Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryLocation.cs
===================================================================
diff -u -rde09e649989e2c4f858632345841f7b9971debe3 -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryLocation.cs	(.../HydraulicBoundaryLocation.cs)	(revision de09e649989e2c4f858632345841f7b9971debe3)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Data/HydraulicBoundaryLocation.cs	(.../HydraulicBoundaryLocation.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -35,13 +35,11 @@
         /// <param name="name">Name of the <see cref="HydraulicBoundaryLocation"/>.</param>
         /// <param name="x">X-coordinate of the <see cref="HydraulicBoundaryLocation"/>.</param>
         /// <param name="y">Y-coordinate of the <see cref="HydraulicBoundaryLocation"/>.</param>
-        /// <param name="designWaterLevel">Design water level of the <see cref="HydraulicBoundaryLocation"/>.</param>
-        public HydraulicBoundaryLocation(long id, string name, double x, double y, string designWaterLevel)
+        public HydraulicBoundaryLocation(long id, string name, double x, double y)
         {
             Id = id;
             Name = name;
             Location = new Point2D(x, y);
-            DesignWaterLevel = designWaterLevel;
         }
 
         /// <summary>
@@ -62,6 +60,6 @@
         /// <summary>
         /// Gets the design water level of <see cref="HydraulicBoundaryLocation"/>.
         /// </summary>
-        public string DesignWaterLevel { get; private set; }
+        public double DesignWaterLevel { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Forms/PresentationObjects/HydraulicBoundaryLocationProperties.cs
===================================================================
diff -u -rde09e649989e2c4f858632345841f7b9971debe3 -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Forms/PresentationObjects/HydraulicBoundaryLocationProperties.cs	(.../HydraulicBoundaryLocationProperties.cs)	(revision de09e649989e2c4f858632345841f7b9971debe3)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Forms/PresentationObjects/HydraulicBoundaryLocationProperties.cs	(.../HydraulicBoundaryLocationProperties.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -89,7 +89,7 @@
         /// </summary>
         [PropertyOrder(4)]
         [ResourcesDisplayName(typeof(HydraRingResources), "HydraulicBoundaryDatabase_Locations_DesignWaterLevel")]
-        public string DesignWaterLevel
+        public double DesignWaterLevel
         {
             get
             {
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.IO/HydraulicBoundarySqLiteDatabaseReader.cs
===================================================================
diff -u -rb743d495d10779d51c8f75b7cb04b5babb4b226f -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.IO/HydraulicBoundarySqLiteDatabaseReader.cs	(.../HydraulicBoundarySqLiteDatabaseReader.cs)	(revision b743d495d10779d51c8f75b7cb04b5babb4b226f)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.IO/HydraulicBoundarySqLiteDatabaseReader.cs	(.../HydraulicBoundarySqLiteDatabaseReader.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -156,9 +156,8 @@
                 var name = Read<string>(HydraulicBoundaryDatabaseColumns.LocationName);
                 var x = Read<double>(HydraulicBoundaryDatabaseColumns.LocationX);
                 var y = Read<double>(HydraulicBoundaryDatabaseColumns.LocationY);
-                var designWaterLevel = "";
                 MoveNext();
-                return new HydraulicBoundaryLocation(id, name, x, y, designWaterLevel);
+                return new HydraulicBoundaryLocation(id, name, x, y);
             }
             catch (InvalidCastException exception)
             {
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/HydraRingConfigurationTest.cs
===================================================================
diff -u -r91f31671598442c0ea6141f14630a672aa652dac -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/HydraRingConfigurationTest.cs	(.../HydraRingConfigurationTest.cs)	(revision 91f31671598442c0ea6141f14630a672aa652dac)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/HydraRingConfigurationTest.cs	(.../HydraRingConfigurationTest.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -40,13 +40,13 @@
             hydraRingConfiguration.AddHydraRingCalculation(new HydraRingCalculationData
             {
                 FailureMechanismType = HydraRingFailureMechanismType.QVariant,
-                HydraulicBoundaryLocation = new HydraulicBoundaryLocation(700003, "Location 1", 0, 0, "10.0")
+                HydraulicBoundaryLocation = new HydraulicBoundaryLocation(700003, "Location 1", 0, 0)
             });
 
             hydraRingConfiguration.AddHydraRingCalculation(new HydraRingCalculationData
             {
                 FailureMechanismType = HydraRingFailureMechanismType.DikesOvertopping,
-                HydraulicBoundaryLocation = new HydraulicBoundaryLocation(700004, "Location 2", 1, 1, "12.0")
+                HydraulicBoundaryLocation = new HydraulicBoundaryLocation(700004, "Location 2", 1, 1)
             });
 
