--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flowdepth/FlowDepthCalculationResults.java	Fri Feb 09 18:07:22 2018 +0100
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flowdepth/FlowDepthCalculationResults.java	Tue Feb 13 14:53:23 2018 +0100
@@ -9,6 +9,7 @@
  */
 package org.dive4elements.river.artifacts.sinfo.flowdepth;
 
+import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -18,7 +19,9 @@
 /**
  * @author Gernot Belger
  */
-public final class FlowDepthCalculationResults {
+public final class FlowDepthCalculationResults implements Serializable {
+    private static final long serialVersionUID = 1L;
+
     private final List<FlowDepthCalculationResult> results = new ArrayList<>();
 
     private final River river;