- NSF  Hierarchical  Patch Dynamics Project			- GREAT LAKES Integrated  Management Project
- NSF Inverse  Multi-scale  Modeling Project			- MDEQ Michigan Groundwater  Modeling System
- NSF Stoch Ground Water Modeling Project			- MDEQ Probabilistic Wellhead Protection Project
- NSF Interactive Groundwater IGW project			- MDEQ Mich Schoolcraft  Bioremediation Project
- NSF Groundwater  Digital  Library Project			- USEPA 3D Contamination  Visualization Project

Dr. Li and his research team are investigating better ways to analyze and model flow and contaminant transport in complex groundwater systems. Dr. Li is particularly interested in the effects of heterogeneity, scale interactions, uncertainty propagation, interactions with surface water, and integrated tools that can adapt to complex field conditions across multiple spatial and temporal scales. Dr. Li's research has been funded by the National Science Foundation, Michigan Department of Environmental Quality, Great Lake Protection Fund, Environmental Protection Agency, and United States Geological Survey. Dr. Li serves on the Editorial Board of the Journal of Stochastic Environmental Research and Risk Assessment (SERRA) and is an Associate Editor for the ASCE Journal of Hydrologic Engineering and for the NGWA Journal of Ground Water. He is a Fellow of the American Society of Civil Engineers (ASCE), a Fellow of the Geological Society of America (GSA), and the winner of the 2002 Premier Award for his innovative Interactive Groundwater software.

Refereed Publications

1. Li, S.G. and Q. Liu. A New Paradigm for Groundwater Modeling. Invited book chapter,  accepted for publication.

2. Li, S.G., Q. Liu, A. Simard, R. Mandle. A New Source of Data for Mapping Complex Groundwater Level Distribution. Submitted for Publication. 

3. Afshari, S., R. Mandle, Q. Liu, and S. G. Li: "A Hierarchical Patch Dynamic Approach for Predicting Drawdown At the Radius of a Pumping Well for Large Complex Groundwater Systems". In review (Download PDF, 0.3MB) 

4. Ni, C.F. and S.G. Li, "Modeling Groundwater Velocity Uncertainty in Complex Composite Media". Advances in Water Resources. Vol. 29, Issue 12, 1866-1875. December, 2006. Download PDF

5. Li, S.G. and Q. Liu, "A Real-time, Computational Steering Environment for Integrated Groundwater Modeling". Journal of Ground Water.  44(5), 758-763. September-October 2006.  Download PDF

6. C. Zheng, T. Pint, and S.G. Li, MODTECH: GIS enabled groundwater modeling (software review). Journal of Ground Water, July-August, 2006.

7. Li, S.G., Q. Liu, and S. Afshari, "An Object-Oriented Hierarchical Patch Dynamics Paradigm (HPDP) for Groundwater Modeling". Environmental Modeling and Software. Volume 21, Issue 5, Pages 601-758. May 2006. Download PDF

8. Sun, Y.H., Y.C. Zhou, S.G. Li, G.W. Wei, "A Windowed Fourier Pseudospectral Method for Hyperbolic Conservation Laws", Journal of Computational Physics. Volume 214, Issue 2. Pages 466-490. 20 May 2006. Download PDF

9. Li, S.G. and Q. Liu, Software News - "Interactive Ground Water (IGW)", Environmental Modeling and Software. Vol. 21, No. 3. 2006. Download PDF

10. Ni, C.F. and S.G. Li, "Simple Closed-Form Formulas for Predicting Groundwater Flow Model Uncertainty in Complex, Heterogeneous Trending Media". Water Resources and Research,  Volume 41, Issue No. 11, November, 2005. Download PDF.

11. T. Lowry and S.G. Li, "A Finite Analytic Method for Solving the 2-D Time-dependent Advection–diffusion Equation with Time-invariant coefficients". Advances in Water Resources, Vol 28, Issue 2, February, 2005. Ranked 11th in The ScienceDirect Top25 Hottest Articles in Advances in Water Resources.  Download PDF

12. Li, S.G., H. S. Liao, Ni, Chuen-Fa, A computationally practical approach for modeling complex mean flows in mildly heterogeneous media, Water Resour. Res., Vol. 40, No. 12, 2004. Download PDF

13. Li, S.G., H. S. Liao and C.F. Ni, Stochastic Modeling of Complex Nonstationary Groundwater Systems, Advances in Water Resources. 27(11), pp 1087-1104, 18 pages, 2004. Download PDF

14. Liao, H.S., L.X. Li, S.G. Li, Recent Advances in Stochastic Groundwater Modeling, Journal of Hydraulic Engineering (in Chinese), 2004, No.4, pp1-10.

