Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryDatabase.cs
===================================================================
diff -u -rb616b18965853b4dee437f1fc5bf341be72a6057 -r2dcffedf1540df6d33d778b9265b55b5dea2d2a9
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryDatabase.cs	(.../HydraulicBoundaryDatabase.cs)	(revision b616b18965853b4dee437f1fc5bf341be72a6057)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryDatabase.cs	(.../HydraulicBoundaryDatabase.cs)	(revision 2dcffedf1540df6d33d778b9265b55b5dea2d2a9)
@@ -52,13 +52,5 @@
         /// Gets the hydraulic boundary locations.
         /// </summary>
         public List<HydraulicBoundaryLocation> Locations { get; private set; }
-
-        /// <summary>
-        /// Clears all the locations from the <see cref="HydraulicBoundaryDatabase"/>.
-        /// </summary>
-        public void ClearLocations()
-        {
-            Locations.Clear();
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryDatabaseTest.cs
===================================================================
diff -u -r8293556a04e3650c9978df7a50f8f8ad0d792ed8 -r2dcffedf1540df6d33d778b9265b55b5dea2d2a9
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryDatabaseTest.cs	(.../HydraulicBoundaryDatabaseTest.cs)	(revision 8293556a04e3650c9978df7a50f8f8ad0d792ed8)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryDatabaseTest.cs	(.../HydraulicBoundaryDatabaseTest.cs)	(revision 2dcffedf1540df6d33d778b9265b55b5dea2d2a9)
@@ -41,23 +41,5 @@
             Assert.IsInstanceOf<Observable>(hydraulicBoundaryDatabase);
             CollectionAssert.IsEmpty(hydraulicBoundaryDatabase.Locations);
         }
-
-        [Test]
-        public void ClearLocations_Always_EmtpyLocationCollection()
-        {
-            // Setup
-            HydraulicBoundaryDatabase hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase();
-            var location = hydraulicBoundaryDatabase.Locations;
-            location.Add(new HydraulicBoundaryLocation(1, "test", 1.0, 2.0));
-
-            // Precondition
-            CollectionAssert.IsNotEmpty(location);
-
-            // Call
-            hydraulicBoundaryDatabase.ClearLocations();
-
-            // Assert
-            CollectionAssert.IsEmpty(location);
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/AssessmentSection.cs
===================================================================
diff -u -re05b8947a4f5a41c2cb8b3f5460daf20ab77b2c8 -r2dcffedf1540df6d33d778b9265b55b5dea2d2a9
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/AssessmentSection.cs	(.../AssessmentSection.cs)	(revision e05b8947a4f5a41c2cb8b3f5460daf20ab77b2c8)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/AssessmentSection.cs	(.../AssessmentSection.cs)	(revision 2dcffedf1540df6d33d778b9265b55b5dea2d2a9)
@@ -44,6 +44,7 @@
     public sealed class AssessmentSection : Observable, IAssessmentSection
     {
         private ReferenceLine referenceLine;
+        private HydraulicBoundaryDatabase hydraulicBoundaryDatabase;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="AssessmentSection"/> class.
@@ -191,7 +192,21 @@
 
         public FailureMechanismContribution FailureMechanismContribution { get; private set; }
 
-        public HydraulicBoundaryDatabase HydraulicBoundaryDatabase { get; set; }
+        public HydraulicBoundaryDatabase HydraulicBoundaryDatabase
+        {
+            get
+            {
+                return hydraulicBoundaryDatabase;
+            }
+            set
+            {
+                hydraulicBoundaryDatabase = value;
+                GrassCoverErosionOutwards.SetGrassCoverErosionOutwardsHydraulicBoundaryLocations(
+                    hydraulicBoundaryDatabase != null ?
+                        hydraulicBoundaryDatabase.Locations :
+                        null);
+            }
+        }
 
         public long StorageId { get; set; }
 
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/AssessmentSectionTest.cs
===================================================================
diff -u -rfcc734ebbc1e5c6c02ae2dae2a184fdcb9aa4d1b -r2dcffedf1540df6d33d778b9265b55b5dea2d2a9
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/AssessmentSectionTest.cs	(.../AssessmentSectionTest.cs)	(revision fcc734ebbc1e5c6c02ae2dae2a184fdcb9aa4d1b)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/AssessmentSectionTest.cs	(.../AssessmentSectionTest.cs)	(revision 2dcffedf1540df6d33d778b9265b55b5dea2d2a9)
@@ -28,6 +28,7 @@
 using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.Contribution;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.HydraRing.Data;
 using RingtoetsIntegrationResources = Ringtoets.Integration.Data.Properties.Resources;
 
 namespace Ringtoets.Integration.Data.Test
@@ -324,6 +325,96 @@
             Assert.AreEqual(double.NaN, assessmentSection.PipingFailureMechanism.PipingProbabilityAssessmentInput.SectionLength);
         }
 
