GeoLog

dams

Thirty years after Biescas: Rethinking alluvial fan flooding and infrastructure failure

Asmae Ourkiya August 7, 2026

Aftermath of the 1999 Carbadella flooding. Source: NHESS journal.

Thirty years ago, in August 1996, a catastrophic flash flood swept through the Las Nieves campsite on the alluvial fan of the Barranco de Aras near Biescas in the Central Pyrenees of Aragón, Spain. The tragedy claimed 87 lives and injured over 180 people. This makes it one of the most severe weather-related disasters in modern European history. In the decades following the disaster, geoscientists ...[Read More]

Imaggeo on Mondays: Earthquake Lake

Laura Roberts-Artal April 20, 2015

Sarez lake, born from an earthquake. Credit: Alexander Osadchiev (distributed via imaggeo.egu.eu)

Despite its alluring turquoise waters and rugged mountain backdrop the story behind this beautiful lake is rather more troubling. In today’s Imaggeo on Mondays, the first post since our short break from the traditional format during the General Assembly, Alexander Osadchiev writes about the shaky origins of Sarez Lake. Lake Sarez is situated in Tajikistan, deep in the Pamir Mountains. In 1911 a lo ...[Read More]