Hydrology and Water Resources

HWR Directory: Faculty Profiles

Faculty Profiles
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Joint Faculty Profiles
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Adjunct Faculty Profiles

Emeritus Faculty Profiles
B | D | F | I | L | M | S | W |

Faculty Profile
	Name:	Victor R. Baker
	Title:	Regents' Professor and Professor of Geosciences and Professor of Planetary Sciences
	Office:	JW Harshbarger, 246A
	Phone:	(520) 621-7875
	e-mail:	baker@hwr.arizona.edu
	website:
Before moving to the Department of Hydrology and Water Resources in 1996, Dr. Baker was with the Department of Geosciences at The University of Arizona. His research interests are very broadly concerned with the geomorphology of the terrestrial planets, but a particular focus has been on flood processes. Specific projects are concerned with paleoflood hydrological investigations in the southwestern U. S., northern Australia, Israel, and India. Satellite remote sensing is being used to map the immense system of cataclysmic flood channels and paleolakes that occurred in central Asia at the end of the last ice age. Continuing studies are also concerned with the paleohydrological and hydroclimatological implications of channels, valleys, and other ancient water-related landforms on Mars. Work is also conducted on the history and philosophy of the Earth Sciences and on the interface of environmental science with public policy. Dr. Baker is a Foreign Member of the Polish Academy of Sciences. He is a Fellow of the American Association for the Advancement of Science and a past Chair of its Geology and Geography Division. He is also a Fellow of the Geological Society of America, and a past President of the Society. He has served on numerous panels and committees of the National Research Council including the Chair of the U. S. National Committee For the International Union for Quaternary Research (INQUA). He currently is Vice- President of INQUA's Commission on Global Continental Paleohydrology. Dr. Baker currently serves on editorial boards for the journals Geomorphology and Zeitschrift für Geomorphologie. Research Summary.
Faculty Profile
	Name:	Michael D. Bradley
	Title:	Associate Professor
	Office:	JW Harshbarger, 324F
	Phone:	(520) 621-3865
	e-mail:	mdb@hwr.arizona.edu
	website:
Dr. Bradley specializes in water resources administration with emphasis on water policy, resources management, and water rights. He is developing a theoretical perspective with which one can integrate water and infrastructural planning (such as groundwater protection and the conjunctive use of ground and surface resources) into comprehensive city and regional planning. Dr. Bradley is also evaluating the rise of water markets in the Southwest in light of their social and political consequences, especially those questions of federalism involving interstate marketing and transfer schemes. A current project is a book on water rights in the American Southwest. He consults on the use of scientific information in legal systems, international groundwater allocation, and Indian water rights and has published a book dealing with the hydrologist and engineer as an expert witness in court. In addition, Dr. Bradley is interested in the comparative study of water management in Asia, especially China and Japan. Research Summary.
Faculty Profile
	Name:	Paul D. Brooks
	Title:	Assistant Professor
	Office:	JW Harshbarger, 202
	Phone:	(520) 621-3424
	e-mail:	brooks@hwr.arizona.edu
	website:
Dr. Brooks' research and teaching interests are highly interdisciplinary in nature with a focus on applied questions of ecosystem structure and function. The majority of this work uses hydrological linkages between terrestrial and aquatic systems to understand the effects of disturbance on natural systems. A primary focus of this work is on describing the biogeochemical cycling of carbon and nutrients, which describe system function at its most basic level. Recent applied projects include: tracing pollutant movement during snowmelt; identifying and quantifying the effects of elevated N deposition on both terrestrial and aquatic ecosystems; quantifying the effects of climate change on soil carbon and nitrogen cycling and on soil trace gas flux; controls on the production and export of dissolved organic matter; and identifying controls on heavy metal export from abandoned mines. Research sites include Arctic Tundra; seasonally snow-covered mountain catchments in Colorado, Wyoming, Washington, Montana, and California; and riparian areas in Arizona. This work has been published in range of journals including: Water Resources Research, Hydrological Processes, Biogeochemistry, Oecologia, Journal of Geophysical Research, and the Journal of Arctic and Alpine Research. Research Summary.
