. Moreover, the permission for maximum discharge of the Lippe into the West German canal system was increased to 10 m³/second again but now with the additional limitation to guarantee a minimum discharge of 10 m³/second in the Lippe, too, otherwise the water abstraction for the canals had to be limited. This regulation was possible because of already constructed pumps at the sluices that started compensating partly the loss of water from locking.