Preliminary morphometric analysis: Río Talacasto basin, Central Precordillera of San Juan, Argentina

GINESTA TORCIVIA CARLA EMILIA; RIOS NATALIA NOEMI

Advances in Geomorphology and Quaternary Studies in Argentina

Springer Nature

Año: 2019; p. 158 - 168

This work analyzes various morphometric characteristics of Río Talacasto basin, situated approximately 80 km northwest of the San Juan city, in Central Precordillera geological province. Various morphometric parameters were analyzed in order to evaluate its flash flood hazard. For this purpose, some measurements (area, perimeter, length, width, maximum and minimum height and Strahler order, slope, aspect, curvature and convergence index, topographic position index, and roughness index) were calculated. These measurements allows for future analysis to predict approximately the behavior of the basin in the presence of a series of theoretical rainstorms that may generate unusual runoff volumes.The importance of this evaluation is, that the basin includes the National Route 149 and the Provincial Route 436, both being the main accesses to the northern and western portions of the province. The results obtained conclude that the basin has a significant susceptibility to the occurrence of flash floods and other landslides