Index: DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Geotechnics/SoilSurfaceProfileTests.cs
===================================================================
diff -u -r3255 -r3256
--- DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Geotechnics/SoilSurfaceProfileTests.cs	(.../SoilSurfaceProfileTests.cs)	(revision 3255)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data.Tests/Geotechnics/SoilSurfaceProfileTests.cs	(.../SoilSurfaceProfileTests.cs)	(revision 3256)
@@ -517,6 +517,102 @@
             }, bottomLayerSurface.GeometrySurface.OuterLoop.CurveList);
         }
 
+        [Test]
+        public void ConvertToSoilProfile2D_WithSurfaceLineIntersectingSoilLayerAndHorizontalLineAtBottomIntersection_ReturnsExpectedSoilProfile()
+        {
+            // Setup
+            const string bottomLayerName = "BottomLayer";
+            const string middleLayerName = "MiddleLayer";
+            const string topLayerName = "TopLayer";
+
+            SoilLayer1D bottomLayer = CreateSoilLayer(-2.5, bottomLayerName);
+            SoilLayer1D middleLayer = CreateSoilLayer(0, middleLayerName);
+
+            var profile = new SoilProfile1D();
+            profile.Layers.Add(bottomLayer);
+            profile.Layers.Add(middleLayer);
+            profile.BottomLevel = -10;
+
+            SurfaceLine2 surfaceLine = CreateSurfaceLine(new[]
+            {
+                new GeometryPoint(0, 2.5),
+                new GeometryPoint(5, -2.5),
+                new GeometryPoint(10, -2.5),
+                new GeometryPoint(15, 2.5)
+            });
+
+            var soilSurfaceProfile = new SoilSurfaceProfile
+            {
+                SoilProfile = profile,
+                SurfaceLine2 = surfaceLine,
+                DikeEmbankmentMaterial = new Soil
+                {
+                    Name = topLayerName
+                }
+            };
+
+            // Call
+            SoilProfile2D soilProfile2D = soilSurfaceProfile.ConvertToSoilProfile2D();
+
+            // Assert
+            var soilLayer2Ds = soilProfile2D.Surfaces;
+            Assert.That(soilLayer2Ds, Has.Count.EqualTo(5));
+
+            var topSoilLayerSurfaces = soilLayer2Ds.Where(l => string.Equals(l.Name, topLayerName)).ToArray();
+            Assert.That(topSoilLayerSurfaces.Length, Is.EqualTo(2));
+            Assert.That(topSoilLayerSurfaces.All(s => ReferenceEquals(s.Soil, soilSurfaceProfile.DikeEmbankmentMaterial)), Is.True);
+            AssertGeometry(new[]
+            {
+                new GeometryCurve(new Point2D(0, 2.5), new Point2D(2.5, 0)),
+                new GeometryCurve(new Point2D(2.5, 0), new Point2D(0, 0)),
+                new GeometryCurve(new Point2D(0, 0), new Point2D(0, 2.5))
+            }, topSoilLayerSurfaces[0].GeometrySurface.OuterLoop.CurveList);
+            AssertGeometry(new[]
+            {
+                new GeometryCurve(new Point2D(12.5, 0), new Point2D(15, 2.5)),
+                new GeometryCurve(new Point2D(15, 2.5), new Point2D(15, 0)),
+                new GeometryCurve(new Point2D(15, 0), new Point2D(12.5, 0))
+            }, topSoilLayerSurfaces[1].GeometrySurface.OuterLoop.CurveList);
+
+            var middleLayerSurfaces = soilLayer2Ds.Where(l => string.Equals(l.Name, middleLayerName)).ToArray();
+            Assert.That(middleLayerSurfaces.Length, Is.EqualTo(2));
+            Assert.That(middleLayerSurfaces.All(s => ReferenceEquals(s.Soil, middleLayer.Soil)), Is.True);
+            AssertGeometry(new[]
+            {
+                new GeometryCurve(new Point2D(0, 0), new Point2D(2.5, 0)),
+                new GeometryCurve(new Point2D(2.5, 0), new Point2D(5, -2.5)),
+                new GeometryCurve(new Point2D(5, -2.5), new Point2D(2.5, -2.5)),
+                new GeometryCurve(new Point2D(2.5, -2.5), new Point2D(0, -2.5)),
+                new GeometryCurve(new Point2D(0, -2.5), new Point2D(0, 0))
+            }, middleLayerSurfaces[0].GeometrySurface.OuterLoop.CurveList);
+            AssertGeometry(new[]
+            {
+                new GeometryCurve(new Point2D(12.5, 0), new Point2D(15, 0)),
+                new GeometryCurve(new Point2D(15, 0), new Point2D(15, -2.5)),
+                new GeometryCurve(new Point2D(15, -2.5), new Point2D(12.5, -2.5)),
+                new GeometryCurve(new Point2D(12.5, -2.5), new Point2D(10, -2.5)),
+                new GeometryCurve(new Point2D(10, -2.5), new Point2D(12.5, 0))
+            }, middleLayerSurfaces[1].GeometrySurface.OuterLoop.CurveList);
+
+            SoilLayer2D bottomLayerSurface = soilLayer2Ds.Single(l => string.Equals(l.Name, bottomLayerName));
+            Assert.That(bottomLayerSurface.Soil, Is.SameAs(bottomLayer.Soil));
+            AssertGeometry(new[]
+            {
+                new GeometryCurve(new Point2D(0, -2.5), new Point2D(2.5, -2.5)),
+                new GeometryCurve(new Point2D(2.5, -2.5), new Point2D(5, -2.5)),
+                new GeometryCurve(new Point2D(5, -2.5), new Point2D(10, -2.5)),
+                new GeometryCurve(new Point2D(10, -2.5), new Point2D(12.5, -2.5)),
+                new GeometryCurve(new Point2D(12.5, -2.5), new Point2D(15, -2.5)),
+                new GeometryCurve(new Point2D(15, -2.5), new Point2D(15, -10)),
+                new GeometryCurve(new Point2D(15, -10), new Point2D(12.5, -10)),
+                new GeometryCurve(new Point2D(12.5, -10), new Point2D(10, -10)),
+                new GeometryCurve(new Point2D(10, -10), new Point2D(5, -10)),
+                new GeometryCurve(new Point2D(5, -10), new Point2D(2.5, -10)),
+                new GeometryCurve(new Point2D(2.5, -10), new Point2D(0, -10)),
+                new GeometryCurve(new Point2D(0, -10), new Point2D(0, -2.5))
+            }, bottomLayerSurface.GeometrySurface.OuterLoop.CurveList);
+        }
+
         private static void AssertGeometry(IEnumerable<GeometryCurve> expectedCurves, IEnumerable<GeometryCurve> actualCurves)
         {
             int nrOfExpectedCurves = expectedCurves.Count();