Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/PlLinesToWaternetConverter.cs
===================================================================
diff -u -r5252 -r5268
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/PlLinesToWaternetConverter.cs	(.../PlLinesToWaternetConverter.cs)	(revision 5252)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/PlLinesToWaternetConverter.cs	(.../PlLinesToWaternetConverter.cs)	(revision 5268)
@@ -61,21 +61,22 @@
     /// </summary>
     /// <param name="plLines">The pl lines.</param>
     /// <param name="soilProfile1D">The 1D soil profile.</param>
-    /// <param name="surfaceLine">The points of the surface line.</param>
+    /// <param name="surfaceLine">The surface line.</param>
     /// <param name="penetrationLength">Length of the penetration.</param>
-    /// <param name="xLeft">Left side of the 2D profile.</param>
-    /// <param name="xRight">Right side of the 2D profile.</param>
     /// <param name="pressureType">The type of distribution of the vertical water pressures.</param>
     /// <returns>A <see cref="Waternet"/>.</returns>
     /// <exception cref="NoNullAllowedException">Thrown when <paramref name="plLines"/>, <paramref name="soilProfile1D"/> or
     /// <paramref name="surfaceLine"/> is <c>null</c>.</exception>
-    public static Waternet CreateWaternetBasedOnPlLines(PlLines plLines, SoilProfile1D soilProfile1D, GeometryPointString surfaceLine,
-                                                        double penetrationLength, double xLeft, double xRight, IntrusionVerticalWaterPressureType? pressureType)
+    public static Waternet CreateWaternetBasedOnPlLines(PlLines plLines, SoilProfile1D soilProfile1D, SurfaceLine2 surfaceLine,
+                                                        double penetrationLength, IntrusionVerticalWaterPressureType? pressureType)
     {
         ThrowWhenPlLinesIsNull(plLines);
         ThrowWhenSoilProfileIsNull(soilProfile1D);
         ThrowWhenSurfaceLineIsNull(surfaceLine);
 
+        double xLeft = surfaceLine.CharacteristicPoints.GetGeometryPoint(CharacteristicPointType.SurfaceLevelOutside).X;
+        double xRight = surfaceLine.CharacteristicPoints.GetGeometryPoint(CharacteristicPointType.SurfaceLevelInside).X;
+
         if (soilProfile1D.BottomAquiferLayer == null)
         {
             throw new NoNullAllowedException(string.Format(Resources.NoBottomAquiferLayer, soilProfile1D.Name));
@@ -88,7 +89,7 @@
         if (plLine != null && !IsBelowSoilProfile(soilProfile1D, plLine))
         {
             waternet.PhreaticLine = CreateLine<PhreaticLine>(plLine, headLine1Name);
-            WaternetLine waternetLine = CreateWaternetLineForPhreaticLine(soilProfile1D, surfaceLine, headLine, xLeft, xRight, pressureType);
+            WaternetLine waternetLine = CreateWaternetLineForPhreaticLine(soilProfile1D, surfaceLine.Geometry, headLine, xLeft, xRight, pressureType);
             waternetLine.Name = waternetLine1Name;
             waternetLine.HeadLine = headLine;
             waternetLine.HeadLine.SyncCalcPoints();
@@ -693,7 +694,7 @@
     /// </summary>
     /// <param name="surfaceLine">The surface line.</param>
     /// <exception cref="NoNullAllowedException"></exception>
-    private static void ThrowWhenSurfaceLineIsNull(GeometryPointString surfaceLine)
+    private static void ThrowWhenSurfaceLineIsNull(SurfaceLine2 surfaceLine)
     {
         if (surfaceLine == null)
         {