Traisen - Living space in the estuary stretch of the river Traisen
The main project objectives are to create a new and dynamic river bed in River Traisen, one of the largest Danube tributaries in Lower Austria; Restore large-scale flooding zones to restore and maintain the alluvial forest priority habitat type 91E0 with typical white willow woods; Link numerous floodplain waters to the new main river; Create a free passage for fish and other water species. The project is expected to implement its measures on a 12.5 km stretch of the meandering River Traisen with dynamic banks and natural riparian forest areas. It is also expected to create a new running water habitat at mean-flow of some 69 ha, where dynamic riparian development can take place. The project foresees the creation of: Various natural river structures in the riparian area between water and land; Some 82 ha of frequently flooded areas, which are suitable for the restoration of the priority habitat type of white willow woods (91E0). It will Increase this habitat type in the target area from 6% to approximately 100%; Stagnant water zones to enrich the water variety of the floodplain by 12 ha; Fish passable cross-links on the floodplain area and various existing water bodies with the new River Traisen and the Danube. This makes permanent fish migration possible in the new River Traisen. At least 40 fish species benefit from this measure, of which 25 species are listed in annex II of the Habitats Directive.