Thanks in advance 2(5 pts) Water quality is largely determined by characteristic

Question

Thanks in advance
2(5 pts) Water quality is largely determined by characteristics of the watershed. In the table below, for each water quality characteristic provide a description of the watershed that would explain the observed water quality characteristics Water Quality Characteristic Explain why the watershed characteristic would lead to the given water quality characteristic Watershed Characteristic High E. coli concentrations High turbidity levels High peak flows, but low baseline flows Low dissolved oxygen levels Higher than normal water temperatures

Explanation / Answer

the presence of E.coli(fecal coliform bacteria) indicates the sewage contamination of water and presence of other pathogens also.

Water Quality characteristics Watershed Characteristics Explain why the watershed characteristic would lead to the given water quality characteristics High E,coli concentrations

the presence of E.coli(fecal coliform bacteria) indicates the sewage contamination of water and presence of other pathogens also.

e.coli in waterbody indicates that water has been contaminated by human excreta and other pathogens which are transported to the site by the streams and contaminated rivers at the time of heavy rainfall. High Turbidity levels High turbidity means more sediments in the watershed which affects light penetration and productivity which may harm the auatic life. when water body intakes water from streams there is a sudden increase of sediment lode in the waterbody which increases turbidity in water. High peak flow, but low baseline flows high peak flow but lowbase flow indicates there is high energy regime at the top and lowenergy at the bottom means finer and well sorted particles at the base and poorly sortedat the top this condition is due to the sudden hit of a storm in a stream channel which is perenially running with its base flow Low dissolved oxygen levels lower dissolved oxygen in water may cause disbalance in aquatic organisms, also affects nutrition level in water the dissolved oxygen concentration depends on temperature, salinity, elevation of waterbody and also by human activity. Increasein any of these causes change in concentration of dissolved oxygen. Higher than normal water temperatures high temperature causes loss of nutrition for aquatic animals and plants, also affects salinity and oxygen concentration in water. sudden temperation may increase due to climate change, mixing of radiogenic elements in water and due to greenhouse gases

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