The Old Bavarian Donaumoos (German: Altbayerisches Donaumoos) is an old fen on the southern side of the Danube, southwest of Ingolstadt, Bavaria, in the Neuburg-Schrobenhausen district. The fen, drained from 1790 onwards, has now dropped 3 metres (9.8 ft) in surface level because of the drainage and associated environmental effects. The Donaumoos was once the largest area of fenland in Southern Germany. It is one of two former fens named Donaumoos, the other being the Swabian Donaumoos (German: Schwäbisches Donaumoos), also predominantly located in Bavaria, between Ulm and Gundelfingen. Of the Bavarian fens, the Moose, 95 percent have been dried out, a trend the Bavarian government wishes to reverse by re-flooding some of the former fens. From Wikipedia
