Source: https://www.usgs.gov/staff-profiles/jeff-p-raffensperger
Timestamp: 2019-04-25 20:01:21+00:00

Document:
Jeff Raffensperger has worked for the USGS MD-DE-DC Water Science Center since 1999. Over that time, he has led or collaborated on studies of hydrologic processes, water quality, and modeling. He has been a member of the National Water-Quality Assessment (NAWQA) Integrated Watershed Studies (IWS) Team since 2013, and the Water Science Center Groundwater Specialist since 2006.
Member, National Water Budget Team, Investigating Water Quality and Sources of Streamflow, 2017-present. Applying published method for base-flow estimation using a digital filter constrained by chemical mass balance to the CONUS in support of NHM-PRMS.
Member, NAWQA Integrated Watershed Studies (IWS) Team, 2013-present. Developed and published a method for base-flow estimation using a digital filter constrained by chemical mass balance.
Acting Project chief, MD-DE-DC Groundwater Network, 2016-2017. Managed resources, staff schedules, data collection, processing, quality assurance, and publication for network of over 480 wells.
Developed or modified groundwater-flow models for Assateague Island National Seashore, the Anacostia River watershed, and a part of central Maryland impacted by Base Realignment and Closure (BRAC).
Contributed to groundwater-quality studies at the Standard Chlorine of Delaware, Inc. Superfund Site.
Project scientist, Comprehensive Assessment of Water Supply in Maryland project; focused on quantifying groundwater availability using models and age dating.
Responsible for overall quality of groundwater science and data for the MD-DE-DC Water Science Center.
Leader, Data Quality Management Team, 2014-2017. Worked closely with database administrators to develop and implement data-quality assurance processes.
Project chief, Chesapeake Bay River Input Monitoring project, 2005-07. Managed project resources and data collection at four major river water-quality sites. Developed new methods for analyzing and communicating results of load and trend estimation (using ESTIMATOR) to Cooperators, the Chesapeake Bay Program (CBP), and the public.
Collaborated in improving parametric and nonparametric statistical methods used for water-quality status and trends in nontidal rivers in Chesapeake Bay Watershed.
Lead author, unpublished report on factors affecting water quality in the Chesapeake Bay Watershed.
Worked closely with CBP scientists in calibrating the Phase 5 HSPF model.
2000-present: LECTURER, The Johns Hopkins University, Engineering for Professionals, Baltimore, MD.
Supervisory responsibility for the Watershed Studies Section.
Wrote work plan and managed the DE Inland Bays HSPF model project. Co-authored Delaware Inland Bays HSPF model report.
Developed new studies and wrote work plans for the Potomac TMDL water-quality data-collection project, the follow-up Mattawoman Creek water-quality project, and the Anacostia River water-quality monitoring project.
Taught undergraduate and graduate-level courses in hydrology, groundwater geology, and numerical methods.
Advised and co-advised graduate students pursuing MS. And Ph.D. degrees.
Authored textbook, Elements of Physical Hydrology (now in its 2nd edition).
Obtained over $1M in grant funding for research, from the National Science Foundation (including a CAREER Award: EAR/Hydrologic Sciences, 1996), the University of Virginia, the USGS/NPS partnership, the Virginia Water Resources Research Center, the American Chemical Society/Petroleum Research Fund, and others.
Developed and published the software package RST2D (Reactive Solute Transport in 2 Dimensions), a family of codes providing an environment for numerical simulation of processes occurring in sedimentary basins: steady or transient saturated groundwater flow, based on either a hydraulic head or stream function approach; steady or transient heat transport, which may be coupled with groundwater flow for variable-density problems; and conservative or reactive multicomponent mass transport (assuming local geochemical equilibrium). Codes have been used as the basis for computations in at least 30 peer-reviewed publications (complete list available on request).
Deterministic modeling and numerical methods for solution of differential and partial differential equations.
Statistical modeling using parametric and nonparametric methods. Expertise with MATLAB Statistics Toolbox and familiarity with R.
Database management. Expertise with Microsoft Excel, familiarity with MATLAB Database Toolbox, ODBC-connected databases and the SQL query language.
Geographic information Systems. Experience with ESRI ArcGIS family of desktop software.
Programming. Expertise with MATLAB, Fortran, and shell scripting; familiarity with Python. Experience with programming for parallel computing environments. Extensive experience with Windows, Macintosh, and UNIX operating systems.
Design and implementation of research programs to meet multiple objectives.
Project Management. Over 25 years of experience managing project development and implementation, managing human and capital resources. Experience with project management software such as Omniplan.
Plummer, Niel; Eggleston, John R.; Raffensperger, Jeff P.; Hunt, Andrew G.; Casile, Gerolamo C.; Andreasen, D.C.
Old groundwater in parts of the upper Patapsco aquifer,Atlantic Coastal Plain, Maryland, USA: Evidence fromradiocarbon, chlorine-36 and helium-4; 2012; Article; Journal; Hydrogeology; Plummer, Niel; Eggleston, John R.; Raffensperger, Jeff; Hunt, Andrew G.; Casile, Gerolamo C.; Andreasen, D.C.
Phillips, Scott W.; Ator, Scott W.; Blazer, Vicki S.; Brakebill, John W.; Cahoon, Donald R.; Claggett, Peter; Cronin, Thomas M.; Denver, Judith M.; Densmore, Christine L.; Gellis, Allen C.; Hupp, Cliff R.; Landwehr, Jurate M.; Langland, Michael J.; Ottinger, Christopher A.; Pavich, Milan J.; Perry, Matthew C. ; Phillips, Scott W.; Preston, Stephen D.; Raffensperger, Jeff P.; Rattner, Barnett A.; Rybicki, Nancy B.; Willard, Debra A.
