Index: dam engine/branches/Initial Source/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2Extensions.cs
===================================================================
diff -u -r303 -r316
--- dam engine/branches/Initial Source/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2Extensions.cs	(.../SurfaceLine2Extensions.cs)	(revision 303)
+++ dam engine/branches/Initial Source/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2Extensions.cs	(.../SurfaceLine2Extensions.cs)	(revision 316)
@@ -119,5 +119,20 @@
             }
             return null;
         }
+
+        /// <summary>
+        /// Checks if a surfaceline has all characteristic point types required to describe
+        /// a dike.
+        /// </summary>
+        /// <param name="line">Surfaceline to be checked.</param>
+        /// <returns>True if there are characteristic points defined that describe a dike;
+        /// False otherwise.</returns>
+        public static bool HasDike(this SurfaceLine2 line)
+        {
+            return IsDefined(line, CharacteristicPointType.DikeToeAtRiver) &&
+                   IsDefined(line, CharacteristicPointType.DikeTopAtRiver) &&
+                   IsDefined(line, CharacteristicPointType.DikeTopAtPolder) &&
+                   IsDefined(line, CharacteristicPointType.DikeToeAtPolder);
+        }
     }
 }
\ No newline at end of file