15. Li, S.G., McLaughlin D., Liao HS. The Accuracy of Stochastic Perturbation Solutions to Subsurface Transport Problems, ADVANCES IN WATER RESOURCES, 27(1): 47-56, 10 pages, JAN 2004. Download PDF

16. Li, S.G., Q. Liu, Interactive Ground Water (IGW): An Innovative Digital Laboratory For Groundwater Education and Research, COMPUTER APPLICATIONS IN ENGINEERING EDUCATION. Vol. 11(4):179~202, 2003. Download PDF

17. Li, S.G., McLaughlin D., Liao HS. A computationally practical method for stochastic groundwater modeling. ADVANCES IN WATER RESOURCES, 26(11): 1137-1148, 12 pages, NOV 2003. Download PDF

18. T. Lowry and S.G. Li, "A Characteristic-Based Finite-Analytic Method for Solving the Two-Dimensional Steady-State Advection-Diffusion Equation". WATER RESOURCE RES., 38 (7): 1123-1137. 15 pages. JUL 2002, Download PDF

19. Li, S.G., and D.B. McLaughlin, "Asymptotic Properties of the Eulerian Truncation Approximation: Analysis of the Perfectly Stratified Transport Problem". Water Resources Research, 38(8), 1143-1149, 7 pages, AUG 2002. Download PDF  

20. Liao, H S, Li S G. Theoretical and Numerical Assessment of the Validity of Eulerian Truncation in Stochastic Groundwater Modeling. Journal of Hydrodynamics, Series B, 2002,14(3):13-20. (In Chinese).

21. Li, S.G., Book Review on "Dispersion in Heterogeneous Geological Formations”, Edited by Brian Berkowitz, Kluwer Academic Publisher, EOS, Vol. 82, No. 48, page 588, Nov 2001, AGU. Download PDF

22. Li, S.G., and H.S. Liao, "Stochastic Groundwater Modeling: Current Status, Computational Challenges, and An Efficient Modeling Framework", Proceedings of 1999 International Water Resources Engineering Conference, 8/7/99-8/11/99, Seattle, USA.

23. Li, S.G., and Q.S. Huang, "Interactive and Real Time Groundwater Modeling: An Innovative Software Tool for Active Student Learning and Exploration", Proceedings of 1999 International Water Resources Engineering Conference, 8/7/99-8/11/99, Seattle, USA.

24. T. Lowry and S.G. Li, "An Improved Finite-Analytic Method for Two-Dimensional Unsteady Transport and Application to East Multnomah County Groundwater Contamination Site", Proceedings of 1999 International Water Resources Engineering Conference, August 7-11, 1999, Seattle, USA.

25. Ruan, F, McLaughlin, D., and S.G. Li, A General Technique for Assessing the Numerical Accuracy of Solute Transport Models, Water Resources Research, 35(12), 1999. Download PDF

26. Li, S.G., and C.F. Wei, "Improved Finite Analytic Methods for Heterogeneous Transport In Multi-Dimensions", Journal of Hydraulic Engineering, Vol. 124, No.4, pp 358-369, April, 1998. Download PDF

27. Li, S.G., and X.Q. Zhou, " A Stochastic Theory For Irregular Stream Modeling. Part 2: Solute Transport ", Journal of Hydraulic Engineering, ASCE, Vol 123, No.7,July, 1997. Download PDF

28. Li, S.G., F. Ruan, D.B. McLaughlin and T. Cole, " A Generalized Analytical Testing Technique for Numerical Models ". Proceedings of International Conference on Computational Methods in Water Resources held in CANCUN, Mexico, July 22-26, Vol. 2, pp.19-26, 1996.

29. Li, S.G., and D.B. McLaughlin, "Using Nonstationary Spectral Method for Analyzing Groundwater Flow in Heterogeneous Trending Media", Water Resources Research, AGU, Vol. 31, No. 3, 1995. Download PDF

30. Li, S.G., F. Ruan and D.B. McLaughlin, "Reply to a discussion on A Space-Time Accurate Method for Solving Solute Transport Problems", Water Resources Research, Vol. 30, No.11, 1994.

