Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/WtiPipingSellmeijerRevised/WtiPipingSellmeijerRevisedKernelWrapper.cs
===================================================================
diff -u -r2193 -r2405
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/WtiPipingSellmeijerRevised/WtiPipingSellmeijerRevisedKernelWrapper.cs	(.../WtiPipingSellmeijerRevisedKernelWrapper.cs)	(revision 2193)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/WtiPipingSellmeijerRevised/WtiPipingSellmeijerRevisedKernelWrapper.cs	(.../WtiPipingSellmeijerRevisedKernelWrapper.cs)	(revision 2405)
@@ -431,7 +431,7 @@
                 permeabilityKx = aquiferLayer.PermeabilityKx;
                 upliftFactor = upliftLocationAndResult.UpliftFactor;
             }
-            var seepageLength = xExit - xEntry;
+            var seepageLength = (xExit - xEntry) + damKernelInput.Location.DistanceToEntryPoint;
 
             // Reference level is highest value of surfaceLevel or PolderLevel
             // Uit TR Zandmeevoerende wellen (1999): "Het verval dH is gelijk aan het verschil tussen buitenwaterstand (het ontwerppeil(OP)) 
Index: DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/Factories/FactoryForDamProjectData.cs
===================================================================
diff -u -r2211 -r2405
--- DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/Factories/FactoryForDamProjectData.cs	(.../FactoryForDamProjectData.cs)	(revision 2211)
+++ DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/Factories/FactoryForDamProjectData.cs	(.../FactoryForDamProjectData.cs)	(revision 2405)
@@ -348,6 +348,7 @@
                 location.XSoilGeometry2DOrigin = 1.23;
                 location.ModelParametersForPlLines.PlLineCreationMethod = (PlLineCreationMethod)i;
                 location.IntrusionVerticalWaterPressure = (IntrusionVerticalWaterPressureType)i;
+                location.DistanceToEntryPoint = 1.2 * i + 0.56; 
                 location.PolderLevel = 1.0 * i + 0.11;
                 location.ModelParametersForPlLines.DampingFactorPl4 = 1.0 * i + 0.12;
                 location.ModelParametersForPlLines.DampingFactorPl3 = 1.0 * i + 0.13;
Index: DamEngine/trunk/src/Deltares.DamEngine.Interface/FillDamFromXmlInput.cs
===================================================================
diff -u -r2211 -r2405
--- DamEngine/trunk/src/Deltares.DamEngine.Interface/FillDamFromXmlInput.cs	(.../FillDamFromXmlInput.cs)	(revision 2211)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface/FillDamFromXmlInput.cs	(.../FillDamFromXmlInput.cs)	(revision 2405)
@@ -492,6 +492,10 @@
                 var location = new Location();
                 var inputLocation = inputLocations[i];
                 location.Name = inputLocation.Name;
+                if (inputLocation.DistanceToEntryPointSpecified)
+                {
+                    location.DistanceToEntryPoint = inputLocation.DistanceToEntryPoint;
+                }
                 if (inputLocation.XSoilGeometry2DOriginSpecified) location.XSoilGeometry2DOrigin = inputLocation.XSoilGeometry2DOrigin;
                 // Waternet options
                 var waternetOptions = inputLocation.WaternetOptions;
Index: DamEngine/trunk/xsd/DamLocation.xsd
===================================================================
diff -u -r2211 -r2405
--- DamEngine/trunk/xsd/DamLocation.xsd	(.../DamLocation.xsd)	(revision 2211)
+++ DamEngine/trunk/xsd/DamLocation.xsd	(.../DamLocation.xsd)	(revision 2405)
@@ -157,5 +157,6 @@
     <xs:attribute name="Name" type="xs:string" use="required" />
     <xs:attribute name="DikeEmbankmentMaterial" type="xs:string" use="required" />
     <xs:attribute name="XSoilGeometry2DOrigin" type="xs:double" use="optional" />
+    <xs:attribute name="DistanceToEntryPoint" type="xs:double" use="optional" />
   </xs:complexType>
 </xs:schema>
\ No newline at end of file
Index: DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlInputFromDam.cs
===================================================================
diff -u -r2211 -r2405
--- DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlInputFromDam.cs	(.../FillXmlInputFromDam.cs)	(revision 2211)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlInputFromDam.cs	(.../FillXmlInputFromDam.cs)	(revision 2405)
@@ -489,6 +489,8 @@
 
