Open-File Report 2010–1071
The U.S. Geological Survey, in cooperation with the government of Charles County, Maryland, and the Port Tobacco River Conservancy, Inc., conducted a water-quality reconnaissance and sampling investigation of the Port Tobacco River and Nanjemoy Creek watersheds in Charles County during October 2007 and June–August 2008. Samples were collected and analyzed for major ions, nutrients, organic wastewater compounds, and other selected constituents from 17 surface-water sites and 11 well sites (5 of which were screened in streambed sediments to obtain porewater samples). Most of the surface-water sites were relatively widely spaced throughout the Port Tobacco River and Nanjemoy Creek watersheds, although the well sites and some associated surface-water sites were concentrated in one residential community along the Port Tobacco River that has domestic septic systems. Sampling for enterococci bacteria was conducted by the Port Tobacco River Conservancy, Inc., at each site to coordinate with the sampling for chemical constituents. The purpose of the coordinated sampling was to determine correlations between historically high, in-stream bacteria counts and human wastewater inputs. Chemical data for the groundwater, porewater, and surface-water samples are presented in this report.
First posted April 30, 2010
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Lorah, M.M., Soeder, D.J., and Teunis, J.A., 2010, Summary of organic wastewater compounds and other water-quality data in Charles County, Maryland, October 2007 through August 2008: U.S. Geological Survey Open-File Report 2010–1071, 19 p., plus appendixes. (Available at https://pubs.usgs.gov/ofr/2010/1071/.)
Purpose and Scope
Description of Study Area
Methods of Investigation
Sample Collection and Analysis
Field Parameters and Major and Minor Inorganic Constituents
Nutrients and Organic Carbon
Organic Wastewater Compounds