diff --git a/src/View/Results/PlotRKC.py b/src/View/Results/PlotRKC.py
index 2c09035c..7e82f458 100644
--- a/src/View/Results/PlotRKC.py
+++ b/src/View/Results/PlotRKC.py
@@ -210,6 +210,31 @@ class PlotRKC(PamhyrPlot):
                 linestyle='dotted',
             )
 
+    def draw_additional_data(self, res_id):
+        results = self.results[res_id]
+
+        self._add_data_lines = []
+
+        for data in results.get("additional_data"):
+            data = data._data
+            x, y = data['x'], data['y']
+            legend = data['legend']
+            unit = data['unit']
+
+            if (
+                    data['type_x'] == 'water_elevation' and
+                    data['type_y'] == 'time'
+            ):
+
+                line, = self.canvas.axes.plot(
+                    x, y, marker="+",
+                    label=legend + ' ' + unit
+                )
+
+                self._add_data_lines.append(line)
+
+        self.canvas.draw_idle()
+
     def draw_current(self, reach):
         rk = reach.geometry.get_rk()
         z_min = reach.geometry.get_z_min()
@@ -332,6 +357,10 @@ class PlotRKC(PamhyrPlot):
             alpha=0.7, interpolate=True
         )
 
+    def update_additional_data(self):
+        self.draw_additional_data(0)
+        self.update_idle()
+
     def update_current(self):
         results = self.results[self._current_res_id]
         reach = results.river.reach(self._current_reach_id)
diff --git a/src/View/Results/Window.py b/src/View/Results/Window.py
index e46088bd..8263db4b 100644
--- a/src/View/Results/Window.py
+++ b/src/View/Results/Window.py
@@ -1398,25 +1398,9 @@ class ResultsWindow(PamhyrWindow):
     def update_plot_additional_data(self):
         results = self._results[self._current_results[0]]
 
+        self.plot_rkc.update_additional_data()
+        self.plot_h.update_additional_data()
+
         for data in results.get("additional_data"):
-            data = data._data
-            x, y = data['x'], data['y']
-            legend = data['legend']
-            unit = data['unit']
-
-            if (
-                    data['type_x'] == 'water_elevation' and
-                    data['type_y'] == 'time'
-            ):
-                line = self.canvas_2.axes.plot(
-                    x, y, marker="+",
-                    label=legend + ' ' + unit
-                )
-                self.plot_rkc.canvas.draw_idle()
-                self.plot_rkc.update_idle()
-
-            if data['type_x'] == 'time' and data['type_y'] == 'discharge':
-                self.plot_h.update_additional_data()
-
             for p in self._additional_plot:
                 self._additional_plot[p].add_imported_plot(data)