Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationScenarioExtensionsTest.cs
===================================================================
diff -u -ra4e3b2745a48598260107bb5bfca7485205cdcc2 -r99389b8c7fc27efb7483fb16e5b5659e07d1a5d6
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationScenarioExtensionsTest.cs	(.../GrassCoverErosionInwardsCalculationScenarioExtensionsTest.cs)	(revision a4e3b2745a48598260107bb5bfca7485205cdcc2)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsCalculationScenarioExtensionsTest.cs	(.../GrassCoverErosionInwardsCalculationScenarioExtensionsTest.cs)	(revision 99389b8c7fc27efb7483fb16e5b5659e07d1a5d6)
@@ -48,7 +48,7 @@
         public void IsDikeProfileIntersectionWithReferenceLineInSection_LineSegmentsNull_ThrowsArgumentNullException()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculationScenario();
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
 
             // Call
             void Call() => calculation.IsDikeProfileIntersectionWithReferenceLineInSection(null);
@@ -62,7 +62,7 @@
         public void IsDikeProfileIntersectionWithReferenceLineInSection_CalculationWithoutDikeProfile_ReturnsFalse()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculationScenario();
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
 
             // Call
             bool intersects = calculation.IsDikeProfileIntersectionWithReferenceLineInSection(Enumerable.Empty<Segment2D>());
@@ -83,7 +83,7 @@
                 new Point2D(10.0, 0.0)
             });
 
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 InputParameters =
                 {
@@ -110,7 +110,7 @@
                 new Point2D(10.0, 0.0)
             });
 
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 InputParameters =
                 {
@@ -139,7 +139,7 @@
                 new Point2D(20.0, 0.0)
             });
 
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 InputParameters =
                 {
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismTest.cs
===================================================================
diff -u -ra4e3b2745a48598260107bb5bfca7485205cdcc2 -r99389b8c7fc27efb7483fb16e5b5659e07d1a5d6
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismTest.cs	(.../GrassCoverErosionInwardsFailureMechanismTest.cs)	(revision a4e3b2745a48598260107bb5bfca7485205cdcc2)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismTest.cs	(.../GrassCoverErosionInwardsFailureMechanismTest.cs)	(revision 99389b8c7fc27efb7483fb16e5b5659e07d1a5d6)
@@ -117,9 +117,9 @@
                     Children =
                     {
                         new CalculationGroup(),
-                        new GrassCoverErosionInwardsCalculation(),
+                        new GrassCoverErosionInwardsCalculation(double.NaN),
                         mocks.StrictMock<ICalculation>(),
-                        new GrassCoverErosionInwardsCalculation()
+                        new GrassCoverErosionInwardsCalculation(double.NaN)
                     }
                 }
             };
Index: Riskeer/Integration/test/Riskeer.Integration.TestUtil/TestDataGenerator.cs
===================================================================
diff -u -rc36b47c2e1e8cf948767cca33f80ad735f370ad0 -r99389b8c7fc27efb7483fb16e5b5659e07d1a5d6
--- Riskeer/Integration/test/Riskeer.Integration.TestUtil/TestDataGenerator.cs	(.../TestDataGenerator.cs)	(revision c36b47c2e1e8cf948767cca33f80ad735f370ad0)
+++ Riskeer/Integration/test/Riskeer.Integration.TestUtil/TestDataGenerator.cs	(.../TestDataGenerator.cs)	(revision 99389b8c7fc27efb7483fb16e5b5659e07d1a5d6)
@@ -317,8 +317,8 @@
                 dikeprofile2
             }, "some/path/to/dikeprofiles");
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
-            var calculationWithOutputAndDikeProfileAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
+            var calculationWithOutputAndDikeProfileAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 InputParameters =
                 {
@@ -329,7 +329,7 @@
                                                             new TestDikeHeightOutput(0, CalculationConvergence.CalculatedConverged),
                                                             new TestOvertoppingRateOutput(0, CalculationConvergence.CalculatedConverged))
             };
-            var calculationWithOutputAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation
+            var calculationWithOutputAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 InputParameters =
                 {
@@ -339,14 +339,14 @@
                                                             new TestDikeHeightOutput(0, CalculationConvergence.CalculatedConverged),
                                                             new TestOvertoppingRateOutput(0, CalculationConvergence.CalculatedConverged))
             };
-            var calculationWithHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation
+            var calculationWithHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 InputParameters =
                 {
                     HydraulicBoundaryLocation = hydraulicBoundaryLocation
                 }
             };
-            var calculationWithDikeProfileAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation
+            var calculationWithDikeProfileAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 InputParameters =
                 {
@@ -355,8 +355,8 @@
                 }
             };
 