31. Li, S.G., and D.B. McLaughlin, "Reply to a discussion on A Stochastic Theory for Irregular Stream Modeling, Part 1: Flow Resistance", Journal of Hydraulic Engineering, ASCE, Vol. 119, No. 11, 1993.

32. D.B. McLaughlin, L.B. Reid, S.G. Li and J.A. Hyman, "A Stochastic Method for Characterizing Groundwater Contamination", Journal of Groundwater, March, Vol 31, No.2, 1993. Download PDF

33. Li, S.G., F. Ruan and D.B. McLaughlin, "A Space-Time Accurate Method for Solving Solute Transport Problems", Water Resources Research, Vol. 28, No.9, 1992. Download PDF

34. Li, S.G., L. Venkataraman and D.B. McLaughlin, "A Stochastic Theory for Irregular Stream Modeling, Part 1: Flow Resistance", Journal of Hydraulic Engineering, ASCE, Vol. 118, No. 8, 1992. Download PDF

35. Li, S.G. and D.B. McLaughlin, "A Nonstationary Spectral Method for Solving Stochastic Groundwater Problems, Part 1: Unconditional Analysis", Water Resources Research, 27(7), 1991. Download PDF

36. Li, S.G. and L. Venkataraman, "Discussion on Time-Line Interpolation for the Solution of the Dispersion Equation", Journal of Hydraulic Research, Vol. 29, No. 4, 1991.

37. L.B. Reid, D.B. McLaughlin, S.G. Li and J.A. Hyman, "A New Stochastic Method for Characterizing Groundwater Contamination: Application to a Coal Tar Waste Disposal Site", Proceedings of International Hydrology and Water Resources Symposium, 1991.

38. Li, S.G., "Theoretical Longitudinal Dispersion Coefficient in Natural Rivers - A Stochastic Approach", Proceedings of XXIII IAHR Congress, Session D: Environmental Hydraulics, 1989.

39. Li, S.G., "An Optimal Exponential Difference Scheme for Solving Parabolic Partial Differential Equations", International Journal of Computation and Methodology: Numerical Heat Transfer, Vol. 14, No. 3, 1988.

40. Li, S.G. and Z.X. Liang, "Gravity-Affected Potential Flows Past Spillway Flip Buckets", Journal of Hydraulic Engineering, ASCE, Vol. 114, No. 4, 1988.

Grant Awards from the National Science Foundation

1. NSF, Principal Investigator and Project Manager, A Hierarchical Patch Dynamics Paradigm for Inverse Groundwater Modeling. $125,000, 05/15/1/05-05/14/07. Co-PIs: Q. Liu, Phanikumar Mantha.    

2. NSF, Principal Investigator and Project Manager, An IT-Enabled, Hierarchical and Patch Dynamics Paradigm for Modeling Complex Groundwater Systems Across Multiple Scales. $550,000, 10/1/04-9/30/07. Co-PIs: Q. Liu, GW, Guo. 

3. NSF, Principal Investigator and Project Manager, A Digital Laboratory for Groundwater Education and Research, $460,000, 10/1/03-9/30/05. Co-PIs:  R. Wallace, Q. Liu 

4. NSF, Principal Investigator and Project Manager, Virtual Remediation in Groundwater Environment, $528,433 (including 25% university matching), 01/01/01-12/31/03. Co-PIs: W. Fish and L. Semprini

5. NSF, Principal Investigator and Project Manager, Stochastic flow and transport in heterogeneous soils - nonstationarity, scale interaction, and a new modeling framework, $192,668, 7/1/99-6/30/02.

6. NSF, Principal Investigator and Project Manager, Stochastic flow in heterogeneous soils - a new approach for measurement conditioning. $113,363 (including 16K university matching), 07/01/98-6/30/00. 

Other Grant Awards

1. MDEQ (Michigan Department of Environmental Quality). Principal Investigator and Project Manager. GIS-based Groundwater Modeling and Probabilistic Wellhead Delineation Using the DEQ Statewide Groundwater Database. $24,950. PI, w/ Q. Liu. 7/1/06-9/30/06. 

