Oude IJssel 旧艾瑟尔河
Oude IJssel (Dutch), literally old IJssel, or Issel (German) is a river in Germany and the Netherlands approximately 80 km long. It is a right tributary of the river IJssel.
Oude IJssel means "Old IJssel" in Dutch; the Oude IJssel was the upper course of the IJssel until the connection with the Rhine was dug, possibly in the Roman era.