Public Water Supply For Drinking And Agricultural Water

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Brazos River, the streams and lakes along the river are a major source of public water supply for drinking and agricultural uses for communities in around the Brazos River basin. Segment 1242 of Brazos River and the watersheds (Leon River watershed and Lower Brazos-Little Brazos watershed) and their tributaries flowing into Brazos river in this segment are known to be impaired for bacteria, salts, nutrients and chlorophyll-a (TCEQ, 2013). The flow of nutrients from rain water run-off from land into Brazos River results in eutrophication of the river and algae (Chlorophyll-a) bloom, thereby reducing the dissolved oxygen content in the water. This hypoxia in the water causes the death of fish and other living organisms in the river. This can…show more content…
4.2 Objectives The purpose of modeling the fate and transport of pollutants in surface water is for a better understanding of the relationship between pollutant loads during rainfall events and to be able to simulate and make predictions of future water quality conditions. By connecting stream flow rates model to pollutant loads, the relationship between pollutant transport and water quality can be determined. For this research, models of the fate and transport of the chloride and sulfate in Leon River was constructed. 4.3 Conceptual Model The conceptual model for this research is a network model which models the rate of flow of pollutant through a connected network of points in surface water. The water quality monitoring stations represent such points and serve as containers. From analysis of the water quality monitoring measurements of pollutants at each chosen station, it is observed that the concentration levels of pollutants tend to be high where it has not rained for a long time compared to where it rained the previous day or few days ago. This then can be interpreted to mean that the concentration of pollutant in surface water is proportional to the amount of water in the surface water body. Drought condition will concentrate the pollutants, while on the other hand rain events help to dilute the pollutes because of increase of water and also contribute to the flow of the pollutant from one point to the other
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