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USGSsamplingLocations_1
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GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_Web_Mercator_Auxiliary_Sphere
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20251209
12293400
20251209
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5000
FGDC
Andrew E LaMotte
U.S. Geological Survey, Northeast Region
Geographer
443-498-5549
443-498-5510
5522 Research Park Drive
Baltimore
MD
21228
US
alamotte@usgs.gov
20251209
ArcGIS Metadata
1.0
GS ScienceBase
U.S. Geological Survey
1-888-275-8747
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
US
sciencebase@usgs.gov
None
Digital Data
https://doi.org/10.5066/P9RUZSMV
https://doi.org/10.5066/P9RUZSMV
File Geodatabase Feature Class
USGSsamplingLocations_1
2020-02-19
Wilson, Tim P.
comma separated text
<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>
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
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
Timothy P Wilson
U.S. Geological Survey, Northeast Region
Hydrologist (RGE)
609-771-3963
609-771-3915
3450 Princeton Pike
Lawrenceville
NJ
08648
US
tpwilson@usgs.gov
District of Columbia
Washington D.C.
Northwest Branch Anacostia River
Anacostia River
Lower Beaver Dam Creek
Watts Branch
Northeast Branch Anacostia River
Hickey Run
ISO 19115 Topic Category
inlandWaters
USGS Metadata Identifier
USGS:5d487faae4b01d82ce8dddc4
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
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
None. Please see 'Distribution Info' for details.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Users are advised to contact</SPAN></P></DIV></DIV></DIV>
observed
2003-10-29
2018-01-25
-77.1449
-76.7816
38.8228
39.1585
Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.0.10450
1
-77.029287
-76.864854
39.020083
38.863917
Trevor Needham
U.S. Geological Survey, Northeast Region
Hydrologist
Data values fall within expected range(s).
Data are considered complete for the study.
Attribute accuracy assessment was performed during collection and entry into National Water Information System.
Relations were developed among turbidity, discharge, and measured suspended sediment concentration by using multiple linear regression of log-transformed data. These relations were used to estimate suspended sediment concentration from continuous records of discharge and turbidity and were subsequently used to estimate sediment loads for the 2017 calendar year. USGS continuous records of turbidity in Northeast Branch, Northwest Branch, Watts Branch, and Hickey Run were available for 2013-17, which allowed sediment loads to be calculated for these years.
2018-12-31
USGSsamplingLocations_1
Feature Class
26
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dataset
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