Tidy up river update function

app/update_river_model/file/update_river_data.py

@@ -64,7 +64,8 @@ else:
                         for i in range(0, len(forecast_data['times'])):
                             this_temp[i] = np.average(forecast_data['T2'][i,:,:], weights=this_river.wrf_catchment_factors)
                         this_river.addToSeries('catchment_temp', this_temp, forecast_data['times'], override=True)
-
+                        if hasattr(this_river, 'river_obj'):
+                            this_river.catchment_precipitation = this_river.river_obj.catchment_precipitation
             except:
                 new_missing_dates.append(this_date)
             missing_dates = new_missing_dates[:]