Posted inThe Landslide Blog

Another landslide dam flood at the site of the Matai’an rock avalanche in Taiwan

Failure of the landslide debris from the Matai’an rock avalanche allowed another barrier lake to form. This breached on 21 October 2025, generating another damaging debris flow. Newspapers in Taiwan are reporting that a new landslide barrier lake formed and then failed at the site of the giant Matai’an rock avalanche. The breach event apparently […]

Posted inThe Landslide Blog

The aftermath of the Matai’an landslide and dam breach in Taiwan

Good digital data is now being published that presents the scale of landscape change that occurred as a result of the Matai’an landslide hazard cascade. There is also interesting information about the root causes of the vulnerability of the town of Guangfu, where the fatalities occurred. Some interesting information is now emerging about the Matai’an […]

Posted inThe Landslide Blog

An update on the 21 July 2025 rock avalanche in the Matia’an valley, in Wanrong township in eastern Taiwan.

Following the passage Typhoon Podul, the lake created by this massive landslide has now grown considerably. Overtopping is expected in October, although could occur sooner if further heavy rainfall occurs. The landslide-dammed lake behind the the enormous 21 July 2025 rock avalanche in the Matia’an valley, in Wanrong township in eastern Taiwan continues to fill. […]