-            var subCalculation = new GrassCoverErosionInwardsCalculation();
-            var subCalculationWithOutputAndDikeProfileAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation
+            var subCalculation = new GrassCoverErosionInwardsCalculation(double.NaN);
+            var subCalculationWithOutputAndDikeProfileAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 InputParameters =
                 {
@@ -367,7 +367,7 @@
                                                             new TestDikeHeightOutput(0, CalculationConvergence.CalculatedConverged),
                                                             new TestOvertoppingRateOutput(0, CalculationConvergence.CalculatedConverged))
             };
-            var subCalculationWithOutputAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation
+            var subCalculationWithOutputAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 InputParameters =
                 {
@@ -377,14 +377,14 @@
                                                             new TestDikeHeightOutput(0, CalculationConvergence.CalculatedConverged),
                                                             new TestOvertoppingRateOutput(0, CalculationConvergence.CalculatedConverged))
             };
-            var subCalculationWithHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation
+            var subCalculationWithHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 InputParameters =
                 {
                     HydraulicBoundaryLocation = hydraulicBoundaryLocation
                 }
             };
-            var subCalculationWithDikeProfileAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation
+            var subCalculationWithDikeProfileAndHydraulicBoundaryLocation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 InputParameters =
                 {
Index: Riskeer/Storage/src/Riskeer.Storage.Core/Read/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationEntityReadExtensions.cs
===================================================================
diff -u -rda1df87d94dcc61aa26d5f033c6bf579c2249cdd -r99389b8c7fc27efb7483fb16e5b5659e07d1a5d6
--- Riskeer/Storage/src/Riskeer.Storage.Core/Read/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationEntityReadExtensions.cs	(.../GrassCoverErosionInwardsCalculationEntityReadExtensions.cs)	(revision da1df87d94dcc61aa26d5f033c6bf579c2249cdd)
+++ Riskeer/Storage/src/Riskeer.Storage.Core/Read/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationEntityReadExtensions.cs	(.../GrassCoverErosionInwardsCalculationEntityReadExtensions.cs)	(revision 99389b8c7fc27efb7483fb16e5b5659e07d1a5d6)
@@ -51,7 +51,7 @@
                 throw new ArgumentNullException(nameof(collector));
             }
 
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 Name = entity.Name,
                 Comments =
Index: Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/CalculationGroupCreateExtensionsTest.cs
===================================================================
diff -u -rda1df87d94dcc61aa26d5f033c6bf579c2249cdd -r99389b8c7fc27efb7483fb16e5b5659e07d1a5d6
--- Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/CalculationGroupCreateExtensionsTest.cs	(.../CalculationGroupCreateExtensionsTest.cs)	(revision da1df87d94dcc61aa26d5f033c6bf579c2249cdd)
+++ Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/CalculationGroupCreateExtensionsTest.cs	(.../CalculationGroupCreateExtensionsTest.cs)	(revision 99389b8c7fc27efb7483fb16e5b5659e07d1a5d6)
@@ -413,11 +413,11 @@
             {
                 Children =
                 {
-                    new GrassCoverErosionInwardsCalculationScenario
+                    new GrassCoverErosionInwardsCalculationScenario(double.NaN)
                     {
                         Name = "A"
                     },
-                    new GrassCoverErosionInwardsCalculationScenario
+                    new GrassCoverErosionInwardsCalculationScenario(double.NaN)
                     {
                         Name = "B"
                     }
@@ -453,15 +453,15 @@
                     {
                         Name = "A"
                     },
-                    new GrassCoverErosionInwardsCalculationScenario
+                    new GrassCoverErosionInwardsCalculationScenario(double.NaN)
                     {
                         Name = "B"
                     },
                     new CalculationGroup
                     {
                         Name = "C"
                     },
-                    new GrassCoverErosionInwardsCalculationScenario
+                    new GrassCoverErosionInwardsCalculationScenario(double.NaN)
                     {
                         Name = "D"
                     }
Index: Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationScenarioCreateExtensionsTest.cs
===================================================================
diff -u -rda1df87d94dcc61aa26d5f033c6bf579c2249cdd -r99389b8c7fc27efb7483fb16e5b5659e07d1a5d6
--- Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationScenarioCreateExtensionsTest.cs	(.../GrassCoverErosionInwardsCalculationScenarioCreateExtensionsTest.cs)	(revision da1df87d94dcc61aa26d5f033c6bf579c2249cdd)
+++ Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/GrassCoverErosionInwards/GrassCoverErosionInwardsCalculationScenarioCreateExtensionsTest.cs	(.../GrassCoverErosionInwardsCalculationScenarioCreateExtensionsTest.cs)	(revision 99389b8c7fc27efb7483fb16e5b5659e07d1a5d6)
@@ -41,7 +41,7 @@
         public void Create_PersistenceRegistryNull_ThrowArgumentNullException()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculationScenario();
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
 
