Index: Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.cs
===================================================================
diff -u -rfba3c3273eae5061e1a2bf8ee19623367c885650 -r497db346515fa2044048eb7ec41f76627bab5a4d
--- Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.cs	(.../FailureMechanismResultView.cs)	(revision fba3c3273eae5061e1a2bf8ee19623367c885650)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.cs	(.../FailureMechanismResultView.cs)	(revision 497db346515fa2044048eb7ec41f76627bab5a4d)
@@ -163,7 +163,7 @@
         /// <summary>
         /// Updates the internal data in the view.
         /// </summary>
-        protected void UpdateInternalViewData()
+        protected virtual void UpdateInternalViewData()
         {
             UpdateDataGridViewDataSource();
             UpdateAssemblyData();
Index: Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismResultView.cs
===================================================================
diff -u -rb2a84d4ad12dde705c07722ef9c264b268bec879 -r497db346515fa2044048eb7ec41f76627bab5a4d
--- Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismResultView.cs	(.../GrassCoverErosionInwardsFailureMechanismResultView.cs)	(revision b2a84d4ad12dde705c07722ef9c264b268bec879)
+++ Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismResultView.cs	(.../GrassCoverErosionInwardsFailureMechanismResultView.cs)	(revision 497db346515fa2044048eb7ec41f76627bab5a4d)
@@ -93,6 +93,12 @@
             };
         }
 
+        protected override void UpdateInternalViewData()
+        {
+            UpdateVisibility();
+            base.UpdateInternalViewData();
+        }
+
         protected override AdoptableWithProfileProbabilityFailureMechanismSectionResultRow CreateFailureMechanismSectionResultRow(
             AdoptableWithProfileProbabilityFailureMechanismSectionResult sectionResult)
         {
@@ -190,6 +196,17 @@
                 nameof(AdoptableWithProfileProbabilityFailureMechanismSectionResultRow.AssemblyGroup));
         }
 
+        private void UpdateVisibility()
+        {
+            bool useLengthEffect = FailureMechanism.GeneralInput.ApplyLengthEffectInSection;
+
+            DataGridViewControl.GetColumnFromIndex(initialFailureMechanismResultProfileProbabilityIndex).Visible = useLengthEffect;
+            DataGridViewControl.GetColumnFromIndex(probabilityRefinementTypeIndex).Visible = useLengthEffect;
+            DataGridViewControl.GetColumnFromIndex(refinedProfileProbabilityIndex).Visible = useLengthEffect;
+            DataGridViewControl.GetColumnFromIndex(profileProbabilityIndex).Visible = useLengthEffect;
+            DataGridViewControl.GetColumnFromIndex(sectionNIndex).Visible = useLengthEffect;
+        }
+
         private GrassCoverErosionInwardsFailureMechanismSectionResultCalculateProbabilityStrategy CreateCalculateStrategy(
             AdoptableWithProfileProbabilityFailureMechanismSectionResult sectionResult,
             IEnumerable<GrassCoverErosionInwardsCalculationScenario> calculationScenarios)
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/Views/GrassCoverErosionInwardsFailureMechanismResultViewTest.cs
===================================================================
diff -u -r5ff5db30cf8971a12212d5b48062ab2541a356b8 -r497db346515fa2044048eb7ec41f76627bab5a4d
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/Views/GrassCoverErosionInwardsFailureMechanismResultViewTest.cs	(.../GrassCoverErosionInwardsFailureMechanismResultViewTest.cs)	(revision 5ff5db30cf8971a12212d5b48062ab2541a356b8)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/Views/GrassCoverErosionInwardsFailureMechanismResultViewTest.cs	(.../GrassCoverErosionInwardsFailureMechanismResultViewTest.cs)	(revision 497db346515fa2044048eb7ec41f76627bab5a4d)
@@ -110,11 +110,21 @@
         }
 
