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Jeff Raffensperger, Groundwater Specialist

Photo of Jeff Raffensperger

Contact Information

U.S. Geological Survey
5522 Research Park Drive
Baltimore, Maryland 21228

Phone: (443) 498-5542
Fax: (443) 498-5510


Email: jpraffen@usgs.gov

Education

Ph.D.
Ph.D. in Hydrogeology, Johns Hopkins University, 1993.
M.A.
M.A. in Hydrogeology, Johns Hopkins University, 1990.
M.S.
M.S. in Geology, Louisiana State University, 1988.
B.S.
B.S. Cum Laude in Geology, University of Maryland, College Park, 1985.

Professional Experience

2006–Present GROUNDWATER SPECIALIST, U.S. Geological Survey, MD-DE-DC Water Science Center, Baltimore, MD

2005–09 RESEARCH HYDROLOGIST, U.S. Geological Survey, MD-DE-DC Water Science Center, Baltimore, MD

2004–05 HYDROLOGIST, U.S. Geological Survey, Water Resources Discipline, MD-DE-DC District, Baltimore, MD

2000–Present LECTURER, The Johns Hopkins University, Engineering for Professionals, Baltimore, MD

1999–2004 SUPERVISORY HYDROLOGIST, U.S. Geological Survey, Water Resources Division, MD-DE-DC District, Baltimore, MD

1993–99 ASSISTANT PROFESSOR, Department of Environmental Sciences, University of Virginia, Charlottesville, VA

Associations and Memberships

Research / Professional Focus / Current Projects

Modeling of hydrologic systems, especially groundwater systems. Application of groundwater simulation models (MODFLOW, SUTRA) to regional flow problems. Application of watershed simulation models (HSPF, TOPMODEL) to predict rainfall-runoff relationships and their influence on chemical transport in watersheds. Monitoring water quality in streams and rivers and use of statistical methods to estimate constituent loads and trends.

Selected Publications

Plummer, L.N., Eggleston, J.R., Andreasen, D.C., Raffensperger, J.P., Hunt, A.G., and Casile, G.C., 2012, Old groundwater in parts of the upper Patapsco aquifer, Atlantic Coastal Plain, Maryland, USA: evidence from radiocarbon, chlorine-36 and helium-4: Hydrogeology Journal, p. 1-26.

Raffensperger, J.P., Fleming, B.J., Banks, W.S.L., Horn, M.A., Nardi, M.R., and Andreasen, D.C., 2010, Simulation of groundwater flow to assess future withdrawals associated with Base Realignment and Closure (BRAC) at Fort George G. Meade, Maryland: U.S. Geological Survey Scientific Investigations Report 2010-5186, 48 p.

Soeder, D.J., Raffensperger, J.P., and Nardi, M.R., 2007, Effects of withdrawals on ground-water levels in southern Maryland and the adjacent Eastern Shore, 1980-2005: U.S. Geological Survey Scientific Investigations Report 2007-5249, 83 p.

Dillow, J.J.A., and Raffensperger, J.P., 2006, Estimates of the loads of nitrite + nitrate in the flow of Bassett Creek to the Maryland Coastal Bays adjacent to Assateague Island National Seashore, water years 2003–2004: U.S. Geological Survey Scientific Investigations Report 2006-5080, 10 p.

Langland, M.J., Raffensperger, J.P., Moyer, D.L., Landwehr, J.M., and Schwarz, G.E., 2006, Changes in streamflow and water quality in selected nontidal basins in the Chesapeake Bay watershed, 1985-2004: U. S. Geological Survey Scientific Investigations Report 2006-5178, 75 p.

Martucci, S.K., Kristolic, J.L., Raffensperger, J.P., and Hopkins, K., 2006, Development of land segmentation, stream-reach network, and watersheds in support of HSPF modeling, Chesapeake Bay watershed and adjacent parts of Maryland, Delaware, and Virginia: U. S. Geological Survey Scientific Investigations Report 2005-5073, 15 p.

Swenson, J.B., Person, M., Raffensperger, J.P., Cannon, W.F., Woodruff, L.G., and Berndt, M.E., 2004, A hydrogeologic model of stratiform copper mineralization in the Midcontinent Rift System, Northern Michigan, USA: Geofluids, v. 4, no. 1, p. 1-22.

Langland, M.J., Phillips, S.W., Raffensperger, J.P., and Moyer, D.L., 2004, Changes in streamflow and water quality in selected nontidal sites in the Chesapeake Bay Basin, 1985-2003: U. S. Geological Survey Scientific Investigations Report 2004-5259, 50 p.

Gutiérrez-Magness, A., and Raffensperger, J.P., 2003, Development, calibration, and analysis of a hydrologic and water-quality model of the Delaware Inland Bays Watershed: U.S. Geological Survey Water-Resources Investigations Report 03-4124, 42 p.

