In autumn 2022, alpine farmers dredged around 1.6 kilometers along the Rappenalpbach stream. Their aim: to repair the damage caused by a flood in August. Bavarian Environment Minister Thorsten Glauber has now announced the restoration of the stream in the Allgäu Alps.
In autumn 2022, alpine farmers dredged around 1.6 kilometers along the Rappenalpbach stream. Their aim: to repair the damage caused by a flood in August. Bavarian Environment Minister Thorsten Glauber has now announced the restoration of the stream in the Allgäu Alps.
The Rappenalp Valley is located in the Allgäu High Alps, close to the Austrian border. The area is protected in many ways, it is designated as a nature reserve, landscape conservation area and Natura 2000 site. A torrent, the Rappenalpbach, runs through the valley.
After a flood in August 2022, the alpine farmers who farm the adjacent land wanted to repair the flood damage. An on-site meeting was held with the lower nature conservation authority at the end of August. Those present discussed how the effects of the flood could be eliminated. The meeting was recorded in the form of a memo.
The alpine farmers began work in September. At the beginning of October, the lower nature conservation authority ordered a halt to construction. The reason for this was that the alpine farmers had channelized the torrent over a length of 1.6 kilometers and deepened it by up to 2.5 metres. The bed of the stream was breached. The torrent dried up in places in the gravel bed. The authorities measured and documented the extent of the construction work using a drone.
In November, the district office issued an order that immediate measures should be taken to reduce the increased flood risk caused by the work. Those responsible were to tear down dams at various points along the Rappenalpbach. The costs were to be borne by the alpine cooperative.
The alpine cooperative appealed against the decision of the district office. After the Augsburg Administrative Court initially rejected the urgent appeal, the Bavarian Administrative Court came to the conclusion that the district office had committed procedural errors.
The fundamental legal review in the main proceedings is still ongoing.
After the alpine cooperative had already reopened the first dams, Bavarian Environment Minister Thorsten Glauber announced in the Bavarian State Parliament’s Environment Committee on 26.01.2023 that more extensive renaturation measures would be carried out after the snow melted. The plan is to reverse the channelization and deepening of the stream. The restoration of the habitat will probably take several years. Afterwards, the Rappenalpbach is to return to its original riverbed. The projects are to be supervised by the lower nature conservation authority and specialist offices.
As reported by Bayerischer Rundfunk, a reply to a question from the Green Party in the state parliament also reveals that the ministry estimates that the protected FFH habitat type “Alpine rivers with herbaceous riparian vegetation” has been completely destroyed in the area of the intervention during the course of the work. It can also be assumed that the habitats of protected species such as the Alpine salamander(Salamandra atra) or the red-winged grasshopper(Psophus stridulus) in particular were impaired or destroyed. Furthermore, it cannot be ruled out that protected species were killed in the course of the work.
The legal investigation into what happened will continue. Regardless of who is to blame, it is already possible to imagine the extent of the damage caused by the development of the watercourse.
Especially in light of the current UN Decade of Ecosystem Restoration and the current negotiations on the EU Nature Restoration Act, landscape architects are all the more called upon to find creative solutions for the protection and restoration of valuable habitats in the future.












