Abstract

On the upper watershed of the Mendoza River, at elevations higher than 4,000 m above sea level and close to the Argentine‐Chilean border, a group of glaciers associated with winter snowfall give birth to runoff main sources. The so‐called Grande del Nevado del Plomo glacier, periodically produces a surge and an ice dam that confines the Plomo river valley and forms a glacier‐dammed lake. The outflow of the ice dam and the routing of flood waves down‐valley are studied by means of hydrologic and hydraulic mathematical simulation for the purposes of flood‐wave forecasting, the operation of a real‐time hydrologic alert system, and determination of inundation maps, as well as the study of the impact on diversion dams, bridges, roads, and railroads along the river.

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