Faculty Profile
	Name:	Don R. Davis
	Title:	Professor
	Office:	JW Harshbarger, 226B
	Phone:	(520) 621-3801
	e-mail:	drdavis@hwr.arizona.edu
	website:
Dr. Davis' central research direction is decision-making under hydrologic and other uncertainties. His basic approach utilizes Bayesian decision theory in a general systems setting. Supporting this approach is activity in stochastic hydrology, hydrologic systems, and water resources administration. He has determined the worth of hydrologic data and information for many applications. Recently completed investigations covered the sufficiency of aquifer data for regulatory use, Bayesian methodology for flash flood forecasting, and rainfall disaggregation. He is now adapting this approach to regulatory risk analysis. Research Summary.
Faculty Profile
	Name:	Paul A. "Ty" Ferré
	Title:	Associate Professor
	Office:	JW Harshbarger, 304D
	Phone:	(520) 621-2952
	e-mail:	ty@hwr.arizona.edu
	website:	http://www.hwr.arizona.edu/~ty/Ferre_UofA/ferre.htm
Dr.Ferré's interests lie in methods of monitoring flow and transport through variably saturated porous media both in the laboratory and in the field. His recent research has focused on the use of analytical and numerical techniques to define the sample areas of geophysical techniques applied to water content measurement. He has an active interest in the design of new monitoring instruments and in designing monitoring systems to characterize groundwater-surface water interaction, snowmelt, and infiltration and recharge in natural and engineered environments. Research Summary.
Faculty Profile
	Name:	Hoshin V. Gupta
	Title:	Professor of Systems Analysis, Hydrology & Water Resources. SRP Professor of Technology & Public Policy. SAHRA Leader for Integrated Basin-Scale Modeling.
	Office:	Marshall Building 532
	Phone:	(520) 626-9712
	e-mail:	hoshin.gupta@sahra.arizona.edu
	website:	http://www.hwr.arizona.edu/hoshin/
Dr. Gupta leads the Data Assimilation Group (DAG) which investigates the philosophy, theory and practice of building, calibration and application of mathematical models, and how to merge quantitative, fuzzy and/or qualitative data with models. He encourages students to understand and question conventional scientific wisdom, to examine underlying assumptions, to draw from ideas in other disciplines, and to think “outside the box.” The DAG has made contributions to the theory and practice of model calibration (including multi-criteria and Bayesian methods for assimilating information from data), global optimization, parameter sensitivity analysis, and artificial neural networks. The group is also keenly interested in the application of emerging and futuristic technologies to hydrologic science, including for example distributed and embedded sensor networks, parallel processing computational tools, and multi-satellite sensors. Dr. Gupta joined UA as a professor in 2005, after five years as associate director of SAHRA (Sustainability of semi-Arid Hydrology and Riparian Areas). He collaborates with the National Weather Service, National Center for Environmental Prediction, SAHRA, the Hydro-meteorology and Precipitation Estimation Group at UC Irvine, and others. His goal is to build a much stronger collaboration between systems scientists, experimental and field hydrologists, and behavioral scientists (the latter with particular attention to the economics of water and the needs of public policy). Research Summary.
Faculty Profile
	Name:	Thomas Maddock, III
	Title:	Professor and Head of Department
	Office:	JW Harshbarger 122
	Phone:	(520) 621-7120
	e-mail:	maddock@hwr.arizona.edu
	website:
Dr. Maddock is Professor and Head of the Department of Hydrology and Water Resources at The University of Arizona. He is also the Co-director of the University of Arizona Research Laboratory for Riparian Studies (ARLRS) and a former Deputy Director of National Science Foundation’s Science and Technology Center for Sustainability of Semi-Arid Hydrology and Riparian Areas (SAHRA). Dr. Maddock received his BS in Mathematics from the University of Houston, his MS in Applied Mathematics from Harvard University and his Ph.D. in Environmental Engineering also from Harvard University. He worked as a systems analyst and ground-water specialist for the U. S. Geological Survey for eight years before moving to The University of Arizona in 1977. Dr. Maddock teaches courses in subsurface hydrology and water resource management, and supervises Masters and Ph.D. students. His research activities have concentrated on groundwater-surface waters-evapotranspiration interactions. He has appeared as an expert witness before Special Masters of the Supreme Court of the United States, serves as a negotiator in a water dispute on the lower Rio Grande between Texas and New Mexico, and is an advisor to the Attorney General and the Office of the State Engineer of New Mexico. Research Summary.