             var expectedCreationScript = "DELETE FROM [HydraulicModels];" + Environment.NewLine +
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryDatabaseTest.cs
===================================================================
diff -u -r97357b3b1d601d942410b4ebeff0d2647f753774 -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryDatabaseTest.cs	(.../HydraulicBoundaryDatabaseTest.cs)	(revision 97357b3b1d601d942410b4ebeff0d2647f753774)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryDatabaseTest.cs	(.../HydraulicBoundaryDatabaseTest.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -45,7 +45,7 @@
             // Setup
             HydraulicBoundaryDatabase hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase();
             var location = hydraulicBoundaryDatabase.Locations;
-            location.Add(new HydraulicBoundaryLocation(1, "test", 1.0, 2.0, "toetspeil"));
+            location.Add(new HydraulicBoundaryLocation(1, "test", 1.0, 2.0));
 
             // Precondition
             CollectionAssert.IsNotEmpty(location);
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryLocationTest.cs
===================================================================
diff -u -rde09e649989e2c4f858632345841f7b9971debe3 -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryLocationTest.cs	(.../HydraulicBoundaryLocationTest.cs)	(revision de09e649989e2c4f858632345841f7b9971debe3)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Data.Test/HydraulicBoundaryLocationTest.cs	(.../HydraulicBoundaryLocationTest.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -38,10 +38,9 @@
             long id = 0L;
             double x = 1.0;
             double y = 1.0;
-            string designWaterLevel = "<some value>";
 
             // Call
-            TestDelegate test = () => new HydraulicBoundaryLocation(id, null, x, y, designWaterLevel);
+            TestDelegate test = () => new HydraulicBoundaryLocation(id, null, x, y);
 
             // Assert
             Assert.DoesNotThrow(test);
@@ -55,23 +54,35 @@
             string name = "<some name>";
             double x = 567.0;
             double y = 890.0;
-            string designWaterLevel = "<some value>";
 
             // Call
-            HydraulicBoundaryLocation hydraulicBoundaryLocation = new HydraulicBoundaryLocation(id, name, x, y, designWaterLevel);
+            HydraulicBoundaryLocation hydraulicBoundaryLocation = new HydraulicBoundaryLocation(id, name, x, y);
 
             // Assert
             Assert.IsInstanceOf<HydraulicBoundaryLocation>(hydraulicBoundaryLocation);
             Assert.AreEqual(id, hydraulicBoundaryLocation.Id);
             Assert.AreEqual(name, hydraulicBoundaryLocation.Name);
-            Assert.AreEqual(designWaterLevel, hydraulicBoundaryLocation.DesignWaterLevel);
             Point2D location = hydraulicBoundaryLocation.Location;
             Assert.IsInstanceOf<Point2D>(location);
             Assert.AreEqual(x, location.X);
             Assert.AreEqual(y, location.Y);
         }
 
         [Test]
+        public void Properties_ValidParameters_PropertiesAsExpected()
+        {
+            // Setup
+            double designWaterLevel = 741.0;
+            HydraulicBoundaryLocation hydraulicBoundaryLocation = new HydraulicBoundaryLocation(0, "", 0, 0);
+
+            // Call
+            hydraulicBoundaryLocation.DesignWaterLevel = designWaterLevel;
+
+            // Assert
+            Assert.AreEqual(designWaterLevel, hydraulicBoundaryLocation.DesignWaterLevel);
+        }
+
+        [Test]
         public void PropertyAttributes_ReturnExpectedValues()
         {
             // Setup
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Forms.Test/PresentationObjects/HydraulicBoundaryLocationPropertiesTest.cs
===================================================================
diff -u -rde09e649989e2c4f858632345841f7b9971debe3 -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Forms.Test/PresentationObjects/HydraulicBoundaryLocationPropertiesTest.cs	(.../HydraulicBoundaryLocationPropertiesTest.cs)	(revision de09e649989e2c4f858632345841f7b9971debe3)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Forms.Test/PresentationObjects/HydraulicBoundaryLocationPropertiesTest.cs	(.../HydraulicBoundaryLocationPropertiesTest.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -42,8 +42,7 @@
                 0,
                 "",
                 0.0,
-                0.0,
-                ""
+                0.0
             };
             var hydraulicBoundaryLocationMock = mockRepository.StrictMock<HydraulicBoundaryLocation>(hydraulicBoundaryLocationArguments);
             mockRepository.ReplayAll();
@@ -65,18 +64,18 @@
             double y = 890.0;
             Point2D coordinates = new Point2D(x, y);
             string name = "<some name>";
-            string designWaterLevel = "<some level>";
+            double designWaterLevel = 741.0;
 
             var mockRepository = new MockRepository();
             object[] hydraulicBoundaryLocationArguments =
             {
                 id,
                 name,
                 x,
-                y,
-                designWaterLevel
+                y
             };
             var hydraulicBoundaryLocationMock = mockRepository.StrictMock<HydraulicBoundaryLocation>(hydraulicBoundaryLocationArguments);
+            hydraulicBoundaryLocationMock.DesignWaterLevel = designWaterLevel;
             mockRepository.ReplayAll();
 
