Jeff P Raffensperger, Ph.D.
Dr. Jeff Raffensperger is a hydrologist in the MD-DE-DC Water Science Center. He has led or collaborated on studies of hydrologic processes, water quality, and modeling. He has been a member of several National Teams working to improve estimation of water budgets, with a research focus on groundwater discharge and base flow to streams and rivers.
Professional Experience
2009-present: HYDROLOGIST, USGS MD-DE-DC WSC
Member, National Water-Quality Assessment (NAWQA) Team, National Water Budget Estimation and Evaluation (WBEEP) Team, and the Water Budget Baseline (WBB) Team, investigating sources of streamflow.
2006-2023: GROUNDWATER SPECIALIST, USGS MD-DE-DC WSC
Responsible for overall quality of groundwater science and data for the MD-DE-DC Water Science Center.
Leader, Data Quality Management Team, 2014-2017. Member, 2017-present. Worked closely with database administrators to develop and implement data-quality assurance processes.2004-09: HYDROLOGIST/RESEARCH HYDROLOGIST, USGS MD-DE-DC WSC
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.
1999-2004: SUPERVISORY HYDROLOGIST, USGS MD-DE-DC WSC
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, Mattawoman Creek, and Anacostia River water-quality projects.
2009-2022: LECTURER, The Johns Hopkins University, Engineering for Professionals, Baltimore, MD.
Education and Certifications
Ph.D. in Hydrogeology, 1993, The Johns Hopkins University, Baltimore, MD
M.A. in Hydrogeology, 1990, The Johns Hopkins University, Baltimore, MD
M.S. in Geology, 1988, Louisiana State University, Baton Rouge, LA
B.S. in Geology (Cum Laude), 1985, University of Maryland, College Park, MD
Science and Products
Effects of Withdrawals on Ground-Water Levels in Southern Maryland and the Adjacent Eastern Shore, 1980-2005
Changes in streamflow and water quality in selected nontidal basins in the Chesapeake Bay Watershed, 1985-2004
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
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
Sediment calibration strategies of Phase 5 Chesapeake Bay watershed model
Changes in streamflow and water quality in selected nontidal sites in the Chesapeake Bay Basin, 1985-2003
A hydrogeologic model of stratiform copper mineralization in the Midcontinent Rift System, Northern Michigan, USA
Development, calibration, and analysis of a hydrologic and water-quality model of the Delaware Inland Bays watershed
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
Predictions of hydrothermal alteration within near-ridge oceanic crust from coordinated geochemical and fluid flow models
Shallow subsurface storm flow in a forested headwater catchment: Observations and modeling using a modified TOPMODEL
The potential for free and mixed convection in sedimentary basins
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Effects of Withdrawals on Ground-Water Levels in Southern Maryland and the Adjacent Eastern Shore, 1980-2005
Changes in streamflow and water quality in selected nontidal basins in the Chesapeake Bay Watershed, 1985-2004
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
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
Sediment calibration strategies of Phase 5 Chesapeake Bay watershed model
Changes in streamflow and water quality in selected nontidal sites in the Chesapeake Bay Basin, 1985-2003
A hydrogeologic model of stratiform copper mineralization in the Midcontinent Rift System, Northern Michigan, USA
Development, calibration, and analysis of a hydrologic and water-quality model of the Delaware Inland Bays watershed
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
Predictions of hydrothermal alteration within near-ridge oceanic crust from coordinated geochemical and fluid flow models
Shallow subsurface storm flow in a forested headwater catchment: Observations and modeling using a modified TOPMODEL
The potential for free and mixed convection in sedimentary basins
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.