+        [Test]
+        public void HydraulicBoundaryDatabase_SetNewValue_GetNewValue()
+        {
+            // Setup
+            var assessmentSection = new AssessmentSection(AssessmentSectionComposition.Dike);
+
+            var hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase();
+
+            // Call
+            assessmentSection.HydraulicBoundaryDatabase = hydraulicBoundaryDatabase;
+
+            // Assert
+            Assert.AreSame(hydraulicBoundaryDatabase, assessmentSection.HydraulicBoundaryDatabase);
+        }
+
+        [Test]
+        public void HydraulicBoundaryDatabase_HydraulicBoundaryDatabaseWithLocations_GrassCoverErosionOutwardsHydraulicBoundaryLocationsSet()
+        {
+            // Setup
+            var assessmentSection = new AssessmentSection(AssessmentSectionComposition.Dike);
+            var hydraulicBoundaryLocation = new HydraulicBoundaryLocation(1, "", 0, 0);
+            var hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase
+            {
+                Locations =
+                {
+                    hydraulicBoundaryLocation
+                }
+            };
+
+            // Call
+            assessmentSection.HydraulicBoundaryDatabase = hydraulicBoundaryDatabase;
+
+            // Assert
+            Assert.AreEqual(1, assessmentSection.GrassCoverErosionOutwards.GrassCoverErosionOutwardsHydraulicBoundaryLocations.Count);
+
+            var grassCoverErosionOutwardsLocation = assessmentSection.GrassCoverErosionOutwards.GrassCoverErosionOutwardsHydraulicBoundaryLocations.First();
+            Assert.AreSame(hydraulicBoundaryLocation, grassCoverErosionOutwardsLocation.HydraulicBoundaryLocation);
+        }
+
+        [Test]
+        public void HydraulicBoundaryDatabase_HydraulicBoundaryDatabaseWithoutLocations_GrassCoverErosionOutwardsHydraulicBoundaryLocationsEmpty()
+        {
+            // Setup
+            var assessmentSection = new AssessmentSection(AssessmentSectionComposition.Dike);
+            var hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase
+            {
+                Locations =
+                {
+                    new HydraulicBoundaryLocation(1, "", 0, 0)
+                }
+            };
+            assessmentSection.HydraulicBoundaryDatabase = hydraulicBoundaryDatabase;
+
+            // Precondition
+            Assert.AreEqual(1, assessmentSection.GrassCoverErosionOutwards.GrassCoverErosionOutwardsHydraulicBoundaryLocations.Count);
+
+            var emptyHydraulicBoundaryDatabase = new HydraulicBoundaryDatabase();
+
+            // Call
+            assessmentSection.HydraulicBoundaryDatabase = emptyHydraulicBoundaryDatabase;
+
+            // Assert
+            Assert.AreSame(emptyHydraulicBoundaryDatabase, assessmentSection.HydraulicBoundaryDatabase);
+            CollectionAssert.IsEmpty(assessmentSection.GrassCoverErosionOutwards.GrassCoverErosionOutwardsHydraulicBoundaryLocations);
+        }
+
+        [Test]
+        public void HydraulicBoundaryDatabase_HydraulicBoundaryDatabaseNull_GrassCoverErosionOutwardsHydraulicBoundaryLocationsEmpty()
+        {
+            // Setup
+            var assessmentSection = new AssessmentSection(AssessmentSectionComposition.Dike);
+            var hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase
+            {
+                Locations =
+                {
+                    new HydraulicBoundaryLocation(1, "", 0, 0)
+                }
+            };
+            assessmentSection.HydraulicBoundaryDatabase = hydraulicBoundaryDatabase;
+
+            // Precondition
+            Assert.AreEqual(1, assessmentSection.GrassCoverErosionOutwards.GrassCoverErosionOutwardsHydraulicBoundaryLocations.Count);
+
+            // Call
+            assessmentSection.HydraulicBoundaryDatabase = null;
+
+            // Assert
+            CollectionAssert.IsEmpty(assessmentSection.GrassCoverErosionOutwards.GrassCoverErosionOutwardsHydraulicBoundaryLocations);
+        }
+
         private IFailureMechanism[] GetExpectedContributingFailureMechanisms(AssessmentSection section)
         {
             return new IFailureMechanism[]
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Ringtoets.Integration.Data.Test.csproj
===================================================================
diff -u -re05b8947a4f5a41c2cb8b3f5460daf20ab77b2c8 -r2dcffedf1540df6d33d778b9265b55b5dea2d2a9
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Ringtoets.Integration.Data.Test.csproj	(.../Ringtoets.Integration.Data.Test.csproj)	(revision e05b8947a4f5a41c2cb8b3f5460daf20ab77b2c8)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Ringtoets.Integration.Data.Test.csproj	(.../Ringtoets.Integration.Data.Test.csproj)	(revision 2dcffedf1540df6d33d778b9265b55b5dea2d2a9)
@@ -107,6 +107,10 @@
       <Project>{90de728e-48ef-4665-ab38-3d88e41d9f4d}</Project>
       <Name>Ringtoets.GrassCoverErosionInwards.Data</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\HydraRing\src\Ringtoets.HydraRing.Data\Ringtoets.HydraRing.Data.csproj">
+      <Project>{70F8CC9C-5BC8-4FB2-B201-EAE7FA8088C2}</Project>
+      <Name>Ringtoets.HydraRing.Data</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\Piping\src\Ringtoets.Piping.Data\Ringtoets.Piping.Data.csproj">
       <Project>{ce994cc9-6f6a-48ac-b4be-02c30a21f4db}</Project>
       <Name>Ringtoets.Piping.Data</Name>