
PhD,
Assistant Professor,
Water Resources
Department of Civil & Environmental
Engineering,
Michigan Technological University.
Office: 865 DOW
Tel: 906-487-1079
Fax: 906-487-2943
E-mail: vgriffis@mtu.edu
[ Education | Research | Teaching | Publications | Honors/Affiliations ]
Ph.D. Civil Engineering,
Dissertation: Flood Frequency Analysis: Bulletin 17, Regional Information, and Climate Change
Advisor: Jery R. Stedinger, Ph.D.
M.S. Civil Engineering,
Thesis: Evaluation of Log-Pearson Type 3 Flood Frequency Analysis Methods Addressing Regional Skew and Low Outliers
Advisor: Jery R. Stedinger, Ph.D.
B.S. Civil Engineering, Magna cum Laude, University of
My research interests are related to flood frequency analysis and the evaluation of other extreme events. In particular, I am interested in the impacts of climate variability, climate change and land use changes on the magnitude, frequency, and timing of flood flows. The effects of such changes on stream ecology and water quality are also of interest. Other projects I am currently working on involve the use of regional information and regression methods to improve flood quantile estimates at site and for quantile estimation at ungauged sites
Current Research
Incorporating Climate Change and Variability into the
Bulletin 17B LP3 Model
The current techniques for flood frequency analysis presented in Bulletin 17B assume annual maximum
floods are stationary, meaning that the distribution of flood flows is not
significantly affected by climatic trends or long-term cycles (i.e. decadal
variations). Observed trends in
stream flows raise concern as to whether or not this assumption is valid. This project considers how the Bulletin 17B framework might be modified
to account for nonstationarity in flood records due to climate variability. In order to improve estimates/forecasts
obtained using the LP3 model, the effects of climate variability may be
incorporated into updated estimates of the mean, standard deviation, and
perhaps the skew by regressing the LP3 parameters on climatic indices
describing the Pacific Decadal Oscillation and Northern Atlantic
Oscillation. The effects of
climatic cycles occurring over a shorter time frame, such as El Nino-Southern
Oscillation (ENSO) are averaged into estimates made using the procedures of Bulletin 17B. However, the effects of ENSO are likely
to affect the magnitude of annual maximum stream flows, and thus would impact
flood risk in a given year. ENSO effects are incorporated into forecasts by
regressing the LP3 parameters on sea surface temperatures.
Education Related Projects
Collaborative
Technology Innovation for Public Health Improvements in Tanzania
Graduate Student Scholarships to Advance a Global
Outlook of Economic and Social Prosperity that Protects the Environment
Please see the project website for information: http://www.sfi.mtu.edu/S-STEM/
Other Projects
Application of Expected Moments Algorithm (EMA) with Historical Information, Low Outliers, and Regional Skew
Flood Risk Assessment in Haiti
CE 3710: Uncertainty Analysis in Engineering, Fall 2010
CE 3620: Water Resources Engineering, Spring 2010
CE 4620: River & Floodplain Hydraulics, Fall 2009
CE 4990: Probability & Statistics for Civil Engineers, Spring 2009
CE 4620: River & Floodplain Hydraulics, Fall 2008
CE 5620: Stochastic Hydrology, Spring 2008
CE 5690: Descriptive Modeling of Data, Spring 2008
CE 4620: Open Channel Flow, Fall 2007
CE 5690: Stochastic Hydrology, Spring 2007
CE 5666: Water Resources Planning and Management, Fall 2006
Instruction at
Achievements/Awards/Honors
2006, inducted into Sigma Xi Honor Society
2004, 2005, & 2006,
awarded John E. Perry Teaching Assistant Prize at
2003 National Science Foundation Honorable Mention
2000, inducted into Tau Beta Pi National Engineering Honor Society
2000, inducted into Chi Epsilon National Civil Engineering Honor Society
2000, inducted into Golden Key National Honor Society
2001, received
Edward H. Phelps Senior Civil Engineering Award at the
2000, received
Junior Civil Engineering Award at the
1999, received
Reginald Milbank Sophomore Award at the
1999, received Tau Beta Pi Sophomore Award
1998, inducted into Phi Eta Sigma National Honor Society
1997-2001, awarded Green
Mountain Power Four-Year Scholarship to attend the
1997-2001,
Professional Affiliations
Hydrologic Frequency Analysis Work Group (HFAWG), a subcommittee of the Advisory Committee of Water Information of the U.S. Geological Survey
American Geophysical Union (AGU)
American Society of Civil Engineers (ASCE); Environmental and Water Resources Institute (EWRI)
Association
of Environmental Engineering Scientists and Professors (AEESP)
___________________________________________________________________
Last updated on November 9, 2009
<<>>