
-            var input = new GrassCoverErosionInwardsInput
+            var input = new GrassCoverErosionInwardsInput(double.NaN)
             {
                 DikeProfile = dikeProfile
             };
@@ -178,7 +184,7 @@
         public void DikeProfile_SetNewValue_InputSyncedAccordingly(DikeProfile newDikeProfile)
         {
             // Setup
-            var input = new GrassCoverErosionInwardsInput();
+            var input = new GrassCoverErosionInwardsInput(double.NaN);
 
             // Call
             input.DikeProfile = newDikeProfile;
@@ -196,7 +202,7 @@
         public void Orientation_SetNewValue_ValueIsRounded(double validOrientation)
         {
             // Setup
-            var input = new GrassCoverErosionInwardsInput();
+            var input = new GrassCoverErosionInwardsInput(double.NaN);
 
             int originalNumberOfDecimalPlaces = input.Orientation.NumberOfDecimalPlaces;
 
@@ -219,20 +225,21 @@
         public void Orientation_SetInvalidValue_ThrowsArgumentOutOfRangeException(double invalidOrientation)
         {
             // Setup
-            var input = new GrassCoverErosionInwardsInput();
+            var input = new GrassCoverErosionInwardsInput(double.NaN);
 
             // Call
-            TestDelegate call = () => input.Orientation = (RoundedDouble) invalidOrientation;
+            void Call() => input.Orientation = (RoundedDouble) invalidOrientation;
 
             // Assert
-            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(call, "De waarde voor de oriëntatie moet in het bereik [0,00, 360,00] liggen.");
+            const string expectedMessage = "De waarde voor de oriëntatie moet in het bereik [0,00, 360,00] liggen.";
+            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(Call, expectedMessage);
         }
 
         [Test]
         public void DikeHeight_SetNewValue_ValueIsRounded()
         {
             // Setup
-            var input = new GrassCoverErosionInwardsInput();
+            var input = new GrassCoverErosionInwardsInput(double.NaN);
 
             int originalNumberOfDecimalPlaces = input.DikeHeight.NumberOfDecimalPlaces;
 
@@ -249,7 +256,7 @@
         {
             // Setup
             var random = new Random(22);
-            var input = new GrassCoverErosionInwardsInput();
+            var input = new GrassCoverErosionInwardsInput(double.NaN);
             RoundedDouble mean = random.NextRoundedDouble(0.01, double.MaxValue);
             RoundedDouble standardDeviation = random.NextRoundedDouble(0.01, double.MaxValue);
             var expectedDistribution = new LogNormalDistribution(4)
@@ -276,7 +283,7 @@
         public void IsDikeProfileInputSynchronized_DikeProfileNotSet_ReturnFalse()
         {
             // Setup
-            var input = new GrassCoverErosionInwardsInput();
+            var input = new GrassCoverErosionInwardsInput(double.NaN);
 
             // Call
             bool synchronized = input.IsDikeProfileInputSynchronized;
@@ -289,7 +296,7 @@
         public void IsDikeProfileInputSynchronized_InputParametersAndDikeProfileInSync_ReturnTrue()
         {
             // Setup
-            var input = new GrassCoverErosionInwardsInput
+            var input = new GrassCoverErosionInwardsInput(double.NaN)
             {
                 DikeProfile = DikeProfileTestFactory.CreateDikeProfile(new[]
                 {
@@ -312,7 +319,7 @@
             // Setup
             DikeProfile dikeProfile = CreateTestDikeProfile();
 
-            var input = new GrassCoverErosionInwardsInput
+            var input = new GrassCoverErosionInwardsInput(double.NaN)
             {
                 DikeProfile = dikeProfile
             };
@@ -330,7 +337,7 @@
         public void SynchronizeDikeProfileInput_DikeProfileNotSet_ExpectedValues()
         {
             // Setup
-            var input = new GrassCoverErosionInwardsInput();
+            var input = new GrassCoverErosionInwardsInput(double.NaN);
 
             // Call
             input.SynchronizeDikeProfileInput();
@@ -346,7 +353,7 @@
             // Setup
             DikeProfile dikeProfile = CreateTestDikeProfile();
 
-            var input = new GrassCoverErosionInwardsInput
+            var input = new GrassCoverErosionInwardsInput(double.NaN)
             {
                 DikeProfile = dikeProfile
             };
@@ -364,7 +371,7 @@
         public void Clone_AllPropertiesSet_ReturnNewInstanceWithCopiedValues()
         {
             // Setup
-            var original = new GrassCoverErosionInwardsInput();
+            var original = new GrassCoverErosionInwardsInput(double.NaN);
 
             GrassCoverErosionInwardsTestDataGenerator.SetRandomDataToGrassCoverErosionInwardsInput(original);
 
@@ -379,7 +386,7 @@
         public void Clone_NotAllPropertiesSet_ReturnNewInstanceWithCopiedValues()
         {
             // Setup
-            var original = new GrassCoverErosionInwardsInput();
+            var original = new GrassCoverErosionInwardsInput(double.NaN);
 
             GrassCoverErosionInwardsTestDataGenerator.SetRandomDataToGrassCoverErosionInwardsInput(original);
 
@@ -395,7 +402,7 @@
 
         private static void AssertDikeProfileInput(DikeProfile expectedDikeProfile, GrassCoverErosionInwardsInput input)
         {
-            var defaultInput = new GrassCoverErosionInwardsInput();
+            var defaultInput = new GrassCoverErosionInwardsInput(double.NaN);
 
             if (expectedDikeProfile == null)
             {