The National Water-Quality Assessment (NAWQA) Program : Delmarva Peninsula

Reports

Ator, S.W., Denver, J.M., and Brayton, M.J., Hydrologic and geochemical controls on pesticide and nutrient transport to two streams on the Delmarva Peninsula: U.S. Geological Survey Scientific Investigations Report 2004-5051.

Bachman, L.J., 1994, Hydrologic control of dissolved aluminum in the baseflow of streams on the Delmarva Peninsula, Delaware and Maryland, U.S.A.: Washington, D.C., George Washington University, Ph.D. dissertation, 107 p.

Bachman, L.J., and Ferrari, M.J., 1995, Quality and geochemistry of ground water in Southern New Castle County, Delaware: Newark, Del., Delaware Geological Survey, Reports of Investigations 52, 31 p.

Bachman, L.J., and Phillips, P.J., 1996, Hydrologic landscapes on the Delmarva Peninsula—Part 2: Estimates of base-flow nitrogen load to Chesapeake Bay: Water Resources Bulletin, v. 32, no. 4, p. 779-791.

Bachman, L.J., Shedlock, R.J., and Phillips, P.J., 1987, Ground-water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia—Project description: U.S. Geological Survey Open-File Report 87-112, 18 p.

Bohlke, J.K., and Denver, J.M., 1995, Combined use of groundwater dating, chemical, and isotopic analyses to resolve the history and fate of nitrate contamination in two agricultural watersheds, Atlantic Coastal Plain, Maryland: Water Resources Research, v. 31, no. 9, p. 2,319-2,339.

Denver, J.M., 1993, Herbicides in shallow ground water at two agricultural sites in Delaware: Newark, Del., Delaware Geological Survey, Report of Investigations No. 51, 28 p.

Denver, J.M., 1991, Groundwater-sampling network to study agrochemical effects on water quality in the unconfined aquifer, Southeastern Delaware, in Nash, R.G. and Leslie, A.R., eds., Groundwater Residue Sampling Design: American Chemical Society Symposium Series, no. 465, Washington, D.C., chap. 7, p. 139-149.

Denver, J.M., 1989, Effects of agricultural practices and septic-system effluent on the quality of water in the unconfined aquifer system in parts of eastern Sussex County, Delaware: Newark, Del., Delaware Geological Survey, Report of Investigations No. 45, 66 p.

Denver, J.M., 1986, Hydrogeology and geochemistry of the unconfined aquifer in west-central and southwestern Delaware: Newark, Del., Delaware Geological Survey, Report of Investigations No. 41, 100 p.

Denver, J.M., Ator, S.W., Debrewer, L.D., Ferrari, M.J., Barbaro, J.R., Hancock, T.C., Brayton, M.J., and Nardi, M.R., 2004, Water Quality in the Delmarva Peninsula, Delaware, Maryland, and Virginia, 1999-2001: U.S. Geological Survey Circular 1228, 31 p.

Denver, J.M., and Sandstrom, M.W., 1991, Distribution of dissolved atrazine and two metabolites in the unconfined aquifer, southeastern, Delaware, in U.S. Geological Survey Toxic Substances Hydrology Program, Proceedings of the Technical Meeting, Monterey, California: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 314-318.

Dunkle, S.A., Plummer, L.N., Busenberg, Eurybiades, Phillips, P.J., Denver, J.M., Hamilton, P.A., Michel, R.L., and Coplen, T.B., 1993, Chlorofluorocarbons (CCl 3F and CCl 2F 2) as dating tools and hydrologic tracers in shallow groundwater of the Delmarva Peninsula, Atlantic Coastal Plain, United States: Water Resources Research, v. 29, no. 12, p. 3,837-3,860.

Ferrari, M.J., 2002, Occurrence and distribution of selected contaminants in public drinking-water supplies in the surficial aquifer in Delaware: U.S. Geological Survey Open-File Report 01-327, 62 p.

Hamilton, P.A., Denver, J.M., Phillips, P.J., and Shedlock, R.J., 1993, Water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia — Effects of agricultural activities on, and distribution of, nitrate and other inorganic constituents in the surficial aquifer: U.S. Geological Survey Open-File Report 93-40, 87 p.

Hamilton, P.A., and Shedlock, R.J., 1992, Are fertilizers and pesticides in the ground water?: U.S. Geological Survey Circular 1080, 16 p.

Hamilton, P.A., and Shedlock, R.J., 1989, Relations between land use and nitrate concentrations in shallow ground water, Delmarva Peninsula: U.S. Geological Survey Yearbook Fiscal Year 1989, p. 38-­41.

