Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresInput.cs
===================================================================
diff -u -rcdf8d6210440a5ab6aa416a0a8f15150bfdb7740 -ra9f70d39c270923fa120d64dc1c9d9e1752fd42d
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresInput.cs	(.../StabilityPointStructuresInput.cs)	(revision cdf8d6210440a5ab6aa416a0a8f15150bfdb7740)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresInput.cs	(.../StabilityPointStructuresInput.cs)	(revision a9f70d39c270923fa120d64dc1c9d9e1752fd42d)
@@ -69,29 +69,14 @@
 
             drainCoefficient = new NormalDistribution(2)
             {
-                Mean = (RoundedDouble) 1.0, 
+                Mean = (RoundedDouble) 1.0,
                 StandardDeviation = (RoundedDouble) 0.20
             };
 
-            insideWaterLevelFailureConstruction = new NormalDistribution(2)
-            {
-                Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.1
-            };
+            insideWaterLevelFailureConstruction = new NormalDistribution(2);
+            insideWaterLevel = new NormalDistribution(2);
+            flowVelocityStructureClosable = new NormalDistribution(2);
 
-            insideWaterLevel = new NormalDistribution(2)
-            {
-                Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.1
-
-            };
-
-            flowVelocityStructureClosable = new NormalDistribution(2)
-            {
-                Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 1
-            };
-
             levelCrestStructure = new NormalDistribution(2);
             thresholdHeightOpenWeir = new NormalDistribution(2);
             areaFlowApertures = new LogNormalDistribution(2);
@@ -146,80 +131,98 @@
 
         private void SetDefaultSchematizationProperties()
         {
-            EvaluationLevel = (RoundedDouble) 0.0;
+            EvaluationLevel = (RoundedDouble) double.NaN;
             FailureProbabilityRepairClosure = (RoundedDouble) 0.0;
             InflowModelType = 0;
             LoadSchematizationType = 0;
             StructureNormalOrientation = (RoundedDouble) double.NaN;
             VerticalDistance = (RoundedDouble) double.NaN;
             LevellingCount = 0;
             ProbabilityCollisionSecondaryStructure = 0.0;
-            
+
             LevelCrestStructure = new NormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.05
+                StandardDeviation = RoundedDouble.NaN
             };
 
             ThresholdHeightOpenWeir = new NormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.1
+                StandardDeviation = RoundedDouble.NaN
             };
 
             AreaFlowApertures = new LogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.01
+                StandardDeviation = RoundedDouble.NaN
             };
 
             ConstructiveStrengthLinearLoadModel = new VariationCoefficientLogNormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             ConstructiveStrengthQuadraticLoadModel = new VariationCoefficientLogNormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             StabilityLinearLoadModel = new VariationCoefficientLogNormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             StabilityQuadraticLoadModel = new VariationCoefficientLogNormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             FailureCollisionEnergy = new VariationCoefficientLogNormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.3
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             ShipMass = new VariationCoefficientNormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.2
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             ShipVelocity = new VariationCoefficientNormalDistribution
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.2
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             BankWidth = new NormalDistribution
             {
                 Mean = RoundedDouble.NaN,
                 StandardDeviation = RoundedDouble.NaN
             };
+
+            InsideWaterLevel = new NormalDistribution
+            {
+                Mean = RoundedDouble.NaN,
+                StandardDeviation = RoundedDouble.NaN
+            };
+
+            InsideWaterLevelFailureConstruction = new NormalDistribution
+            {
+                Mean = RoundedDouble.NaN,
+                StandardDeviation = RoundedDouble.NaN
+            };
+
+            FlowVelocityStructureClosable = new NormalDistribution
+            {
+                Mean = RoundedDouble.NaN,
+                StandardDeviation = RoundedDouble.NaN
+            };
         }
 
         #region Structure / calculation
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructuresInputTest.cs
===================================================================
diff -u -r048a25c14a65ee63063d044a152f32dca20cbe15 -ra9f70d39c270923fa120d64dc1c9d9e1752fd42d
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructuresInputTest.cs	(.../StabilityPointStructuresInputTest.cs)	(revision 048a25c14a65ee63063d044a152f32dca20cbe15)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructuresInputTest.cs	(.../StabilityPointStructuresInputTest.cs)	(revision a9f70d39c270923fa120d64dc1c9d9e1752fd42d)
@@ -48,13 +48,13 @@
             var expectedInsideWaterLevelFailureConstruction = new NormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.1
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedInsideWaterLevel = new NormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.1
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedDrainCoefficient = new NormalDistribution(2)
@@ -66,67 +66,67 @@
             var expectedFlowVelocityStructureClosable = new NormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 1
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedLevelCrestStructure = new NormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.05
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedThresholdHeightOpenWeir = new NormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.1
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedAreaFlowApertures = new LogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.01
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedConstructiveStrengthLinearLoadModel = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedConstructiveStrengthQuadraticLoadModel = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedStabilityLinearLoadModel = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedStabilityQuadraticLoadModel = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedFailureCollisionEnergy = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.3
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedShipMass = new VariationCoefficientNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.2
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedShipVelocity = new VariationCoefficientNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.2
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedBankWidth = new NormalDistribution(2)
@@ -158,7 +158,7 @@
             Assert.AreEqual(0, input.ProbabilityCollisionSecondaryStructure);
             DistributionAssert.AreEqual(expectedBankWidth, input.BankWidth);
             Assert.AreEqual(2, input.EvaluationLevel.NumberOfDecimalPlaces);
-            AssertAreEqual(0, input.EvaluationLevel);
+            AssertAreEqual(double.NaN, input.EvaluationLevel);
             Assert.AreEqual(2, input.VerticalDistance.NumberOfDecimalPlaces);
             AssertAreEqual(double.NaN, input.VerticalDistance);
 
