Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/PhreaticLine.cs
===================================================================
diff -u
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/PhreaticLine.cs	(revision 0)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/PhreaticLine.cs	(revision 2022)
@@ -0,0 +1,44 @@
+// Copyright (C) Stichting Deltares 2019. All rights reserved.
+//
+// This file is part of the Dam Engine.
+//
+// The Dam Engine is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System.ComponentModel;
+using System.Xml.Serialization;
+
+namespace Deltares.DamEngine.Data.Geometry
+{
+    /// <summary>
+    /// Phreatic line object
+    /// As part of a waternet.
+    /// </summary>
+    [TypeConverter(typeof(ExpandableObjectConverter))]
+    public class PhreaticLine : GeometryPointString
+    {
+        /// <summary>
+        /// Gets or sets the waternet.
+        /// </summary>
+        /// <value>
+        /// The waternet.
+        /// </value>
+        [XmlIgnore]
+        public Waternet Waternet { get; set; }
+                        
+    }
+}
\ No newline at end of file
Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/KernelWrappers/MacroStabilityCommon/MacroStabilityIoTests.cs
===================================================================
diff -u -r2020 -r2022
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/KernelWrappers/MacroStabilityCommon/MacroStabilityIoTests.cs	(.../MacroStabilityIoTests.cs)	(revision 2020)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/KernelWrappers/MacroStabilityCommon/MacroStabilityIoTests.cs	(.../MacroStabilityIoTests.cs)	(revision 2022)
@@ -25,7 +25,6 @@
 using NUnit.Framework;
 using Deltares.MacroStability.Kernel;
 using Deltares.DamEngine.Data.General;
-using Deltares.DamEngine.TestHelpers;
 using Deltares.DamEngine.Calculators.KernelWrappers.MacroStabilityCommon.MacroStabilityIo;
 using Deltares.DamEngine.Data.Geotechnics;
 using Deltares.DamEngine.TestHelpers.Factories;
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/HeadLine.cs
===================================================================
diff -u
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/HeadLine.cs	(revision 0)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/HeadLine.cs	(revision 2022)
@@ -0,0 +1,32 @@
+// Copyright (C) Stichting Deltares 2019. All rights reserved.
+//
+// This file is part of the Dam Engine.
+//
+// The Dam Engine is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+
+namespace Deltares.DamEngine.Data.Geometry
+{
+    /// <summary>
+    /// Headline
+    /// </summary>
+    public class HeadLine : GeometryPointString
+    {
+        
+    }
+}
\ No newline at end of file
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/WaternetLine.cs
===================================================================
diff -u
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/WaternetLine.cs	(revision 0)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/WaternetLine.cs	(revision 2022)
@@ -0,0 +1,40 @@
+// Copyright (C) Stichting Deltares 2019. All rights reserved.
+//
+// This file is part of the Dam Engine.
+//
+// The Dam Engine is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System.Xml.Serialization;
+
+namespace Deltares.DamEngine.Data.Geometry
+{
+    /// <summary>
+    /// Waterline data class
+    /// </summary>
+    public class WaternetLine : GeometryPointString
+    {
+        /// <summary>
+        /// Gets or sets the head line.
+        /// </summary>
+        /// <value>
+        /// The head line.
