Sediments transportation in the La Plata River, Mutiscua, Norte of Santander, municipality influence area

Abstract

In the present investigation, the main factors that intervene in the sediment transport project in the La Plata River, Mutiscua municipality, Norte de Santander, in the area of influence of the municipal head were identified and analyzed. For this, information was collected on: characterization of the zone, topographic survey of the channel by means of cross sections, morphometric characterization, IDF curves, hygrogram and hydrographs, identification of points, sediment sampling (with manual equipment) and sediment classification using granulometric. The compiled data were modeled in HEC-RAS 5.0 and ArcGIS 10.2, and the main dominant and influential factors were obtained on the channel, the profile of the section evaluated, the IDF curve with indications that the shorter the duration, the greater the intensity as a function of the time of return, variations in flow rate due to the precipitation behavior and the flows collected by the fish seasons; the predominant granulometry is sand gravel and sand. In conclusion, in the model of the basin there are vulnerable zones that correspond to: las vegas of the farms in the section between the bridge Salts and the Mill Monarch; flood risk zones, such as: Monarca Mill, 4 fish stations, the area of   the road Sucre and Antigua Marmolería, Hogar Juvenil Campesino and the area of the municipal shed on its right bank. It was emphasized that the study area presents a greater tendency to be undermined or eroded and that the hydraulic structures would be directly affected; in addition, sedimentation zones are present in a smaller proportion.