Phillips, S.W., ed., 2007, Synthesis of U.S. Geological Survey science for the Chesapeake Bay ecosystem and implications for environmental management: U.S. Geological Survey Circular 1316, 63 p.
Soeder, Daniel J.; Raffensperger, Jeff P.; Nardi, Mark R.
Effects of Withdrawals on Ground-Water Levels in Southern Maryland and the Adjacent Eastern Shore, 1980-2005; 2007; SIR; 2007-5249; Soeder, Daniel J.; Raffensperger, Jeff P.; Nardi, Mark R.
Martucci, Sarah K.; Krstolic, Jennifer L.; Raffensperger, Jeff P.; Hopkins, Katherine J.
Development of Land Segmentation, Stream-Reach Network, and Watersheds in Support of Hydrological Simulation Program-Fortran (HSPF) Modeling, Chesapeake Bay Watershed, and Adjacent Parts of Maryland, Delaware, and Virginia; 2006; SIR; 2005-5073; Martucci, Sarah K.; Krstolic, Jennifer L.; Raffensperger, Jeff P.; Hopkins, Katherine J.
Langland, Michael J.; Raffensperger, Jeff P.; Moyer, Douglas; Landwehr, Jurate M.; Schwarz, Gregory E.
Changes in Streamflow and Water Quality in Selected Nontidal Basins in the Chesapeake Bay Watershed, 1985-2004; 2006; SIR; 2006-5178; Langland, Michael J.; Raffensperger, Jeff P.; Moyer, Douglas L.; Landwehr, Jurate M.; Schwarz, Gregory E.
Dillow, Jonathan J.A.; Raffensperger, Jeff P.
Wu, J.; Shenk, G.W.; Raffensperger, Jeff P.; Moyer, D.; Linker, L.C.
Sediment calibration strategies of Phase 5 Chesapeake Bay watershed model; 2005; Conference Paper; Proceedings of the 2005 Watershed Management Conference - Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges; Wu, J.; Shenk, G. W.; Raffensperger, J.; Moyer, D.; Linker, L. C.
Changes in streamflow and water quality in selected nontidal sites in the Chesapeake Bay Basin, 1985-2003; 2004; SIR; 2004-5259; Langland, Michael J.; Phillips, Scott W.; Raffensperger, Jeff P.; Moyer, Douglas L.
Raffensperger, J.P., Baker, A.C., Blomquist, J.D., and Hopple, J.A., 2017, Hydrograph-separation results for 225 streams in the Chesapeake Bay Watershed derived by using PART, HYSEP (Fixed, Local minimum, Slide), BFI, and a Recursive Digital Filter with streamflow data ranging from 1913 through 2016: U.S. Geological Survey Data Release, https://doi.org/10.5066/F757194G.
Raffensperger, J.P., 1997, Evidence and modeling of large-scale groundwater convection in Precambrian sedimentary basins, in Montañez, I.P., Gregg, J.M., and Shelton, K.L., eds., Basin-wide Diagenetic Patterns: Integrated Petrologic, Geochemical, and Hydrologic Considerations: Tulsa, OK, SEPM, No. 57, p. 15-26, http://archives.datapages.com/data/sepm_sp/SP57/Evidence_and_Modeling_of_Large-Scale.htm.
Garven, G., and Raffensperger, J.P., 1997, Hydrogeology and geochemistry of ore genesis in sedimentary basins, in Barnes, H.L., ed., Geochemistry of Hydrothermal Ore Deposits (3rd ed.): New York, John Wiley & Sons, Inc., p. 125-189.
Person, M., Raffensperger, J.P., Ge, S., and Garven, G., 1996, Basin-scale hydrogeologic modeling: Reviews of Geophysics, v. 34, no. 1, p. 61-87, https://dx.doi.org/10.1029/95RG03286.
Raffensperger, J.P., 1996, Numerical simulation of sedimentary basin-scale hydrochemical processes, in Corapcioglu, M.Y., ed., Advances in Porous Media: Amsterdam, Elsevier, Volume 3, p. 185-305.
Raffensperger, J.P., 1996, Earth's hydrosphere, in Dasch, E.J., ed., Encyclopedia of Earth Sciences: New York, Simon & Schuster Macmillan, Volume 1, p. 243-246.
Garven, G., and Raffensperger, J.P., 1996, Two-dimensional reactive-flow modeling of uranium transport in Proterozoic sedimentary basins, in 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: U. S. Geological Survey Water-Resources Investigations Report 95-4015, p. 196-200, https://pubs.er.usgs.gov/publication/wri954015.
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, v. 295, no. 5, p. 581-636, http://www.ajsonline.org/content/295/5/581.full.pdf+html.
Raffensperger, J.P., and Garven, G., 1995, The formation of unconformity-type uranium ore deposits 2. Coupled hydrochemical modeling: American Journal of Science, v. 295, no. 6, p. 639-696, http://www.ajsonline.org/content/295/6/639.full.pdf+html.
Evans, D.G., and Raffensperger, J.P., 1992, On the stream function for variable-density groundwater flow: Water Resources Research, v. 28, no. 8, p. 2141-2145, https://dx.doi.org/10.1029/92WR01060.
Raffensperger, J.P., and Ferrell, R.E., 1991, An empirical model of intrinsic permeability in reactive clay-bearing sands: Water Resources Research, v. 27, no. 11, p. 2835-2844, https://dx.doi.org/10.1029/91WR01570.
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: Sciences Géologiques, Mémoires, v. 87, p. 75-83.

References: v. 
 v. 
 v. 
 v. 
 v. 
 v.