Bergsturz in Brienz: The Ongoing Threat of Rockfalls
Bergsturz Risk Framework in Brienz
In mid-June 2023, a landslide in Brienz GR led to the displacement of approximately 1.2 million cubic meters of debris. Residents had been evacuated two months prior to this incident. In July 2023, they were allowed to return, but the threat of further landslides persists.
Current Geological Assessments
- The local community of Albula/Alvra reports increased landslide velocities in certain sections of the cliff.
- While extreme rapid flows are not completely ruled out, the risk to Brienz/Brinzauls and eastern Vazerol remains substantial.
- The early warning service indicates a high level of certainty that the village of Brienz is not at risk.
Risks and Recommendations
- Respect Other Restrictions: Authorities stress the importance of adhering to safety barriers and access limitations.
- Areas currently secure: The western part of Vazerol and Surava show no risk from landslides.
- Residual Risk: The industrial area in Tiefencastel faces a minimal remaining threat.
Future Projections of Bergsturz Events
Geologically, the rate of landslide activity has been increasing in recent years, indicating a rising likelihood of significant rockfalls.
According to geologist Reto Thöny, rapid debris flows are anticipated to be the most probable type of bergsturz in Brienz. Recent incidents, such as last summer, demonstrate the potential for rock instability impacting the area.
This article was prepared using information from open sources in accordance with the principles of Ethical Policy. The editorial team is not responsible for absolute accuracy, as it relies on data from the sources referenced.