@@ -202,76 +202,70 @@
 
             // Then
             AssertAreEqual(expectedVolumicWeightWater, input.VolumicWeightWater);
-            DistributionAssert.AreEqual(structure.InsideWaterLevelFailureConstruction,
-                                        input.InsideWaterLevelFailureConstruction);
-            DistributionAssert.AreEqual(structure.InsideWaterLevel, input.InsideWaterLevel);
-
             Assert.AreEqual(2, input.FactorStormDurationOpenStructure.NumberOfDecimalPlaces);
             Assert.AreEqual(expectedFactorStormDurationOpenStructure, input.FactorStormDurationOpenStructure,
                             input.FactorStormDurationOpenStructure.GetAccuracy());
-            DistributionAssert.AreEqual(structure.FlowVelocityStructureClosable, input.FlowVelocityStructureClosable);
             DistributionAssert.AreEqual(expectedDrainCoefficient, input.DrainCoefficient);
-            Assert.AreEqual(expectedFailureProbabilityStructureWithErosion,
-                            input.FailureProbabilityStructureWithErosion);
+            Assert.AreEqual(expectedFailureProbabilityStructureWithErosion, input.FailureProbabilityStructureWithErosion);
 
             var expectedLevelCrestStructure = new NormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.05
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedThresholdHeightOpenWeir = new NormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.1
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedAreaFlowApertures = new LogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                StandardDeviation = (RoundedDouble) 0.01
+                StandardDeviation = RoundedDouble.NaN
             };
 
             var expectedConstructiveStrengthLinearLoadModel = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedConstructiveStrengthQuadraticLoadModel = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedStabilityLinearLoadModel = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedStabilityQuadraticLoadModel = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.1
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedFailureCollisionEnergy = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.3
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedShipMass = new VariationCoefficientNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.2
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedShipVelocity = new VariationCoefficientNormalDistribution(2)
             {
                 Mean = RoundedDouble.NaN,
-                CoefficientOfVariation = (RoundedDouble) 0.2
+                CoefficientOfVariation = RoundedDouble.NaN
             };
 
             var expectedBankWidth = new NormalDistribution(2)
@@ -280,6 +274,24 @@
                 StandardDeviation = RoundedDouble.NaN
             };
 
+            var expectedInsideWaterLevelFailureConstruction = new NormalDistribution(2)
+            {
+                Mean = RoundedDouble.NaN,
+                StandardDeviation = RoundedDouble.NaN
+            };
+
+            var expectedInsideWaterLevel = new NormalDistribution(2)
+            {
+                Mean = RoundedDouble.NaN,
+                StandardDeviation = RoundedDouble.NaN
+            };
+
+            var expectedFlowVelocityStructureClosable = new NormalDistribution(2)
+            {
+                Mean = RoundedDouble.NaN,
+                StandardDeviation = RoundedDouble.NaN
+            };
+
             DistributionAssert.AreEqual(expectedLevelCrestStructure, input.LevelCrestStructure);
             DistributionAssert.AreEqual(expectedThresholdHeightOpenWeir, input.ThresholdHeightOpenWeir);
             DistributionAssert.AreEqual(expectedAreaFlowApertures, input.AreaFlowApertures);
@@ -294,8 +306,11 @@
             Assert.AreEqual(0, input.LevellingCount);
             Assert.AreEqual(0, input.ProbabilityCollisionSecondaryStructure);
             DistributionAssert.AreEqual(expectedBankWidth, input.BankWidth);
+            DistributionAssert.AreEqual(expectedInsideWaterLevelFailureConstruction, input.InsideWaterLevelFailureConstruction);
+            DistributionAssert.AreEqual(expectedInsideWaterLevel, input.InsideWaterLevel);
+            DistributionAssert.AreEqual(expectedFlowVelocityStructureClosable, input.FlowVelocityStructureClosable);
             Assert.AreEqual(2, input.EvaluationLevel.NumberOfDecimalPlaces);
-            AssertAreEqual(0, input.EvaluationLevel);
+            AssertAreEqual(double.NaN, input.EvaluationLevel);
             Assert.AreEqual(2, input.VerticalDistance.NumberOfDecimalPlaces);
             AssertAreEqual(double.NaN, input.VerticalDistance);