Hamilton, P.A., Shedlock, R.J., and Phillips, P.J., 1991, Water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia—Analysis of available ground-water-quality data through 1987: U.S. Geological Survey Water-Supply Paper 2355-B, 65 p.

Hamilton, P.A., Shedlock, R.J., and Phillips, P.J., 1989, Ground-water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia—Analysis of available water quality data through 1987: U.S. Geological Survey Open-File Report 89-34, 71 p.

Hancock, T.C., and Brayton, M.J., 2006, Environmental Setting of the Morgan Creek Basin, Maryland, 2002-04: U.S. Geological Survey Open-File Report 2006-1151, 28 p.

Koterba, M.T., Banks, W.S.L., and Shedlock, R.J., 1993, Pesticides in ground water in the Delmarva Peninsula: Journal of Environmental Quality, v. 22, no. 3, p. 500-518.

Koterba, M.T., and Shedlock, R.J., 1991, Regional and targeted ground-water-quality networks in the Delmarva Peninsula, Delaware, Maryland, and Virginia: American Chemical Society Symposium Series, no. 465, p. 110-138.

Koterba, M.T., Shedlock, R.J., Bachman, L.J., and Phillips, P.J., 1991, Regional and targeted groundwater quality networks in the Delmarva Peninsula, in Nash, R.G., and Leslie, A.R., eds., Groundwater Residue Sampling Design: American Chemical Society Symposium Series, no. 465, Washington, D.C., chap. 6, p. 110-138.

Phillips, P.J., 1990, Regional water-quality investigation and the ecology of a rare plant species on the Delmarva Peninsula: U.S. Geological Survey, WRD Ecology Newsletter, no. 3, p. 1-2.

Phillips, P.J., and Bachman, L.J., 1996, Hydrologic landscapes on the Delmarva Peninsula—Part 1: Drainage basin type and base-flow chemistry: Water Resources Bulletin, v. 32, no. 4, p. 767-778.

Phillips, P.J., Denver, J.M., Shedlock, R.J., and Hamilton, P.A., 1993, Effect of forested wetlands on nitrate concentrations in ground water and surface water on the Delmarva Peninsula: Wetlands, v. 13, no. 2, p. 75-83.

Phillips, P.J., and Shedlock, R.J., 1993, Hydrology and chemistry of groundwater and seasonal ponds in the Atlantic Coastal Plain in Delaware, USA: Journal of Hydrology, v. 141, p. 157-178.

Phillips, P.J., Shedlock, R.J., and Hamilton, P.A., 1992, National Water-Quality Assessment Program activities on the Delmarva Peninsula in parts of Delaware, Maryland, and Virginia, in Gohn, G.S., ed., Proceedings of the 1988 U.S. Geological Survey Workshop on the Geology and Geohydrology of the Atlantic Coastal Plain: U.S. Geological Survey Circular 1059, p. 75-78.

Reilly, T.E., Plummer, L.N., Phillips, P.J., and Busenberg, Eurybiades, 1994, The use of simulation and multiple environmental tracers to quantify flow in a shallow aquifer: Water Resources Research, v. 30, no. 2, p. 421-433.

Shedlock, R.J., 1993, The Delmarva study—Assessing regional ground-water quality: Geotimes, v. 38, no. 12, p. 12-14.

Shedlock, R.J., Denver, J.M., Hayes, M.A., Hamilton, P.A., Koterba, M.T., Bachman, L.J., Phillips, P.J., and Banks, W.S.L., 1999, Water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia—Results of investigations, 1987-91: U.S. Geological Water-Supply Paper 2355-A, 41 p.

Shedlock, R.J., Hamilton, P.A., Denver, J.M., and Phillips, P.J., 1993, Multiscale approach to regional ground-water quality assessment of the Delmarva Peninsula, in Alley, W.M. ed., Regional Ground-Water Quality: New York, Van Nostrand Reinhold, p. 563-587.

Shedlock, R.J., Koterba, M.T., Denver, J.M., and Banks, W.S.L., 1991, Occurrence and distribution of pesticides in the ground-water system of the Delmarva Peninsula, Delaware, Maryland, and Virginia, 1988-1990: Annual Conference Proceedings, 27 th, American Water Resources Association, p. 345-34

Contact Information:

Judy M. Denver, Supervisory Hydrologist: jmdenver@usgs.gov.

U.S. Geological Survey Water Resources Division MD-DE-DC
1289 McD Drive
Dover, DE 19901
Tel: (302) 734-2506
Fax: (302) 734-2964