diff --git a/src/Solver/RubarBE.py b/src/Solver/RubarBE.py
index 6b3810ba..2b1afc51 100644
--- a/src/Solver/RubarBE.py
+++ b/src/Solver/RubarBE.py
@@ -147,6 +147,7 @@ class Rubar3(CommandLineSolver):
         self._export_stricklers(study, repertory, qlog, name=name)
         self._export_hydro(study, repertory, qlog, name=name)
         self._export_condav(study, repertory, qlog, name=name)
+        self._export_abshyd(study, repertory, qlog, name=name)
 
         return True
 
@@ -330,6 +331,29 @@ class Rubar3(CommandLineSolver):
                     if ind % 3 != 0:
                         f.write("\n")
 
+    def _export_abshyd(self, study, repertory, qlog, name="0"):
+        if qlog is not None:
+            qlog.put("Export ABSHYD file")
+
+        with open(
+                os.path.join(
+                    repertory, f"abshyd.{name}"
+                ), "w+"
+        ) as f:
+            reach_ind = 1
+            for edge in study.river.enable_edges():
+                reach = edge.reach
+                lm = len(reach) + 1
+                f.write(f"{lm:>13}\n")
+
+                ind = 1
+                for mail in reach.get_rk():
+                    f.write(f"{ind:>4} {mail:15.3f} {reach_ind:>4}\n")
+
+                    ind += 1
+
+                reach_ind += 1
+
     def _export_stricklers(self, study, repertory, qlog, name="0"):
         self._export_frot(study, repertory, qlog, name=name, version="")
         self._export_frot(study, repertory, qlog, name=name, version="2")