Judy Denver


Recent Accomplishments


  • M.S. in Marine Studies, University of Delaware, College of Marine Studies
  • B.S. in Geology, University of Delaware

Professional Studies/Experience

  • Regional syntheses of shallow groundwater quality in the Northern Atlantic Coastal Plain as part of the USGS National Water-Quality Assessment Program and sub-regions of the Chesapeake Bay watershed through USGS Chesapeake Bay studies
  • Local-scale studies of changes in groundwater chemistry related to recent changes in agricultural conservation practices
  • The effects of wetlands on nitrate transport through shallow groundwater in agricultural areas with state and federal partners.
  • 1997-present: Project Chief, National Water-Quality Assessment Program (NAWQA), Delmarva Peninsula and Potomac River Basin and Delmarva Peninsula Study Units, and regional synthesis of groundwater quality data in the Mid-Atlantic Coastal Plain, New Jersey through North Carolina
  • 1996-1997: Chief, Delaware Office of the Maryland-Delaware-DC District
  • 1980-1997: Project Chief in the Delaware office working on numerous cooperative and federal projects related to the transport and transformation of anthropogenic chemicals in unconfined Coastal Plain aquifer systems. Work included investigation of the effects of agricultural chemicals and septic-system effluent on groundwater chemistry, the water-quality function of wetlands, transport and transformation of nutrients in aquifer and near-stream environments, the effects of geologic setting on water chemistry and chemical transport, and the transport and transformations of pesticides in groundwater


Professional societies/affiliations/committees/editorial boards

  • American Geophysical Union
  • Delaware Chapter of the American Water Resources Association
  • Geological Society of America
  • Society of Wetland Scientists

Research interests include the following:

  • Study of the geochemistry of shallow Coastal Plain groundwater systems affected by agricultural, urban, and forested land uses
  • Transport and transformation of agricultural chemicals from groundwater to surface water and the effects of wetlands on water chemistry
  • Effects of different geologic settings on the geochemistry of ground and surface waters
  • Identification of the chemical characteristics particular to different sources of chemicals in natural and human-impacted waters

Honors, awards, recognition, elected offices

Scientific/Oral Presentations, Abstracts

Selected Bibliography

Denver, J.M., Tesoriero, A.J., and Barbaro, J.R., 2010. Trends and Transformation of Nutrients and Pesticides in a Coastal Plain Aquifer System, Journal of Environmental Quality 39:154-167.

Debrewer, L.M., Ator, S.W., and Denver, J.M., 2008. Temporal trends in nitrate and selected pesticides in Mid-Atlantic ground water: Journal of Environmental Quality, 37:S-296-S-308.

Ator, S.W., Denver, J.M., Krantz, D.E., Newell, W.L., and Martucci, S.K., 2005. A surficial hydrogeologic framework for the Mid-Atlantic Coastal Plain: U.S. Geological Survey Professional Paper 1680, 44 p.

Ator, S.W., Denver, J.M., Brayton, M.J., 2005. 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, 34 p.

Denver, J.M., Ator, S.W., Debrewer, L.M., 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, 30 p.