2. MDEQ (Michigan Department of Environmental Quality). Principal Investigator and Project Manager, GIS-based Groundwater Modeling and Probabilistic Wellhead Delineation Using the DEQ Statewide Groundwater Database, $140,000, PI, w/ Q. Liu, 10/01/05 - 6/30/06.

3. MDEQ (Michigan Department of Environmental Quality). Principal Investigator and Project Manager, GIS-based Groundwater Modeling and Probabilistic Wellhead Delineation Using the DEQ Statewide Groundwater Database, $138,000, PI, w/ Q. Liu, 10/01/04 - 9/30/05.

4. GLPF (Great Lake Protection Fund), Restoring Great Lakes Basin Water through the Use of Conservation Credits and Integrated Water Balance Analysis System. $540,000. J. Batholic (PI) and others. 2005-2007

5. Corn Marketing Program of Michigan. Co-PI, Determining the Impact of Geology, Climate, and management practices on the sustainability of irrigation for corn production in the state of Michigan. $26,913. With Bill Northcott (PI) and Jeff Andresen. 2005-2006

6. MDEQ (Michigan Department of Environmental Quality). Co-PI, Evaluation of Remediation in Schoolcraft Plumes G and F Contaminated with Chloriated Solvents and Metals. $961,042, 10/1/03-9/30/05. Co-PI with M. Dybas (PI), T. Voice, X. Zhao, S. Hashsham, M. Phanikumar, D. Long, and J. Tiedje.

7. USGS (United States Geological Survey), Michigan Water Resources Program. $229,368. 4/1/03-3/30/04. With J. Batholic (PI) and others.

8. Microsoft Corporation. Instructional Lab Grant. 1997-1998.

9. METRO, Principal Investigator and Project Manager, Oregon, St. Johns Landfill Modeling, $20,000, 1996-1997.

10. Bureau of Environmental Services, City of Portland, Oregon, Principal Investigator and Project Manager, Mobile Bed Hydraulics and Sediment Transport, $80,646, 9/1/1995 - 12/31/1996.

11. METRO, Oregon, Principal Investigator and Project Manager, 3D Groundwater Flow and Transport at St. Johns Landfill, $54,000, 9/16/1994-2/28/1996.

12. METRO, Oregon, Principal Investigator and Project Manager, 3D Groundwater Flow and Transport at SJ Landfill, $83,459, 1/16/1994-9/15/1994

13. Parametrix, Inc., Principal Investigator and Project Manager, Sediment Transport, $38,477, 6/15/1994 - 7/15/1995

14. PSU, Faculty Development Grant, Principal Investigator and Project Manager,  Groundwater Modeling, $1200+Tuition, 1994.

Honors and Awards

1. Fellow, American Society of Civil Engineers (ASCE), 2007

2. Fellow, Geological Society of America (GSA), 2007

3. The Premier Award, The National Engineering Education and Delivery Systems, co-sponsored by John Wiley & Sons, Autodesk, MathWorks and Microsoft Research, 2002 

4. Scholarship of Teaching and Learning with Technology Award, 2000-2001, Portland State University

5. Outstanding Research Award, School of Engineering and Applied Science, Portland State University, 1999-2000

6. Fairview and Blue Lake Citizen Appreciation Award for Contribution to the Community Concerning the East Multnomah County Groundwater Contamination, March, 1999.

7. The Li Foundation Scholarship, $22,000. The Li Foundation, Inc., New York, 1985.

Professional Activities

• Editorial Board, Journal of Stochastic Environmental Research and Risk Assessment (SERRA). 

• Associate Editor, ASCE Journal of Hydrologic Engineering.

• Associate Editor, Journal of Ground Water, National Ground Water Association (NGWA), 2007-

• Delegate, The University Consortium on Water Resources (UCOWA). 

• Member, American Geophysical Union (AGU). 

• Member, American Society of Civil Engineers (ASCE).

• Member, National Ground Water Association (NGWA).

• Member, Geological Society of America (GSA). 

• Member, AGU Groundwater Committee. 

• Member, NGWA Groundwater Modeling Committee. 

• Member, NGWA Internet Groundwater Data Committee. 

• Member, ASCE Environmental and Water Resources Institute. 

• Member, ASCE Journal of Hydrologic Engineering Awards Committee.

• Elected Member, International Professionals for the Advancement of Chinese Earth Sciences (IPACES).

• Elected Council Member (Treasurer), International Professionals for the Advancement of Chinese Earth Sciences. 2005-2006. 

