Sediment and phorphorus changes in an impaired stream before and during a stream restoration project
Eason, James Louis
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Water quality impairment of the nation’s streams has become a major topic of importance for both research and regulatory agencies over the past few decades. This highlighted importance has led to research on stream restoration to improve water quality impairments. For this study, monitoring of a stream in Demorest, GA began 4 months prior to construction of a stream restoration project and continued throughout the construction phase of the project until vegetation was reestablished. Manual grab samples were analyzed for suspended sediment and total phosphorus concentrations and results from pre-construction and construction time periods were compared. This study found that the construction activities added a significant amount of sediment to the stream but these changes were not sustained for long periods of time. There were no significant changes seen in total phosphorus. In-situ, bedload, substrate and cross-sectional changes during construction are also discussed.