Diseño de modelo de calidad de agua superficial en la Quebrada El Arenal, Municipio Junín - Cundinamarca en época de estiaje

The water’s quality of the Quebrada El Arenal, it is an issue of big importance in the town of Junin, because it is the main source of water receiving this population. The purpose of this paper is to design a simulation model surface water quality resource mentioned, should determine the allocation of domestic discharges in the dry season. The methodology used for the article is based on the determination of the water quality, environmental analysis and interpretation of pollutant loads from domestic discharges and the determination of the different variables used for the model in the QUAL2K program. The results obtained show moderate and good condition of the water body at the time of study and low pollutant loads of the two discharges, therefore the self-purification capacity of the water body, noting that the main problem in Quebrada El Arenal, is the presence of total coliforms and nutrients (nitrogen and phosphorus).