Debris flood hazard documentation and mitigation on the Tilcara alluvial fan (Quebrada de Humahuaca, Jujuy province, North-West Argentina)

A recent study identifies debris flood hazards on the Tilcara alluvial fan in Quebrada de Humahuaca, Argentina, threatening urban areas and transportation routes. The research documents decadal debris floods triggered by the Huasamayo Stream, emphasizing the urgent need for hazard assessment and mitigation strategies to protect the UNESCO World Cultural Heritage site from increasing vulnerability due to tourism and urbanization. The study proposes cost-effective solutions, such as constructing an upstream dam and artificial channel to divert floodwaters, using locally available technologies with minimal environmental impact. These measures aim to balance conservation efforts with safe exploitation for inhabitants and tourists.

Marcato, G., Bossi, G., Rivelli, F., & Borgatti, L. (2012). Debris flood hazard documentation and mitigation on the Tilcara alluvial fan (Quebrada de Humahuaca, Jujuy province, North-West Argentina). Natural Hazards and Earth System Sciences, 12(6), 1873–1882. https://doi.org/10.5194/nhess-12-1873-2012