Garven, G., Raffensperger, J. P., Dumoulin, J. A., Bradley, D. A., Young, L. E., Kelley, K. D., and Leach, D. L. 2003. Coupled heat and fluid flow modeling of the Carboniferous Kuna Basin, Alaska: implications for the genesis of the Red Dog Pb–Zn–Ag–Ba ore district. Journal of Geochemical Exploration, 4058, 1–5.

Wetzel, L. R., Raffensperger, J. P., and Shock, E. L. 2001. Predictions of hydrothermal alteration within near-ridge oceanic crust from coordinated geochemical and fluid flow models. Journal of Volcanology and Geothermal Research, 110, 319-342.

Hornberger, G. M., Scanlon, T. M., and Raffensperger, J. P. 2001. Modelling transport of dissolved silica in a forested headwater catchment: the effect of hydrological and chemical time scales on hysteresis in the concentration-discharge relationship. Hydrological Processes, 15, 2029-2038.

Scanlon, T. M., Raffensperger, J. P., and Hornberger, G. M. 2001. Modeling transport of dissolved silica in a forested headwater catchment: implications for defining the hydrochemical response of observed flow pathways. Water Resources Research, 37(4), 1071-1082.

Scanlon, T. M., Raffensperger, J. P., Hornberger, G. M., and Clapp, R. B. 2000. Shallow subsurface stormflow in a forested headwater catchment: observations and modeling using a modified TOPMODEL. Water Resources Research, 36(9), 2575-2586.

Raffensperger, J. P., and Vlassopoulos, D. 1999. The potential for free and mixed convection in sedimentary basins. Hydrogeology Journal, 7(6), 505-520.

Hornberger, G. M., Raffensperger, J. P., Wiberg, P. L., and Eshleman, K. N. 1998. Elements of Physical Hydrology. The Johns Hopkins University Press, Baltimore, 302 pp.

Raffensperger, J. P. 1997. Evidence and modeling of large-scale groundwater convection in Precambrian sedimentary basins. In Basin-wide Diagenetic Patterns: Integrated Petrologic, Geochemical, and Hydrologic Considerations. Montañez, I. P., Gregg, J. M., and Shelton, K. L., Editors. SEPM Special Publication No. 57. SEPM, Tulsa, OK, 15-26.

Garven, G. and Raffensperger, J. P. 1997. Hydrogeology and geochemistry of ore genesis in sedimentary basins. Chapter 4 in Geochemistry of Hydrothermal Ore Deposits. 3rd ed. Barnes, H. L., Editor. John Wiley & Sons, New York, NY, 125-189.

Person, M., Raffensperger, J. P., Ge, S., and Garven, G. 1996. Basin-scale hydrogeologic modeling. Reviews of Geophysics, 34(1), 61-87.

Raffensperger, J. P. 1996. Numerical simulation of sedimentary basin-scale hydrochemical processes. In Advances in Porous Media. Corapcioglu, M. Y., Editor. Volume 3. Elsevier, Amsterdam, 185-305.

Raffensperger, J. P. 1996. Earth's hydrosphere. In Encyclopedia of Earth Sciences. Dasch, E. J., Editor. Volume 1. Simon & Schuster Macmillan, New York, 243-246.

Garven, G. and Raffensperger, J. P. 1996. Two-dimensional reactive-flow modeling of uranium transport in Proterozoic sedimentary basins. Joint U.S. Geological Survey, U.S. Nuclear Regulatory Commission Workshop on Research Related to Low-level Radioactive Waste Disposal, National Center, Reston, Virginia, May 4–6, 1993. Stevens, P. R. and Nicholson, T. J., Editors. U. S. Geological Survey Water Resources-Investigations 95-4015, 196-200.

Raffensperger, J. P. and Garven, G. 1995. The formation of unconformity-type uranium ore deposits 1. Coupled groundwater flow and heat transport modeling. American Journal of Science, 295, 581-636.

Raffensperger, J. P. and Garven, G. 1995. The formation of unconformity-type uranium ore deposits 2. Coupled hydrochemical modeling. American Journal of Science, 295, 639-696.

Evans, D. G. and Raffensperger, J. P. 1992. On the stream function for variable-density groundwater flow. Water Resources Research, 28(8), 2141-2145.

Raffensperger, J. P. and Ferrell, R. E., Jr. 1991. An empirical model of intrinsic permeability in reactive clay-bearing sands. Water Resources Research, 27(11), 2835-2844.

Raffensperger, J. P. and Ferrell, R. E., Jr. 1990. Permeant-induced changes in the permeability, microtexture, and pore structure of unconsolidated water-sensitive sediments. Proceedings of the 9th International Clay Conference, Strasbourg, 1989, Farmer, V. C. and Tardy, Y., Editors. Sciences Géologiques, Mémoires, 87, 75-83.

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