diff --git a/src/View/Results/PlotRKC.py b/src/View/Results/PlotRKC.py
index dc658c65..ca3f005f 100644
--- a/src/View/Results/PlotRKC.py
+++ b/src/View/Results/PlotRKC.py
@@ -109,12 +109,8 @@ class PlotRKC(PamhyrPlot):
         table = results.get("table")["zfd"]
         ts = results.get_timestamp_id(self._current_timestamp)
 
-        zfd = list(
-            map(
-                lambda p: table[ts, p.global_index],
-                reach.profiles
-            )
-        )
+        gi_0, gi_1 = reach.global_index
+        water_z = table[ts, gi_0 : gi_1 + 1]
 
         self.line_bottom, = self.canvas.axes.plot(
             rk, zfd,
@@ -178,14 +174,8 @@ class PlotRKC(PamhyrPlot):
             table = result.get("table")["Z"]
             ts = result.get_timestamp_id(self._current_timestamp)
 
-            water_z = list(
-                map(
-                    lambda p: table[
-                        ts, p.global_index
-                    ],
-                    reach.profiles
-                )
-            )
+            gi_0, gi_1 = reach.global_index
+            water_z = table[ts, gi_0 : gi_1 + 1]
 
             self.water = self.canvas.axes.plot(
                 rk, water_z,
@@ -209,16 +199,8 @@ class PlotRKC(PamhyrPlot):
             table = result.get("table")["Z"]
             ts = result.get_timestamp_id(self._current_timestamp)
 
-            water_z = list(
-                map(
-                    lambda p: np.max(
-                        table[
-                            :, p.global_index
-                        ]
-                    ),
-                    reach.profiles
-                )
-            )
+            gi_0, gi_1 = reach.global_index
+            water_z = table[ts, gi_0 : gi_1 + 1]
 
             self.canvas.axes.plot(
                 rk, water_z, lw=1.,
@@ -354,14 +336,8 @@ class PlotRKC(PamhyrPlot):
         table = result.get("table")["Z"]
         ts = result.get_timestamp_id(self._current_timestamp)
 
-        water_z = list(
-            map(
-                lambda p: table[
-                    ts, p.global_index
-                ],
-                reach.profiles
-            )
-        )
+        gi_0, gi_1 = reach.global_index
+        water_z = table[ts, gi_0 : gi_1 + 1]
 
         self.water[0].set_data(
             rk, water_z
@@ -402,10 +378,7 @@ class PlotRKC(PamhyrPlot):
         table = results.get("table")["zfd"]
         ts = results.get_timestamp_id(self._current_timestamp)
 
-        zfd = list(map(
-            lambda p: table[ts, p.global_index],
-            reach.profiles
-        ))
+        zfd = table[ts, reach.global_index]
 
         self.line_bottom.remove()