Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2Extensions.cs
===================================================================
diff -u -r2718 -r2794
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2Extensions.cs	(.../SurfaceLine2Extensions.cs)	(revision 2718)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2Extensions.cs	(.../SurfaceLine2Extensions.cs)	(revision 2794)
@@ -440,7 +440,7 @@
             if (riverLevel.HasValue)
             {
                 double z = line.CharacteristicPoints.GetGeometryPoint(CharacteristicPointType.DikeToeAtRiver).Z;
-                if (riverLevel <= z)
+                if (riverLevel < z)
                 {
                     ThrowWhenLevelBelowDikeToeDike(z, riverLevel.Value);
                 }