             // Call
             void Call() => calculation.Create(null, 0);
@@ -60,7 +60,7 @@
             var random = new Random(12);
             int order = random.Next();
             const string name = "GrassCoverErosionInwardsCalculation Name";
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 Name = name,
                 Comments =
@@ -140,7 +140,7 @@
             // Setup
             const string name = "A";
             const string comment = "B";
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 Name = name,
                 Comments =
@@ -168,7 +168,7 @@
         public void Create_NaNParameters_EntityWithNullFields()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 InputParameters =
                 {
@@ -203,7 +203,7 @@
         {
             // Setup
             DikeProfile dikeProfile = DikeProfileTestFactory.CreateDikeProfile();
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 InputParameters =
                 {
@@ -227,7 +227,7 @@
         {
             // Setup
             var hydraulicBoundaryLocation = new HydraulicBoundaryLocation(1, "A", 1, 1);
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 InputParameters =
                 {
@@ -254,7 +254,7 @@
             var overtoppingOutput = new OvertoppingOutput(random.NextDouble(), false, random.NextDouble(), null);
             var output = new GrassCoverErosionInwardsOutput(overtoppingOutput, null, null);
 
-            var calculation = new GrassCoverErosionInwardsCalculationScenario
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN)
             {
                 Output = output
             };
Index: Riskeer/Storage/test/Riskeer.Storage.Core.TestUtil/RiskeerProjectTestHelper.cs
===================================================================
diff -u -rda1df87d94dcc61aa26d5f033c6bf579c2249cdd -r99389b8c7fc27efb7483fb16e5b5659e07d1a5d6
--- Riskeer/Storage/test/Riskeer.Storage.Core.TestUtil/RiskeerProjectTestHelper.cs	(.../RiskeerProjectTestHelper.cs)	(revision da1df87d94dcc61aa26d5f033c6bf579c2249cdd)
+++ Riskeer/Storage/test/Riskeer.Storage.Core.TestUtil/RiskeerProjectTestHelper.cs	(.../RiskeerProjectTestHelper.cs)	(revision 99389b8c7fc27efb7483fb16e5b5659e07d1a5d6)
@@ -1790,7 +1790,7 @@
                 Name = "GEKB A",
                 Children =
                 {
-                    new GrassCoverErosionInwardsCalculationScenario
+                    new GrassCoverErosionInwardsCalculationScenario(double.NaN)
                     {
                         Name = "Calculation 1",
                         Comments =
@@ -1822,7 +1822,7 @@
                                                                     new DikeHeightOutput(0.56, 0.05, 2, 0.06, 3, CalculationConvergence.CalculatedConverged, null),
                                                                     new OvertoppingRateOutput(0.57, 0.07, 4, 0.08, 5, CalculationConvergence.CalculatedConverged, null))
                     },
-                    new GrassCoverErosionInwardsCalculationScenario
+                    new GrassCoverErosionInwardsCalculationScenario(double.NaN)
                     {
                         Name = "Calculation 2",
                         Comments =
@@ -1864,7 +1864,7 @@
                 Name = "GEKB B"
             });
             failureMechanism.CalculationsGroup.Children.Add(
-                new GrassCoverErosionInwardsCalculationScenario
+                new GrassCoverErosionInwardsCalculationScenario(double.NaN)
                 {
                     Name = "Calculation 2",
                     Comments =