Index: Ringtoets/Revetment/src/Ringtoets.Revetment.Forms/Factories/WaveConditionsChartDataPointsFactory.cs
===================================================================
diff -u -r2548c373f81aaed2b497df18d500da52f5a50eed -rdadaa43d997676fe70eabaeaf42bd878d9d803a5
--- Ringtoets/Revetment/src/Ringtoets.Revetment.Forms/Factories/WaveConditionsChartDataPointsFactory.cs	(.../WaveConditionsChartDataPointsFactory.cs)	(revision 2548c373f81aaed2b497df18d500da52f5a50eed)
+++ Ringtoets/Revetment/src/Ringtoets.Revetment.Forms/Factories/WaveConditionsChartDataPointsFactory.cs	(.../WaveConditionsChartDataPointsFactory.cs)	(revision dadaa43d997676fe70eabaeaf42bd878d9d803a5)
@@ -217,7 +217,7 @@
         /// </returns>
         public static IEnumerable<IEnumerable<Point2D>> CreateWaterLevelsGeometryPoints(WaveConditionsInput input)
         {
-            return input?.WaterLevels
+            return input?.GetWaterLevels(input.AssessmentLevel)
                         .Select(waterLevel => CreateGeometryPoints(input, () => waterLevel))
                         .ToArray() ?? new IEnumerable<Point2D>[0];
         }
Index: Ringtoets/Revetment/test/Ringtoets.Revetment.Forms.Test/Factories/WaveConditionsChartDataPointsFactoryTest.cs
===================================================================
diff -u -r077432ea17ea347ddd489cb0905f1b5618eeb5ba -rdadaa43d997676fe70eabaeaf42bd878d9d803a5
--- Ringtoets/Revetment/test/Ringtoets.Revetment.Forms.Test/Factories/WaveConditionsChartDataPointsFactoryTest.cs	(.../WaveConditionsChartDataPointsFactoryTest.cs)	(revision 077432ea17ea347ddd489cb0905f1b5618eeb5ba)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.Forms.Test/Factories/WaveConditionsChartDataPointsFactoryTest.cs	(.../WaveConditionsChartDataPointsFactoryTest.cs)	(revision dadaa43d997676fe70eabaeaf42bd878d9d803a5)
@@ -954,17 +954,19 @@
             // Assert
             Point2D lastGeometryPoint = foreshoreProfileGeometry.Last();
 
+            IEnumerable<RoundedDouble> waterLevels = input.GetWaterLevels(input.AssessmentLevel);
+
             var expectedLines = new[]
             {
                 new[]
                 {
                     new Point2D(foreshoreProfileGeometry.First().X, 6),
-                    new Point2D(((input.WaterLevels.ElementAt(0) - lastGeometryPoint.Y) / 3) + lastGeometryPoint.X, 6)
+                    new Point2D(((waterLevels.ElementAt(0) - lastGeometryPoint.Y) / 3) + lastGeometryPoint.X, 6)
                 },
                 new[]
                 {
                     new Point2D(foreshoreProfileGeometry.First().X, 5),
-                    new Point2D(((input.WaterLevels.ElementAt(1) - lastGeometryPoint.Y) / 3) + lastGeometryPoint.X, 5)
+                    new Point2D(((waterLevels.ElementAt(1) - lastGeometryPoint.Y) / 3) + lastGeometryPoint.X, 5)
                 }
             };