             // Call
@@ -106,8 +105,7 @@
                 id,
                 name,
                 x,
-                y,
-                ""
+                y
             };
             var hydraulicBoundaryLocationMock = mockRepository.StrictMock<HydraulicBoundaryLocation>(hydraulicBoundaryLocationArguments);
             mockRepository.ReplayAll();
@@ -126,7 +124,7 @@
         {
             // Setup
             var mockRepository = new MockRepository();
-            var hydraulicBoundaryLocationMock = mockRepository.StrictMock<HydraulicBoundaryLocation>(0, "", 0.0, 0.0, "");
+            var hydraulicBoundaryLocationMock = mockRepository.StrictMock<HydraulicBoundaryLocation>(0, "", 0.0, 0.0);
             mockRepository.ReplayAll();
 
             var hydraulicBoundaryLocationProperties = new HydraulicBoundaryLocationProperties(hydraulicBoundaryLocationMock);
Index: Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/HydraulicBoundaryDatabasePropertiesTest.cs
===================================================================
diff -u -rde09e649989e2c4f858632345841f7b9971debe3 -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/HydraulicBoundaryDatabasePropertiesTest.cs	(.../HydraulicBoundaryDatabasePropertiesTest.cs)	(revision de09e649989e2c4f858632345841f7b9971debe3)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/PropertyClasses/HydraulicBoundaryDatabasePropertiesTest.cs	(.../HydraulicBoundaryDatabasePropertiesTest.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -52,7 +52,7 @@
             var assessmentSectionBaseMock = mocks.StrictMock<AssessmentSectionBase>();
             mocks.ReplayAll();
 
-            HydraulicBoundaryLocation hydraulicBoundaryLocation = new HydraulicBoundaryLocation(1, "name", 1.0, 2.0, "water");
+            HydraulicBoundaryLocation hydraulicBoundaryLocation = new HydraulicBoundaryLocation(1, "name", 1.0, 2.0);
             HydraulicBoundaryLocationProperties expectedLocationProperties = new HydraulicBoundaryLocationProperties(hydraulicBoundaryLocation);
 
             HydraulicBoundaryDatabaseContext hydraulicBoundaryDatabaseContext = new HydraulicBoundaryDatabaseContext(new HydraulicBoundaryDatabase(), assessmentSectionBaseMock);
Index: Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/Views/AssessmentSectionViewTest.cs
===================================================================
diff -u -rac4b9f3c4545c1bcb9a688d4613e61635e9ad2a8 -r7235aeaea6e256141b54459aa33da203e84f280b
--- Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/Views/AssessmentSectionViewTest.cs	(.../AssessmentSectionViewTest.cs)	(revision ac4b9f3c4545c1bcb9a688d4613e61635e9ad2a8)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/Views/AssessmentSectionViewTest.cs	(.../AssessmentSectionViewTest.cs)	(revision 7235aeaea6e256141b54459aa33da203e84f280b)
@@ -57,7 +57,7 @@
             object mapObject = view.Controls[0];
             Assert.IsInstanceOf<BaseMap>(mapObject);
 
-            var map = (BaseMap)mapObject;
+            var map = (BaseMap) mapObject;
             Assert.AreEqual(DockStyle.Fill, map.Dock);
             Assert.NotNull(view.Map);
         }
@@ -67,7 +67,7 @@
         {
             // Setup
             var view = new AssessmentSectionView();
-            var map = (BaseMap)view.Controls[0];
+            var map = (BaseMap) view.Controls[0];
 
             // Call
             TestDelegate testDelegate = () => view.Data = null;
@@ -82,9 +82,9 @@
         {
             // Setup
             var view = new AssessmentSectionView();
-            var map = (BaseMap)view.Controls[0];
+            var map = (BaseMap) view.Controls[0];
             var assessmentSectionBase = new AssessmentSectionBaseTestClass();
-            assessmentSectionBase.HydraulicBoundaryDatabase.Locations.Add(new HydraulicBoundaryLocation(1, "test", 1.0, 2.0, "level"));
+            assessmentSectionBase.HydraulicBoundaryDatabase.Locations.Add(new HydraulicBoundaryLocation(1, "test", 1.0, 2.0));
 
             // Call
             view.Data = assessmentSectionBase;
@@ -102,4 +102,4 @@
             }
         }
     }
-}
+}
\ No newline at end of file