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At the top of July 2023, two younger cattle egrets had been detected at Altmühlsee. Since 1994, water has been pumped from the Danube to the highest of the canal using pumps at the five locks on the southern ramp of the canal, from where it flows downwards over one other barrage into the Rothsee, the place the water is saved and, if mandatory, in two completely different ways can also be delivered to the Regnitz. The Danube-Predominant transfer system consists of a total of three lakes, together...