Faculty Profile
	Name:	Jennifer Mcintosh
	Title:	Assistant Professor
	Office:	JW Harshbarger 322B
	Phone:	(520) 626-2282
	e-mail:	mcintosh@hwr.arizona.edu
	website:	http://hwr.arizona.edu/mcintosh/
My research focuses on the elemental and isotopic chemistry of surface waters, groundwaters, saline fluids, and natural gas to better constrain the sources of solutes, residence times and flow paths of fluids and gas in the subsurface, and biogeochemical processes. This research involves extensive field sampling, laboratory analyses, and geochemical and hydrologic modeling. Current projects include: 1) Impacts of past climate change (e.g. Pleistocene glaciation) on modern groundwater resources, 2) Geochemical and hydrologic controls on microbial methane generation in organic-rich sediments, such as black shales and coalbeds, and 3) Residence times of fluids and solutes in sedimentary basins and controls on chemical composition.
Faculty Profile
	Name:	Thomas Meixner
	Title:	Associate Professor
	Office:	JW Harshbarger 202
	Phone:	(520) 626-1532
	e-mail:	tmeixner@hwr.arizona.edu
	website:	http://www.hwr.arizona.edu/tmeixner/
My research interest lies at the intersection of hydrology and biogeochemistry. In particular I am interested in how hydrologic processes play a fundamental control in controlling biogeochemical processes and fluxes at the catchment scale. My research group spans from field investigations designed to understand these controls at a mechanistic and process level to modelling studies focused on forecasting biogeochemical and water quality conditions at the catchment to basin scale. In particular on the modelling side my group works on developing model calibration and uncertainty techniques that can coexist with the both multi-dimensional and yet sparse data that is typically available for water quality modelling at the basin to catchment scale. My work has spanned environments as diverse as desert scrub and alpine ecosystems and from scales of single soil profiles to 10,000 square kilometer catchments.
Faculty Profile
	Name:	Shlomo P. Neuman
	Title:	Regents' Professor
	Office:	JW Harshbarger 322D
	Phone:	(520) 621-7114
	e-mail:	neuman@hwr.arizona.edu
	website:
Dr. Neuman's fields of specialization are subsurface hydrology and contaminant transport. He has made seminal contributions to the areas of pumping test design and analysis, flow in multilayered geologic media, finite element simulation of subsurface flow and transport, estimation of aquifer parameters, fractured rock hydrology, peat hydrology, geostatistics, and stochastic analysis of heterogeneous geologic media. He is a member of the US National Academy of Engineering, a Fellow of the American Geophysical Union and the Geological Society of America. He holds an honorary professorship at the University of Nanjing in China. He received numerous awards from professional societies and is a former Birdsall Distinguished Lecturer of the GSA. Dr. Neuman has served on various national and international advisory panels; current assignments include a third three-year term on the Advisory Board to the Stanford School of Earth Sciences and on the Scientific Review Group for the Government of Canada concerning high-level nuclear waste disposal. Dr. Neuman is a former Associate Editor of Water Resources Research and a member of the Editorial Board of Stochastic Hydrology and Hydraulics. Research Summary.
