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Data were collected to estimate the loads of suspended-sediment-bound chemical compounds in five gaged tributaries of the Anacostia River in Washington, D.C.
https://pubs.usgs.gov/sir/2019/5092/sir20195092.pdf |
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Data were collected to estimate the loads of suspended-sediment-bound chemical compounds in five gaged tributaries of the Anacostia River in Washington, D.C.
https://pubs.usgs.gov/sir/2019/5092/sir20195092.pdf |
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Washington, D.C., Department of Energy & Environment (DOEE) Funded
Timothy P. Wilson, Ph.D. (Retired)
Dr. Trevor Needham
Supervisory Hydrologist
email: tneedham@usgs.gov
U.S. Geological Survey MD-DE-DC Water Science Center
5522 Research Park Drive
Baltimore, MD 21228
cell phone: (301) 395-3986
office phone: (443) 498-5584 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>A study was conducted by the U.S. Geological Survey (USGS) in cooperation with the Washington, D.C., Department of Energy & Environment to estimate the loads of suspended-sediment-bound chemical compounds in five gaged tributaries and four ungaged tributaries of the Anacostia River (known locally as “Lower Anacostia River”) in Washington, D.C. Tributaries whose discharge is measured by the USGS are the Northeast and Northwest Branches of the Anacostia River, referred to in this report as “Northeast Branch” (NEB) and “Northwest Branch” (NWB), respectively; Watts Branch (WB); and Hickey Run (HR). A USGS streamflow-gaging station was established in 2016 on Beaverdam Creek (known locally as “Lower Beaverdam Creek” [LBDC]) to support this study. The ungaged streams studied include Nash Run; Pope Branch; an unnamed stream at Fort DuPont, referred to in this report as “Fort DuPont Creek”; and an unnamed stream at Fort Stanton, referred to in this report as “Fort Stanton Creek.” The gaged streams were sampled during four to five storms and two low-flow events during January, March, May, and July 2017. The ungaged streams were sampled during one storm and one low-flow event during July 2017. Storm sampling involved collecting large-volume (60- to 70-liter) composite samples, then removing sediment by filtration in the laboratory. Low-flow samples were obtained by filtering streamwater directly in the field. Continuously recording data sondes were deployed throughout the study to measure turbidity and other water-quality characteristics. During sampling, multiple discrete samples of streamwater were collected to determine suspended-sediment concentration (SSC) and particulate organic carbon (POC) concentration. Shortly after each storm, bed sediment was collected for chemical analysis.</SPAN></P><P><SPAN /></P><P><SPAN>Sediment samples were analyzed for 209 polychlorinated biphenyl (PCB) congeners; 35 polyaromatic hydrocarbon (PAH) compounds, including 20 nonalkylated and 15 alkylated species; and 20 organochlorine pesticide (OP) compounds. Sediment from one storm was analyzed for 23 metals.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Users are advised to contact</SPAN></P></DIV></DIV></DIV> |
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USGSsamplingLocations_1 |
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["inlandWaters","District of Columbia","Northwest Branch Anacostia River","Anacostia River","Lower Beaver Dam Creek","Washington D.C.","Watts Branch","Northeast Branch Anacostia River","USGS:5d487faae4b01d82ce8dddc4","Hickey Run"] |
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en-US |
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150000000 |
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