Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsOutputChartControlTest.cs
===================================================================
diff -u -r5c7faf8283e49113a2c7b9e17086148a99f13d2e -rfc6c54143162ceb8952b4b314e4e062b5663daf7
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsOutputChartControlTest.cs	(.../MacroStabilityInwardsOutputChartControlTest.cs)	(revision 5c7faf8283e49113a2c7b9e17086148a99f13d2e)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsOutputChartControlTest.cs	(.../MacroStabilityInwardsOutputChartControlTest.cs)	(revision fc6c54143162ceb8952b4b314e4e062b5663daf7)
@@ -22,6 +22,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Windows.Forms;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using Core.Components.Chart.Data;
 using Core.Components.Chart.Forms;
@@ -547,9 +548,9 @@
                 var waternetExtremeChartDataCollection = (ChartDataCollection) chartData[waternetZonesExtremeIndex];
                 var waternetDailyChartDataCollection = (ChartDataCollection) chartData[waternetZonesDailyIndex];
 
-                MacroStabilityInwardsOutputViewChartDataAssert.AssertWaternetChartData(calculation.InputParameters.WaternetExtreme,
+                MacroStabilityInwardsOutputViewChartDataAssert.AssertWaternetChartData(DerivedMacroStabilityInwardsInput.GetWaternetExtreme(calculation.InputParameters, RoundedDouble.NaN),
                                                                                        waternetExtremeChartDataCollection);
-                MacroStabilityInwardsOutputViewChartDataAssert.AssertWaternetChartData(calculation.InputParameters.WaternetDaily,
+                MacroStabilityInwardsOutputViewChartDataAssert.AssertWaternetChartData(DerivedMacroStabilityInwardsInput.GetWaternetDaily(calculation.InputParameters),
                                                                                        waternetDailyChartDataCollection);
 
                 IEnumerable<ChartData> waternetExtremeChartData = waternetExtremeChartDataCollection.Collection;
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.TestUtil/MacroStabilityInwardsOutputViewChartDataAssert.cs
===================================================================
diff -u -rc5213179cfd385ad108153d13068ff575200c395 -rfc6c54143162ceb8952b4b314e4e062b5663daf7
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.TestUtil/MacroStabilityInwardsOutputViewChartDataAssert.cs	(.../MacroStabilityInwardsOutputViewChartDataAssert.cs)	(revision c5213179cfd385ad108153d13068ff575200c395)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.TestUtil/MacroStabilityInwardsOutputViewChartDataAssert.cs	(.../MacroStabilityInwardsOutputViewChartDataAssert.cs)	(revision fc6c54143162ceb8952b4b314e4e062b5663daf7)
@@ -95,9 +95,9 @@
                                                                                 true,
                                                                                 actual.Collection.ElementAt(soilProfileIndex));
 
-            AssertWaternetChartData(calculationScenario.InputParameters.WaternetExtreme,
+            AssertWaternetChartData(DerivedMacroStabilityInwardsInput.GetWaternetExtreme(calculationScenario.InputParameters, RoundedDouble.NaN),
                                     (ChartDataCollection) actual.Collection.ElementAt(waternetZonesExtremeIndex));
-            AssertWaternetChartData(calculationScenario.InputParameters.WaternetDaily,
+            AssertWaternetChartData(DerivedMacroStabilityInwardsInput.GetWaternetDaily(calculationScenario.InputParameters),
                                     (ChartDataCollection) actual.Collection.ElementAt(waternetZonesDailyIndex));
         }
 
@@ -417,6 +417,7 @@
                                 slice.BottomLeftPoint.Y + offset * (slice.BottomLeftPoint.X - slice.BottomRightPoint.X) / length)
                 });
             }
+
             return areas;
         }