         [Test]
-        public void GivenFormWithMacroStabilityInwardsFailureMechanismResultView_ThenExpectedColumnsAreVisible()
+        [TestCase(true)]
+        [TestCase(false)]
+        public void GivenFormWithMacroStabilityInwardsFailureMechanismResultView_ThenExpectedColumnsAreVisible(bool useLengthEffect)
         {
             // Given
+            var failureMechanism = new GrassCoverErosionInwardsFailureMechanism
+            {
+                GeneralInput =
+                {
+                    ApplyLengthEffectInSection = useLengthEffect
+                }
+            };
+
             using (new AssemblyToolCalculatorFactoryConfig())
-            using (ShowFailureMechanismResultsView(new GrassCoverErosionInwardsFailureMechanism()))
+            using (ShowFailureMechanismResultsView(failureMechanism))
             {
                 // Then
                 DataGridView dataGridView = GetDataGridView();
@@ -162,6 +172,12 @@
                 Assert.IsTrue(dataGridView.Columns[sectionProbabilityIndex].ReadOnly);
                 Assert.IsTrue(dataGridView.Columns[sectionNIndex].ReadOnly);
                 Assert.IsTrue(dataGridView.Columns[assemblyGroupIndex].ReadOnly);
+
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[initialFailureMechanismResultProfileProbabilityIndex].Visible);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[probabilityRefinementTypeIndex].Visible);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[refinedProfileProbabilityIndex].Visible);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[profileProbabilityIndex].Visible);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[sectionNIndex].Visible);
             }
         }
 
@@ -322,6 +338,57 @@
             }
         }
 
+        [Test]
+        [TestCase(true)]
+        [TestCase(false)]
+        public void GivenGrassCoverErosionInwardsFailureMechanismResultView_WhenApplyLengthEffectChangedAndFailureMechanismObserversNotified_ThenDataGridViewUpdated(
+            bool useLengthEffect)
+        {
+            var failureMechanism = new GrassCoverErosionInwardsFailureMechanism
+            {
+                GeneralInput =
+                {
+                    ApplyLengthEffectInSection = !useLengthEffect
+                }
+            };
+            FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection("Section 1");
+            FailureMechanismTestHelper.SetSections(failureMechanism, new[]
+            {
+                section
+            });
+
+            GrassCoverErosionInwardsCalculationScenario calculationScenario = GrassCoverErosionInwardsCalculationScenarioTestFactory.CreateGrassCoverErosionInwardsCalculationScenario(section);
+            failureMechanism.CalculationsGroup.Children.Add(calculationScenario);
+
+            using (new AssemblyToolCalculatorFactoryConfig())
+            using (ShowFailureMechanismResultsView(failureMechanism))
+            {
+                var rowsChanged = false;
+                DataGridView dataGridView = GetDataGridView();
+                dataGridView.Rows.CollectionChanged += (sender, args) => rowsChanged = true;
+
+                // Precondition
+                Assert.IsFalse(rowsChanged);
+                Assert.AreEqual(!useLengthEffect, dataGridView.Columns[initialFailureMechanismResultProfileProbabilityIndex].Visible);
+                Assert.AreEqual(!useLengthEffect, dataGridView.Columns[probabilityRefinementTypeIndex].Visible);
+                Assert.AreEqual(!useLengthEffect, dataGridView.Columns[refinedProfileProbabilityIndex].Visible);
+                Assert.AreEqual(!useLengthEffect, dataGridView.Columns[profileProbabilityIndex].Visible);
+                Assert.AreEqual(!useLengthEffect, dataGridView.Columns[sectionNIndex].Visible);
+
+                // When
+                failureMechanism.GeneralInput.ApplyLengthEffectInSection = useLengthEffect;
+                failureMechanism.NotifyObservers();
+
+                // Then
+                Assert.IsTrue(rowsChanged);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[initialFailureMechanismResultProfileProbabilityIndex].Visible);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[probabilityRefinementTypeIndex].Visible);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[refinedProfileProbabilityIndex].Visible);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[profileProbabilityIndex].Visible);
+                Assert.AreEqual(useLengthEffect, dataGridView.Columns[sectionNIndex].Visible);
+            }
+        }
+
         private static DataGridView GetDataGridView()
         {
             return (DataGridView) new ControlTester("dataGridView").TheObject;