Faculty Profile
	Name:	W. James Shuttleworth
	Title:	Professor Hydrology and Water Resources Professor Atmospheric Sciences
	Office:	Marshall 530B
	Phone:	(520) 621-8787
	e-mail:	shuttle@hwr.arizona.edu
	website:
Professor Shuttleworth joined the Department of Hydrology and Water Resources in 1993 having previously been Head of the Hydrological Processes Division at the Institute of Hydrology, United Kingdom. His major research interests are in physical processes in hydrology, with emphasis on evaporation and hydrometeorology, as applied to environment change at local, regional and global scales, including effects on global climate due to Amazonian deforestation and African desertification. Present research includes: The representation of heterogeneous land surfaces in Global Climate Models, the application of remote sensing methods within hydrology, and the micrometeorology of natural semi-arid vegetation and riparian systems in the desert Southwest. He serves on committees for the International Council of Scientific Unions, the International Hydrology Programme, the International Geosphere-Biosphere Project, the World Climate Research Programme and the International Pacific Research Center. A Fellow of the American Geophysical Union, the American Meteorological Society and Royal Meteorological Society, he holds a Ph.D. in High Energy Nuclear Physics and a D.Sc. from Manchester University in the UK. Research Summary.
Faculty Profile
	Name:	Peter A. Troch
	Title:	Professor
	Office:	JW Harshbarger 320A
	Phone:	520-626-1277
	e-mail:	patroch@hwr.arizona.edu
	website:	http://www.hwr.arizona.edu/patroch/
Dr. Peter A. Troch studied Agricultural Engineering and Systems Controls Engineering at the University of Ghent in Belgium. He obtained his PhD in Hydrology at the university of Ghent in 1993. He worked as an assistant professor and later as an associate professor at the Department of Forest and Water Management for 6 years. In 1999 he joined the University of Wageningen in the Netherlands as a full professor and led the Hydrology and Quantitative Water Management Group. In 2005 he was hired as a professor in the Department of Hydrology and Water Resoruces at the University of Arizona. Peter has taught courses in Hydraulics, Fluid Mechanics, Land Surface Hydrology, Catchment Hydrology, and GIS applications in Hydrological Modeling. Research Summary.
Faculty Profile
	Name:	T.-C. "Jim" Yeh
	Title:	Professor
	Office:	JW Harshbarger, 250B
	Phone:	(520) 621-5943
	e-mail:	yeh@hwr.arizona.edu
	website:	www.hwr.arizona.edu/yeh
Dr. Jim Yeh's research interests are in the area of flow and contaminant transport in vadose zones and aquifers. His work includes numerical, stochastic/geostatistical, field and laboratory analysis of effects of spatial variability on flow and contaminant migration in the subsurface; development of rapid methods for characterizing transport properties of multi-phase flow; development of cost-effective imaging tools for characterizing geological media and monitoring evolutions of water, oil, and contaminants in the subsurface using hydro/geophysical techniques. Dr. Yeh is an Associate Editor for Water Resources Research. Dr. Yeh's philosophy about geohydrology can be found in "Scale Issues of Heterogeneity in Vadose-Zone Hydrology" in Chapter 8 of the book "Scale Dependence and Scale Invariance in Hydrology" edited by Garrison Sposito, Cambridge, 1998. Research Summary.
Faculty Profile
	Name:	Marek Zreda
	Title:	Marek Zreda
	Office:	JW Harshbarger, 230B
	Phone:	(520) 621-4072
	e-mail:	marek@hwr.arizona.edu
	website:
Dr. Zreda has research interests in several areas of hydrology and environmental earth sciences. He uses environmental isotopes as tracers of hydrologic and surficial geologic processes and as dating tools. He has made contributions to the development of the surface exposure dating method based on cosmogenic 36Cl accumulation in materials exposed to cosmic radiation at the Earth's surface. Dr. Zreda is also interested in solute transport in porous media, using tracers to characterize transport properties of geological formations, and groundwater dating. He also researches past global climate change and its record in the lithosphere and hydrosphere. Study areas include the high Arctic, the Great Basin, the Wind River, Range and Hawaii; future work will be performed in Eastern and Northwestern Africa. Research Summary.