                 var inputLocation = new Io.XmlInput.Location();
                 inputLocation.Name = location.Name;
+                inputLocation.DistanceToEntryPoint = location.DistanceToEntryPoint;
+                inputLocation.DistanceToEntryPointSpecified = true;
                 inputLocation.XSoilGeometry2DOrigin = location.XSoilGeometry2DOrigin;
                 inputLocation.XSoilGeometry2DOriginSpecified = true;
                 inputLocation.SurfaceLineName = location.SurfaceLine.Name;
Index: DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/FillXmlOutputFromDamTests.cs
===================================================================
diff -u -r2111 -r2405
--- DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/FillXmlOutputFromDamTests.cs	(.../FillXmlOutputFromDamTests.cs)	(revision 2111)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/FillXmlOutputFromDamTests.cs	(.../FillXmlOutputFromDamTests.cs)	(revision 2405)
@@ -193,6 +193,7 @@
             {
                 var location = new Location();
                 location.Name = "A" + (i + 1);
+                location.DistanceToEntryPoint = 0.2 * i + 0.56;
                 location.Segment = new Segment();
                 var soilGeometryProbability = new SoilGeometryProbability();
                 soilGeometryProbability.SoilProfile1D = new SoilProfile1D();
Index: DamEngine/trunk/src/Deltares.DamEngine.Io/DamInput.cs
===================================================================
diff -u -r2211 -r2405
--- DamEngine/trunk/src/Deltares.DamEngine.Io/DamInput.cs	(.../DamInput.cs)	(revision 2211)
+++ DamEngine/trunk/src/Deltares.DamEngine.Io/DamInput.cs	(.../DamInput.cs)	(revision 2405)
@@ -344,6 +344,10 @@
         
         private bool xSoilGeometry2DOriginFieldSpecified;
         
+        private double distanceToEntryPointField;
+        
+        private bool distanceToEntryPointFieldSpecified;
+        
         /// <remarks/>
         public object OperationalOptions {
             get {
@@ -480,6 +484,28 @@
                 this.xSoilGeometry2DOriginFieldSpecified = value;
             }
         }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlAttributeAttribute()]
+        public double DistanceToEntryPoint {
+            get {
+                return this.distanceToEntryPointField;
+            }
+            set {
+                this.distanceToEntryPointField = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlIgnoreAttribute()]
+        public bool DistanceToEntryPointSpecified {
+            get {
+                return this.distanceToEntryPointFieldSpecified;
+            }
+            set {
+                this.distanceToEntryPointFieldSpecified = value;
+            }
+        }
     }
     
     /// <remarks/>
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/General/Location.cs
===================================================================
diff -u -r2227 -r2405
--- DamEngine/trunk/src/Deltares.DamEngine.Data/General/Location.cs	(.../Location.cs)	(revision 2227)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/General/Location.cs	(.../Location.cs)	(revision 2405)
@@ -21,6 +21,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Dynamic;
 using System.Linq;
 using Deltares.DamEngine.Data.Design;
 using Deltares.DamEngine.Data.General.Gauges;
@@ -42,7 +43,8 @@
         private ModelParametersForPlLines modelParametersForPlLines = new ModelParametersForPlLines();
         private string dikeEmbankmentMaterial = "";
         private double dikeTableHeight;
-        
+        private double distanceToEntryPoint;
+
         private IList<GaugePlLine> gaugePlLines = new List<GaugePlLine>();
         private IList<Gauge> gauges = new List<Gauge>();
         private double? headPl2;
@@ -134,6 +136,18 @@
         }
 
         /// <summary>
+        /// Gets or sets the distance to entry point (can be used for Piping Sellmeijer).
+        /// </summary>
+        /// <value>
+        /// The distance to entry point.
+        /// </value>
+        public double DistanceToEntryPoint
+        {
+            get { return distanceToEntryPoint;}
+            set { distanceToEntryPoint = value; }
+        }
+
+        /// <summary>
         /// Gets or sets the sensor location.
         /// </summary>
         /// <value>
@@ -171,7 +185,7 @@
         }
 
         /// <summary>
-        /// Gets or sets the x rd dike line (for senesors).
+        /// Gets or sets the x rd dike line (for sensors).
         /// </summary>
         /// <value>
         /// The x rd dike line.