Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsOutput.cs
===================================================================
diff -u -ra64e778ac45d89e0bc35900b5c5b4a85e1f24089 -re7f6578ada32ed199d2b028ebb5eaeb691344592
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsOutput.cs	(.../GrassCoverErosionInwardsOutput.cs)	(revision a64e778ac45d89e0bc35900b5c5b4a85e1f24089)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsOutput.cs	(.../GrassCoverErosionInwardsOutput.cs)	(revision e7f6578ada32ed199d2b028ebb5eaeb691344592)
@@ -28,7 +28,7 @@
     /// <summary>
     /// The overall result of a grass cover erosion inwards assessment.
     /// </summary>
-    public class GrassCoverErosionInwardsOutput : Observable, ICalculationOutput
+    public class GrassCoverErosionInwardsOutput : Observable, ICalculationOutput, ICloneable
     {
         /// <summary>
         /// Creates a new instance of <see cref="GrassCoverErosionInwardsOutput"/>.
@@ -54,16 +54,27 @@
         /// <summary>
         /// Gets the overtopping output.
         /// </summary>
-        public OvertoppingOutput OvertoppingOutput { get; }
+        public OvertoppingOutput OvertoppingOutput { get; private set; }
 
         /// <summary>
         /// Gets the dike height output.
         /// </summary>
-        public DikeHeightOutput DikeHeightOutput { get; }
+        public DikeHeightOutput DikeHeightOutput { get; private set; }
 
         /// <summary>
         /// Gets the overtopping rate output.
         /// </summary>
-        public OvertoppingRateOutput OvertoppingRateOutput { get; }
+        public OvertoppingRateOutput OvertoppingRateOutput { get; private set; }
+
+        public object Clone()
+        {
+            var clone = (GrassCoverErosionInwardsOutput) MemberwiseClone();
+
+            clone.OvertoppingOutput = (OvertoppingOutput) OvertoppingOutput.Clone();
+            clone.DikeHeightOutput = (DikeHeightOutput) DikeHeightOutput.Clone();
+            clone.OvertoppingRateOutput = (OvertoppingRateOutput) OvertoppingRateOutput.Clone();
+
+            return clone;
+        }
     }
 }
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