Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil.Test/MacroStabilityInwardsTestDataGeneratorTest.cs
===================================================================
diff -u -rc4136f9deafeaf014ebb35c316f10bea91ee4d2e -r52d85f2cd90bbcdc99dda93f70daf1edae435516
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil.Test/MacroStabilityInwardsTestDataGeneratorTest.cs	(.../MacroStabilityInwardsTestDataGeneratorTest.cs)	(revision c4136f9deafeaf014ebb35c316f10bea91ee4d2e)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil.Test/MacroStabilityInwardsTestDataGeneratorTest.cs	(.../MacroStabilityInwardsTestDataGeneratorTest.cs)	(revision 52d85f2cd90bbcdc99dda93f70daf1edae435516)
@@ -201,6 +201,9 @@
             Assert.IsNaN(inputExtreme.PhreaticLineOffsetBelowDikeTopAtPolder);
             Assert.IsNaN(inputExtreme.PhreaticLineOffsetBelowShoulderBaseInside);
             Assert.IsNaN(inputExtreme.PhreaticLineOffsetBelowDikeToeAtPolder);
+
+            Assert.IsNaN(input.ZoneBoundaryLeft);
+            Assert.IsNaN(input.ZoneBoundaryRight);
         }
 
         [Test]
@@ -260,6 +263,9 @@
             Assert.AreEqual(double.NegativeInfinity, inputExtreme.PhreaticLineOffsetBelowDikeTopAtPolder);
             Assert.AreEqual(double.PositiveInfinity, inputExtreme.PhreaticLineOffsetBelowShoulderBaseInside);
             Assert.AreEqual(double.PositiveInfinity, inputExtreme.PhreaticLineOffsetBelowDikeToeAtPolder);
+
+            Assert.AreEqual(double.NegativeInfinity, input.ZoneBoundaryLeft);
+            Assert.AreEqual(double.PositiveInfinity, input.ZoneBoundaryRight);
         }
 
         private static void AssertCalculation(MacroStabilityInwardsCalculationScenario calculation,
@@ -356,6 +362,11 @@
             Assert.AreEqual(15.22, inputExtreme.PhreaticLineOffsetBelowDikeTopAtPolder, inputExtreme.PhreaticLineOffsetBelowDikeTopAtPolder.GetAccuracy());
             Assert.AreEqual(15.23, inputExtreme.PhreaticLineOffsetBelowShoulderBaseInside, inputExtreme.PhreaticLineOffsetBelowShoulderBaseInside.GetAccuracy());
             Assert.AreEqual(15.24, inputExtreme.PhreaticLineOffsetBelowDikeToeAtPolder, inputExtreme.PhreaticLineOffsetBelowDikeToeAtPolder.GetAccuracy());
+
+            Assert.IsTrue(input.CreateZones);
+            Assert.AreEqual(MacroStabilityInwardsZoningBoundariesDeterminationType.Manual, input.ZoningBoundariesDeterminationType);
+            Assert.AreEqual(0.0, input.ZoneBoundaryLeft, input.ZoneBoundaryLeft.GetAccuracy());
+            Assert.AreEqual(100.0, input.ZoneBoundaryRight, input.ZoneBoundaryRight.GetAccuracy());
         }
 
         private static void AssertCalculationsHasSameHydraulicBoundaryLocation(CalculationGroup calculationGroup,
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil/MacroStabilityInwardsCloneAssert.cs
===================================================================
diff -u -r7b8a021f38d77546b7c3318f5f0dedda63168f91 -r52d85f2cd90bbcdc99dda93f70daf1edae435516
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil/MacroStabilityInwardsCloneAssert.cs	(.../MacroStabilityInwardsCloneAssert.cs)	(revision 7b8a021f38d77546b7c3318f5f0dedda63168f91)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil/MacroStabilityInwardsCloneAssert.cs	(.../MacroStabilityInwardsCloneAssert.cs)	(revision 52d85f2cd90bbcdc99dda93f70daf1edae435516)
@@ -126,6 +126,9 @@
             CoreCloneAssert.AreObjectClones(original.RightGrid, clone.RightGrid, AreClones);
 
             Assert.AreEqual(original.CreateZones, clone.CreateZones);
+            Assert.AreEqual(original.ZoningBoundariesDeterminationType, clone.ZoningBoundariesDeterminationType);
+            Assert.AreEqual(original.ZoneBoundaryLeft, clone.ZoneBoundaryLeft);
+            Assert.AreEqual(original.ZoneBoundaryRight, clone.ZoneBoundaryRight);
         }
 
         /// <summary>
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil/MacroStabilityInwardsTestDataGenerator.cs
===================================================================
diff -u -rc4136f9deafeaf014ebb35c316f10bea91ee4d2e -r52d85f2cd90bbcdc99dda93f70daf1edae435516
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil/MacroStabilityInwardsTestDataGenerator.cs	(.../MacroStabilityInwardsTestDataGenerator.cs)	(revision c4136f9deafeaf014ebb35c316f10bea91ee4d2e)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.TestUtil/MacroStabilityInwardsTestDataGenerator.cs	(.../MacroStabilityInwardsTestDataGenerator.cs)	(revision 52d85f2cd90bbcdc99dda93f70daf1edae435516)
@@ -189,7 +189,11 @@
                     MaximumSliceWidth = (RoundedDouble) 0.6,
                     TangentLineZTop = (RoundedDouble) 10,
                     TangentLineZBottom = (RoundedDouble) 1,
-                    TangentLineNumber = 5
+                    TangentLineNumber = 5,
+                    CreateZones = true,
+                    ZoningBoundariesDeterminationType = MacroStabilityInwardsZoningBoundariesDeterminationType.Manual,
+                    ZoneBoundaryLeft = (RoundedDouble) 0,
+                    ZoneBoundaryRight = (RoundedDouble) 100
                 }
             };
 
@@ -254,6 +258,9 @@
             inputExtreme.PhreaticLineOffsetBelowShoulderBaseInside = RoundedDouble.NaN;
             inputExtreme.PhreaticLineOffsetBelowDikeToeAtPolder = RoundedDouble.NaN;
 
+            input.ZoneBoundaryLeft = RoundedDouble.NaN;
+            input.ZoneBoundaryRight = RoundedDouble.NaN;
+
             return calculation;
         }
 
@@ -323,6 +330,9 @@
             inputExtreme.PhreaticLineOffsetBelowShoulderBaseInside = (RoundedDouble) double.PositiveInfinity;
             inputExtreme.PhreaticLineOffsetBelowDikeToeAtPolder = (RoundedDouble) double.PositiveInfinity;
 
+            input.ZoneBoundaryLeft = (RoundedDouble) double.NegativeInfinity;
+            input.ZoneBoundaryRight = (RoundedDouble) double.PositiveInfinity;
+
             return calculation;
         }
 
@@ -586,6 +596,9 @@
             input.RightGrid.NumberOfVerticalPoints = random.Next(1, 100);
 
             input.CreateZones = random.NextBoolean();
+            input.ZoningBoundariesDeterminationType = random.NextEnumValue<MacroStabilityInwardsZoningBoundariesDeterminationType>();
+            input.ZoneBoundaryLeft = random.NextRoundedDouble();
+            input.ZoneBoundaryRight = random.NextRoundedDouble();
         }
     }
 }
\ No newline at end of file