• Invited NSF Panelist, Geosciences,  2006

• Invited NSF Panelist, Engineering, 2005

• Invited NSF Panelist, Digital Library, 2005

• Invited NSF Panelist, Combined Research and Engineering Education. 2003

• Invited Speaker, American Geophysical Union Fall Meeting, Special Session H61: Numerical Modeling in Support of Water Resources Decision Making and Policy Implementation. 2006, San Francisco.

• Invited Speaker, American Geophysical Union Fall Meeting, Special Session: Fusion of Information in Hydrological Sciences. 2005, San Francisco.

• Invited Speaker, American Geophysical Union Western Pacific Geophysics Meeting. Special Session H16: Quantifying Uncertainties for Flow and Transport in the Subsurface. Beijing. July 24-27, 2006

• Invited Speaker, American Geophysical Union Western Pacific Geophysics Meeting. Special Session H21: Advances in Remediation of Contaminated Water and Soil Systems. Beijing. July 24-27, 2006

• Invited Speaker, American Water Works Association Michigan Groundwater Conference. Interactive Ground Water Project. March 14-15, 2006.

• Invited Plenary Keynote Speaker. The 6^th Conference on Groundwater Resources and Water Quality Protection, Taiwan , April 8-10, 2004.

• Invited Speaker, International Symposium on Computational Geodynamics, Chinese Academy of Sciences, Beijing, 2004.

• Invited Lecturer, Short course, Groundwater Modeling. Feng Chia University Taiwan, 2004.

• Invited Lecturer, Short course, Stochastic Groundwater Modeling, Feng Chia University Taiwan, 2000.

• Session Chair, International Symposium on Groundwater Science: Opportunities, Challenges and New Directions”, Beijing, China, 2005.

• Chair and Organizer, International Workshop on “Groundwater and Sustainable Environment”, Chengdu, China, June, 2004

• Member of Organization Committee, the 4^th Annual IPACES Symposium on Earth, Mankind, and the Environment, Chengdu, China, June, 2004  

• Session Chair and Convener, AGU Fall meeting, San Francisco, 1999

• Session Chair and Convener, AGU Fall meeting, San Francisco, 1998

• Session Chair and Convener, AGU Fall meeting, San Francisco, 1997

• Session Chair, International Conference on Hydrodynamics, Hong Kong, 1996.

• Member, AGU Hydrology Best student paper Award Committee, AGU Fall meeting, 2003

• Judge for AGU/Hydrology Student Paper Competition. 1999

• Judge for AGU/Hydrology Student Paper Competition. 1998

• Judge for AGU/Hydrology Student Paper Competition. 1997

• Grant Reviewer, National Science Foundation, Hydrological Sciences Program
  Grant Reviewer, National Science Foundation, Civil and Mechanical System Program
  Grant Reviewer, National Science Foundation, International Program
  Grant Reviewer, National Science Foundation, Comp Science and Applied  Mathematics Program
  Grant Reviewer, National Science Foundation, Intelligent and Information Systems Program
  Grant Reviewer, National Science Foundation, National Science Digital Library Program
  Grant Reviewer, Hong Kong Research Council
  Grant Reviewer, U.S. Civilian Research and Development Foundation (CRDF)
  Grant Reviewer, MSU Center for Water Sciences (CWS)
  Grant Reviewer, Illinois Water Resources Center (IWRC)/USGS Grant Program

• Journal Reviewer, Water Resources Research, AGU
  Journal Reviewer, Advances in Water Resources
  Journal Reviewer, Transport in Porous Media. Springer.
  Journal Reviewer, Journal of Ground Water, NGWA
  Journal Reviewer, Journal of Hydraulic Engineering, ASCE
  Journal Reviewer, Earth Observation System (EOS) Newsletter, AGU
  Journal Reviewer, Journal of Water Resources Planning and Management, ASCE
  Journal Reviewer, Journal of Geo-technical and Geo-environmental Engineering, ASCE
  Software Reviewer. Journal of Ground Water. NGWA
  Book Reviewer. "Theory, Modeling, and Field Investigation in Hydrogeology" published by
          Geological Society of America in honor of  Shlomo P. Neuman’s 60^th Birthday
  Book Reviewer, “Dispersion in Heterogeneous Geological Formations”, published by Academic press.