National Water-Quality Assessment (NAWQA) Project

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NAWQA Publications: by Location - DE (back to categories)


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Denis, Janet M., and Blomquist, Joel D., 1995, Nitrate in streams in the Great Valley carbonate subunit of the Potomac River Basin: U.S. Geological Survey Fact Sheet 161-95, 4 p.  Available Online

Fisher, Gary T., 1995, Selected herbicides in major streams in the Potomac River Basin upstream from Washington, D.C.: U.S. Geological Survey Fact Sheet 107-95, 4 p.  Available Online

Dunkle, S.A., Plummer, L.N., Busenberg, E., Phillips, P.J., Denver, J.M., Hamilton, P.A., Michel, R.L., and Coplen, T.B., 1993, Chlorofluoro-carbons (CC13F and CC12F2) as dating tools and hydrologic tracers in shallow groundwater of the Delmarva Peninsula, Atlantic Coastal Plain, United States: Water Resources Research, vol. 29, no. 12, p. 3837-3860.  Available Online

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.  Available Online

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

Phillips, P.J., and Shedlock, R.J., 1993, Hydrology and chemistry of ground water and seasonal ponds in the Atlantic Coastal Plain in Delaware, USA: Journal of Hydrology, vol. 141, p. 157-178.  doi: 10.1016/0022-1694(93)90048-EĀ Available Online

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.  Available Online

Shedlock, R.J., 1993, The Delmarva study: Geotimes, December 1993 vol. 38, no. 12, p. 12-14. 

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. 

Bachman, L.J., Zynjuk, L.D., and Phillips, P.J., 1992, The significance of hydrologic landscapes in estimating nitrogen loads in base flow to estuarine tributaries of Chesapeake Bay: EOS, Transactions, American Geophysical Union, vol. 73, no. 14, Spring Meeting Supplement, p. 113. 

Hamilton, P.A., and Shedlock, R.J., 1992, Are fertilizers and pesticides in the ground water--A case study of the Delmarva Peninsula, Delaware, Maryland, and Virginia: U.S. Geological Survey Circular 1080, 16 p.  Available Online

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.  Available Online

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

Hamilton, P.A., Shedlock, R.J., and Phillips, P.J., 1991, 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.  Available Online

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 465, p. 110-138. 

Koterba, M.T., Shedlock, R.J., Bachman, L.J., and Phillips, P.J., 1990, Regional and targeted groundwater quality networks in the Delmarva Peninsula, in groundwater residue sampling design: American Chemical Society, Chapter 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. 

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. 

Alley, W.M., and Wilber, W.G., 1988, National Water-Quality Assessment Program: 1988 U.S. Geological Survey Year Book, p. 37-39. 

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.  Available Online

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