Hydraulic’s model based on HEC-GeoRAS; HECHMS and ARC-MAP computer programs to assess Sediments stored on HE sink

Abstract

The sediments store capacity of the Escobar Brothers (HE) Sink in Juárez City, Chihuahua, Mexico is at risk of being exceeded. Therefore, it deserves to be revised and redesigned to provide security to the inhabitants of the area. It is common that during the summer season, periodical storms of high intensity and short duration provokes water as well storage of coarse and fine soils. In summary, this research focuses on finding the geotechnical and hydraulic response produced by the storms typical of the arid region. This response is reflected in the rate of sediment carried by the main streams of the watershed. The aim of this research is: Sediment evaluation which in turn depends on the intensity and time of precipitation which involves an analysis of the rains of varying intensity and frequency. Therefore, the amount of fine sediment (silt-clay soils) and colloidal (silt transport) were evaluated. After that, hydraulic and hydrological models for erosion, transportation and deposition of coarse sediments (gravel-sands) were applied. To achieve this, three computer programs were used. The program Arc-Map 10.2 which was feed with Lydar database points to produce the Digital Elevation Model (DEM). With this model and by the use of the HEC-HMS program were performed watersheds and hydrological models. Finally, the program HEC-GeoRAS and HEC-RAS was used to simulate the hydraulic model and assessing the coarse sediments eroded, transported and deposited.