+        /// </value>
+        [XmlElement("AssociatedHeadLine")]
+        public GeometryPointString HeadLine { get; set; }
+    }
+}
\ No newline at end of file
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Deltares.DamEngine.Data.csproj
===================================================================
diff -u -r1732 -r2022
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Deltares.DamEngine.Data.csproj	(.../Deltares.DamEngine.Data.csproj)	(revision 1732)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Deltares.DamEngine.Data.csproj	(.../Deltares.DamEngine.Data.csproj)	(revision 2022)
@@ -118,11 +118,15 @@
     <Compile Include="Geometry\GeometryPoint.cs" />
     <Compile Include="Geometry\GeometryPointString.cs" />
     <Compile Include="Geometry\GeometrySurface.cs" />
+    <Compile Include="Geometry\HeadLine.cs" />
     <Compile Include="Geometry\IGeometryObject.cs" />
     <Compile Include="Geometry\Line.cs" />
     <Compile Include="Geometry\LineHelper.cs" />
+    <Compile Include="Geometry\PhreaticLine.cs" />
     <Compile Include="Geometry\Point2D.cs" />
     <Compile Include="Geometry\Routines2D.cs" />
+    <Compile Include="Geometry\Waternet.cs" />
+    <Compile Include="Geometry\WaternetLine.cs" />
     <Compile Include="Geotechnics\CharacteristicPoint.cs" />
     <Compile Include="Geotechnics\CharacteristicPointSet.cs" />
     <Compile Include="Geotechnics\CharacteristicPointType.cs" />
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/Waternet.cs
===================================================================
diff -u
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/Waternet.cs	(revision 0)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geometry/Waternet.cs	(revision 2022)
@@ -0,0 +1,151 @@
+// Copyright (C) Stichting Deltares 2019. All rights reserved.
+//
+// This file is part of the Dam Engine.
+//
+// The Dam Engine is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System.Collections.Generic;
+using System.Xml.Serialization;
+
+namespace Deltares.DamEngine.Data.Geometry
+{
+    /// <summary>
+    /// Class holding the waternet.
+    /// </summary>
+    public class Waternet : GeometryObject
+    {
+        private readonly List<HeadLine> headLineList = new List<HeadLine>();
+        private PhreaticLine phreaticLine;
+        private double unitWeight = GeometryConstants.VolumicWeightOfWater;
+        private readonly List<WaternetLine> waternetLineList = new List<WaternetLine>();
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Waternet"/> class.
+        /// </summary>
+        public Waternet()
+        {
+            IsGenerated = false;
+        }
+
+        /// <summary>
+        /// Gets or sets the phreatic line.
+        /// </summary>
+        /// <value>
+        /// The phreatic line.
+        /// </value>
+        public PhreaticLine PhreaticLine
+        {
+            get
+            {
+                return phreaticLine;
+            }
+            set
+            {
+                phreaticLine = value;
+                if (phreaticLine != null)
+                {
+                    if (phreaticLine.Points.Count == 0 && phreaticLine.CalcPoints.Count > 0)
+                        phreaticLine.SyncPoints();
+                    phreaticLine.Waternet = this;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Gets the head line list.
+        /// </summary>
+        /// <value>
+        /// The head line list.
+        /// </value>
+        [XmlArray("HeadLines")]
+        public List<HeadLine> HeadLineList
+        {
+            get
+            {
+                return headLineList;
+            }
+        }
+
+        /// <summary>
+        /// Gets the waternet line list.
+        /// </summary>
+        /// <value>
+        /// The waternet line list.
+        /// </value>
+        [XmlArray("WaternetLines")]
+        public List<WaternetLine> WaternetLineList
+        {
+            get
+            {
+                return waternetLineList;
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets the unit weight.
+        /// </summary>
+        /// <value>
+        /// The unit weight.
+        /// </value>
+        public double UnitWeight
+        {
+            get
+            {
+                return unitWeight;
+            }
+            set
+            {
+                unitWeight = value;
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether this instance is generated.
+        /// </summary>
+        /// <value>
+        /// <c>true</c> if this instance is generated; otherwise, <c>false</c>.
+        /// </value>
+        public bool IsGenerated { get; set; }
+
+        /// <summary>
+        /// The water level of the phreatic line at the left side
+        /// </summary>
+        public double ExternalWaterLevel
+        {
+            get
+            {               
+                if (PhreaticLine != null)
+                    return PhreaticLine.CalcPoints[0].Z;
+                return 0.0;
+            }
+        }
+
+        /// <summary>
+        /// Adds the waternet line.
+        /// </summary>
+        /// <param name="aWaternetLine">A waternet line.</param>
+        public void AddWaternetLine(WaternetLine aWaternetLine)
+        {
+            if (!WaternetLineList.Contains(aWaternetLine))
+            {
+                aWaternetLine.SyncPoints();
+                WaternetLineList.Add(aWaternetLine);
+            }
+        }
+    }
+}
\ No newline at end of file