Joint Faculty Profile
	Name:	Mark Brusseau
	Title:	Mark Brusseau
	Office:	FCS 312
	Phone:	(520) 621-3244
	e-mail:	brusseau@ag.arizona.edu
	website:	http://ag.arizona.edu/SWES/people/cv/brusseau.htm http://www.u.arizona.edu/~brusseau/
Dr. Brusseau's research is focused on developing a fundamental understanding of the factors and processes influencing the transport and fate of contaminants in the subsurface. His approach integrates theoretically and experimentally based investigations with the development and use of process-based mathematical models. Specific research interests include: (1) transport of reactive contaminants in heterogeneous porous media; (2) rate-limited inter-phase mass transfer (e.g. diffusion, sorption/desorption, NAPL dissolution); (3) behavior of complex contaminant systems (multi-solute, multi-solvent, multi-phase); (4) coupled processes such as inter-phase mass transfer and biodegradation; (5) vapor-phase transport. I am also interested in the development and evaluation of innovative methods for characterization and remediation of subsurface contamination, and the evaluation of risks posed to human health by contamination.
Joint Faculty Profile
	Name:	Jon Chorover
	Title:	Professor - Environmental Chemistry Department of Soil, Water and Environmental Sciences
	Office:	Shantz 525
	Phone:	(520) 626-5635
	e-mail:	chorover@cals.arizona.edu
	website:	http://ag.arizona.edu/swes/chorover_lab/
Research in Jon Chorover's group involves lab and field experiments on natural soils, estuarine sediments and constituent phases in aqueous systems in order to better understand their role in controlling water quality and ecosystem function. We employ a range of spectroscopic and microscopic techniques to assess the molecular-scale processes responsible for biogeochemical reactions. Primary focus areas presently include (i) sorption processes of organic contaminants in soils and sediments, (ii) macromolecule-mineral surface interactions in bacterial adhesion, (iii) reactivity of radioactive solutes in the vadose zone, and (iv) metal speciation in mine-impacted soils.
Joint Faculty Profile
	Name:	Bonnie Colby
	Title:	Professor
	Office:	Econ 425
	Phone:	(520) 621-4775
	e-mail:	(520) 621-4775
	website:	http://ag.arizona.edu/arec/dept/faculty/colby.html
Dr. Colby's research is in natural resource and environmental economics and in public policy. Some of her current projects involve nonmarket valuation of natural amenities, analyzing transactions costs generated by regulatory policies, evaluating the reallocation of water resources among economic sectors, economic tools to resolve environmental conflicts, and identifying strategies to promote efficient allocation of risk associated with variability in water supply and water quality.
Joint Faculty Profile
	Name:	Barry D. Ganapol
	Title:	Professor Hydrology and Water Resources and Professor Aerospace and Mechanical Engineering
	Office:	AME 727
	Phone:	(520) 621-4728
	e-mail:	ganapol@cowboy.ame.arizona.edu
	website:	http://www.ame.arizona.edu/faculty/ganapol/ganapol.html
Supported by a strong background in applied mathematics and numerical modeling, Dr. Ganapol's primary interests include radiative transfer, neutron transport theory, and satellite remote sensing. He has spent most of his professional career developing analytical benchmarks to the transport equation with application to nuclear power generation and to biochemical nutrient cycling associated with ecosystem dynamics. He is also interested in developing numerical Laplace and Fourier transform inversion techniques for application in applied science. Dr. Ganapol is a member of the American Nuclear Society, IEEE, AAAS, American Mathematics Association and the Desert Museum. He is currently serving as an associate editor for the Journal of Transport Theory and Statistical Physics and The Annals of Nuclear Energy. Research Summary.
Joint Faculty Profile
	Name:	R.H. "Pete" Hawkins
	Title:	Professor
	Office:	Bio Sciences East, 207
	Phone:	(520) 621-7273
	e-mail:	rhawkins@ag.arizona.edu
	website:	linked here
Dr. Hawkins, watershed resources.
Joint Faculty Profile
	Name:	Katie Hirschboeck
	Title:	Associate Professor
	Office:	West Stadium 208
	Phone:	(520) 621-6466
	e-mail:	katie@ltrr.arizona.edu
	website:	http://tree.ltrr.arizona.edu/~katie/katie.html
Dr. Hirschboeck current teaching and research interest are in climatology with emphasis on variations in synoptic atmospheric circulation systems, the climatology of extreme events, and mechanisms of climatic change, hydroclimatology and surface water hydrology with emphasis on flood analysis, flood hydroclimatology, and the response of geomorphic and hydrologic systems to spatial and temporal variations in climate, dendroclimatology with emphasis on synoptic dendroclimatology and the link between atmospheric circulation processes and regional tree-growth patterns.
