Index: doc/_images/wflow_bifurcation.png
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Index: doc/wflow_sbm.rst
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diff -u -r346aaa0aa1886a596db70bee9c4fa5dc7710daab -r8efcc13f67579d79e0d1eca4491cbae2dc058341
--- doc/wflow_sbm.rst	(.../wflow_sbm.rst)	(revision 346aaa0aa1886a596db70bee9c4fa5dc7710daab)
+++ doc/wflow_sbm.rst	(.../wflow_sbm.rst)	(revision 8efcc13f67579d79e0d1eca4491cbae2dc058341)
@@ -846,8 +846,34 @@
    This option has only be tested in combination with a monthly LAI climatology as input. If a DemandReturnFlowFraction
    is defined this fraction is the supply is returned to the river at the wflow_irrisurfacereturns.map points.
 
+Bifurcations
+---------------------------
 
+A PCRaster local drainage direction (ldd) map only alows for one downstream neighbor cell. Bifurcations can be included in Wflow
+by providing the following files:
+ 
+:wflow_bifurcations.map: PCRaster ordinal map, identifying all bifurcations; cells having two downstream neighbors which
+cannot be represented in the ldd map.
 
+:wflow_bifurcations_ds.map: PCRaster ordinal map, identifying the locations in the bifurcation canal to which a part of the
+main river discharge, at the location of bifurcation, should be diverted to
+
+:Bifurcations.tbl: a table with the part of the discharge (self.SurfaceRunoff) at the location of the bifurcation, 
+specified in wflow_bifurcations.map, which is diverted to the location specified in wflow_bifurcations_ds.map.
+Example of a tbl-file::
+
+        1 0.5
+        2 0.3
+
+The locations in wflow_bifurcations.map are interpreted as sinks, where a part of the total flow will be extracted. 
+The locations in wflow_bifurcations_ds.map are intepreted as sources, where a the extracted part will be supplied.
+
+.. figure:: _images/wflow_bifurcation.png
+    :width: 640px
+    :align: center
+
+    Figure showing (left) wflow_bifurcations.map, (middle) wflow_bifurcations_ds.map, (right) wflow_ldd.map
+
 Kinematic wave and River Width
 ------------------------------