期刊
JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION
卷 54, 期 6, 页码 1197-1221出版社
WILEY
DOI: 10.1111/1752-1688.12680
关键词
sediment fingerprinting; bank erosion; Chesapeake Bay; sediment TMDL
资金
- U.S. Geological Survey (USGS) Chesapeake Bay program
- U.S. Environmental Protection Agency (USEPA) Regions 3 and 5
The sediment fingerprinting approach was used to apportion fine-grained sediment to cropland, pasture, forests, and streambanks in the agricultural and forested Smith Creek, watershed, Virginia. Smith Creek is a showcase study area in the Chesapeake Bay watershed, where management actions to reduce nutrients and sediment are being monitored. Analyses of suspended sediment at the downstream and upstream sampling sites indicated streambanks were the major source of sediment (76% downstream and 70% upstream). Current management strategies proposed to reduce sediment loadings for Smith Creek do not target streambanks as a source of sediment, whereas the results of this study indicate that management strategies to reduce sediment loads in Smith Creek may be effective if directed toward managing streambank erosion. The results of this study also highlight the utility of sediment fingerprinting as a management tool to identify sediment sources.
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