Joint Faculty Profile
	Name:	Kevin Lansey
	Title:	Professor
	Office:	Civil 214a
	Phone:	(520) 621-2512
	e-mail:	lansey@engr.arizona.edu
	website:	http://civil.web.arizona.edu/staff/lansey.html
Dr. Lansey currently focuses his teaching on the undergraduate engineering and hydrology courses i.e., surface hydrology, water resource administration, water resources systems.
Joint Faculty Profile
	Name:	Steven Mullen
	Title:	Professor
	Office:	PAS 586b
	Phone:	(520) 621-6842
	e-mail:	mullen@atmo.arizona.edu
	website:	http://www.atmo.arizona.edu/personalpages/mullen.html
Dr. Mullen is in charge of the computerized weather laboratory. He is currently studying the utility of ensemble forecasting, i.e. running several model forecasts starting from slightly different initial states. The results of this work should improve the prediction of atmospheric phenomena that traditionally have been difficult to forecast accurately. He is also examining mechanisms important to the onset and maintenance of the Arizona monsoon, with the long-term goal being useful seasonal predictions of summertime precipitation over the region.
Joint Faculty Profile
	Name:	Ferenc Szidarovszky
	Title:	Professor
	Office:	ENGR 312
	Phone:	(520) 621-6557
	e-mail:	ferenc@email.arizona.edu
	website:	http://www.sie.arizona.edu/faculty/szidar.html
Dr. Szidarovszky's research interests are in numerical methods, game theory, systems theory, dynamical economic systems, multiobjective programming, modeling industrial processes and natural resources. He is also the Associate Editor of Pure Mathematics and Application.

Joint Faculty Profile
	Name:	Juan B. Valdes
	Title:	Professor and Head of Department Civil Engineering and Engineering Mechanics
	Office:	Civil 206
	Phone:	(520) 621-6564
	e-mail:	jvaldes@u.arizona.edu
	website:	http://civil.web.arizona.edu/staff/valdes.html
Dr. Valdes' research interest include stochastic and deterministic hydrology, flood forecasting analysis, synthesis and sampling of Hydrologic Processes, mathematical models of natural resources systems, modeling of space-time precipitation, environmental risk assessment, and stochastic modeling of environmental processes.
Joint Faculty Profile
	Name:	Art W. Warrick
	Title:	Professor
	Office:	Shantz 429
	Phone:	(520) 621-1516
	e-mail:	aww@ag.arizona.edu
	website:	http://ag.arizona.edu/SWES/people/cv/warrick.htm
Dr. Warrick's research and topical interest are in movement and interaction of water and soil as well as describing how materials move in the soils; unsaturated flow including point and line sources into the vadose zone; movement of potential pollutants in the vadose zone; application of geostatistics in the management of soil and water. He teaches classes in soil physics and soil water dynamics.
Joint Faculty Profile
	Name:	Marvin J. Waterstone
	Title:	Associate Professor
	Office:	Harvill 445B
	Phone:	(520) 621-1478
	e-mail:	marvinw@u.arizona.edu
	website:	http://geog.arizona.edu/~web/marv.html
Dr. Marv Waterstone's interests focus on science and technology, the intersections of discourse and power, social theory, and activist and critical geography. In addition, he continues to work on environmental and water management, with previous research support from NATO, USGS, and the US Army Corps of Engineers. He formerly served as Director of the Graduate Interdisciplinary program in 'Comparative Cultural and Literary Studies' at U of A, and was formerly associate editor of the Annals of the Association of American Geographers.
