Species protection report of the ecological construction supervision – Slope stabilization at Wienerwaldsee
Client: City of Vienna, Municipal Department MA 45 – Water Management
Project Duration: 2024–2025
Project Description: Erosion and slope failures were observed on the eastern shore of the Wienerwaldsee, located in the municipality of Purkersdorf. A cycling and pedestrian path runs along the shore, with the Laaber Straße (B13) situated directly behind it. To ensure the safety of these transport routes, the City of Vienna – Water Management decided to rehabilitate the affected shoreline area.
TB Raab GmbH was commissioned to provide ecological construction supervision. This role involved monitoring construction activities and ensuring their compliance with official permits, expert reports, opinions, and the conditions stipulated under the exceptional nature conservation permit and legal environmental approvals.
Key responsibilities included supervising the implementation of ecological structural measures such as the creation of stone and deadwood piles, fish spawning aids (e.g., submerged rootstocks), and the ecological design of partial areas with initial planting in the riprap zone. Additionally, the revegetation of the newly constructed slope using site-appropriate initial planting was overseen. This included specifying suitable planting material (species and quantity) and developing a planting scheme.
Project Duration: 2024–2025
Project Description: Erosion and slope failures were observed on the eastern shore of the Wienerwaldsee, located in the municipality of Purkersdorf. A cycling and pedestrian path runs along the shore, with the Laaber Straße (B13) situated directly behind it. To ensure the safety of these transport routes, the City of Vienna – Water Management decided to rehabilitate the affected shoreline area.
TB Raab GmbH was commissioned to provide ecological construction supervision. This role involved monitoring construction activities and ensuring their compliance with official permits, expert reports, opinions, and the conditions stipulated under the exceptional nature conservation permit and legal environmental approvals.
Key responsibilities included supervising the implementation of ecological structural measures such as the creation of stone and deadwood piles, fish spawning aids (e.g., submerged rootstocks), and the ecological design of partial areas with initial planting in the riprap zone. Additionally, the revegetation of the newly constructed slope using site-appropriate initial planting was overseen. This included specifying suitable planting material (species and quantity) and developing a planting scheme.
Lowered water level at the confluence of the Wolfsgraben with deep sediment deposits (photo taken on 09 October 2024). Thousands of river and pond mussels were collected and brought to deeper water.
Status of the slope stabilization works on 04 December 2024. The rock armour was laid without grouting to create fissured wall and rock structures.
Rootstock anchored with steel cables as a structural enhancement measure (photo taken on 04 December 2024).
Whether you’re interested in collaboration, project details, or expert consultation, we’re here to help.