page_title: Barnbruch
section_title: Drainage
hierarchical_section_title: Barnbruch / Drainage
caption_attribution_description: Deutsch: Allerkanal im Barnbruch nahe Gifhorn English: The Aller Canal in the Barnbruch woods near Gifhorn, Lower Saxony, Germany
context_page_description: The Barnbruch is a wetland of international importance in the old glacial valley of the river Aller that provides a habitat for endangered species of birds, amphibians and insects. It lies between the city of Wolfsburg and town of Gifhorn and consists of an enclosed woodland area of around 1,500 hectares with surrounding meadows and pastures. This low-lying depression lies partly within the territory of the city of Wolfsburg and partly within Gifhorn district. Together with the Drömling around 15 km to the east, the Barnbruch is the most valuable ecological lowland region along the upper course of the Aller.
context_section_description: Originally the Barnbruch was a carr (Bruchwald) or fen woodland. In 1830 it was the cause of complaint by the inhabitants of the neighbouring villages to their king. They said that, for years, they had not been able to harvest any hay and that their farms had been ruined by floods. Following a state treaty in 1860 between Prussia, the Kingdom of Hanover and Duchy of Brunswick over the regulation of the Aller and the Ohre, work began on draining the area. The main contribution to this effort was the Aller Canal, built 1860-63, between Wolfsburg and Gifhorn. Draining the land of water turned the swamps into a wetland with a rich variety of trees, in which both fen and riverside woods with birch, oak, ash and alder trees could flourish. Today large parts of the Barnbruch are nature reserves, in which several areas have been left to evolve without any human intervention.
caption: The Aller Canal has drained the Barnbruch since 1863.
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