Joint Faculty Profile
	Name:	Peter J. Wierenga
	Title:	Professor Water Resource Research Center
	Office:	Shantz 522 and 350 N. Campbell, WRRC
	Phone:	(520) 792-9591x52
	e-mail:	wierenga@ag.arizona.edu
	website:	http://ag.arizona.edu/SWES/people/cv/wierenga.htm
Dr. Wierenga is the Director of the Water Resource Research Center where the processes of water flow and contaminant transport through saturated and unsaturated soils is studied. Also movement of heavy metals, radionuclides, fertilizers and pesticides through soil, heat transport through soil, monitoring methodology and strategies for vadose zone processes. The application of computer models is applied. The effects of irrigation on the quality of groundwater, and on irrigation return flow, consumptive use of water by plants, and the development and testing of models to predict plant water use are also part of the studies at WRRC.
Adjunct Faculty Profile
	Name:	Bart Nijssen
	Title:	Assistant Professor Hydrology and Water Resources Assistant Professor Civil Engineering & Engineering Mechanics
	Office:	JW Harshbarger 320A
	Phone:	(520) 626-1277
	e-mail:	nijssen@hwr.arizona.edu
	website:	http://w3.arizona.edu/~civil/bart.htm
Dr. Nijssen's interest are in macroscale hydrology, hydrometeorology, regional hydrological effects of global change, development and application of hydrological models. Research Summary.
Emeritus Faculty Profile
	Name:	Nathan Buras
	Title:	Professor
	Office:	JW Harshbarger, 226A
	Phone:	(520) 621-9132
	e-mail:	buras@hwr.arizona.edu
	website:
Dr. Nathan Buras' present research activities include a study of the conjunctive operation of surface streams and groundwater aquifers when several decision-makers are involved in the process. Other research projects under development include the environmental effects of irrigated agriculture and its long-term sustainability and an investigation into the effects of global climatic change on water resources in the lower Colorado Basin. His area of expertise is the design and operation of water resources systems and the application of systems analysis and mathematical programming to the development and management of water resources. Dr. Buras was invited to present the keynote paper on "Current Issues in Planning and Operating Hydro-Systems" at the 11th National Congress of the Mexican Society of Hydraulic Engineers. He also presented the keynote address at the session on water resources at the Pugwash Meeting #185 devoted to "Winning the Peace: A Comprehensive Regional Security Structure in the Middle East and Gulf Area." Dr. Buras is a member of the management group of the Universities Council on Water Resources Committee on International Affairs, member of the Water Policy and Institutions Committee of the American Society of Civil Engineers, and member of the International Affairs Committee of the American Water Resources Association. He is Fellow and Life Member of the American Society of Civil Engineers, Fellow of International Water Resources Association, and Fellow of the Arizona-Nevada Academy of Science. Research Summary.
Emeritus Faculty Profile
	Name:	Stanley N. Davis
	Title:	Professor Emeritus
	Office:	JW Harshbarger, 230C
	Phone:	743-7470
	e-mail:	sdavis@hwr.arizona.edu
	website:
Hydrogeology, land subsidence, chemical characteristics of groundwater, isotope hydrology. (Held joint appointment with Geosciences).
Emeritus Faculty Profile
	Name:	Lucien Duckstein
	Title:	Professor Emeritus
	Office:	ENGR, 101
	Phone:	621-6548
	e-mail:
	website:
Multi-criterion decision-making, fuzzy and stochastic modeling of water resources systems. (Held joint appointment with Systems and Industrial Engineering).
Emeritus Faculty Profile
	Name:	Martin M. Fogel
	Title:	Professor Emeritus
	Office:	1955 E. 6th Street, Arid Lands Studies
	Phone:	621-3283
	e-mail:
	website:
Renewable Natural Resources (Held joint appointment with Arid Lands Studies).
Emeritus Faculty Profile
	Name:	Simon Ince
	Title:	Professor Emeritus
	Office:	JW Harshbarger
	Phone:	792-9255
	e-mail:
	website:
Surface hydrology, flood hydrology. (Held joint appointment with Civil Engineering and Engineering Mechanics).
Emeritus Faculty Profile
	Name:	Austin Long
	Title:	Professor Emeritus