Humans and physical characteristics of the Claromeco River Basin, Argentina

The characteristics of the Claromeco basin, located in the southeast of the province Buenos Aires, Argentina, are described. There are no previous studies of the river, although it has a great significance in the agricultural activities of the region. The study zone is characterized by farming, agricultural and cattle raising activities. The river which flows across a plain, results from the confluence of three courses - the Seco creek or 3rd branch in the west, the Medio or 2nd branch in the centre, and the Orellano creek or 1st branch in the east. The measuring methods planimetry, weighing, grease-proof paper, and curvometer were used to analyze the basin. The basin of Claromeco creek has an area of 3,017.18 km2, its perimeter is 285 km and its principal creek is 135 km long. Two different types of drainage were identified dendritic and anarchic.El objetivo del presente trabajo es determinar las características de la cuenca hidrográfica del Arroyo Claromecó, ubicado en el sudeste de la provincia de Buenos Aires, República Argentina. Se trata de un arroyo de llanura, conformado a partir de la confluencia de tres cursos; el arroyo Seco o tercer Brazo al oeste, el arroyo Medio o segundo Brazo al centro y el arroyo Orellano o primer Brazo al este. Los parámetros hidrográficos de la cuenca se calcularon utilizando la metodología del planímetro, pesaje, vegetal cuadriculado y curvímetro. La superficie de la cuenca de drenaje del arroyo Claromecó es de 3.017,18 km cuadrados, su perímetro de 285 kilómetros y el curso principal alcanza los 135 km. Los diseños de drenaje predominantes son el anárquico en la cuenca alta y el dendrítico en la cuenca media