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Jagath Kaluarachchi

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Interim Dean of College of Engineering

Water Resources Engineering

Professor

Educational Background

PhD, Environmental Science and Engineering, Virginia Tech, 1988
Other, Civil Engineering, University of Hong Kong, 1984
BS, Civil Engineering, University of Moratuwa, 1980


Expertise

Groundwater, Groundwater Quality, Hydrology, River Basin Management, Surface Water Quality/Quantity, Water Quantity, Water Resources Engineering

Awards

Expression of Appreciation as the Chair of the Watershed Council, 2002/2009, 2010

EWRI Annual Congress, Rhode Island

Outstanding Researcher, 2008

Utah State University, College of Engineering

Robins Award for University Faculty Researcher of the Year, 2008

Utah State University

Diplomate, 2008

American Academy of Water Resources Engineers

Outstanding Researcher, 2007

Utah State University, Civil and Environmental Engineering

Outstanding Researcher, 2007

Utah State University, College of Engineering

Outstanding Researcher, 2006

Utah State University, Civil and Environmental Engineering

Who’s Who in Science and Engineering, 2006

Marquis Who’s Who

Expression of Appreciation, 2006

EWRI Annual Congress, Omaha, NE

Fellow, 2004

American Society of Civil Engineers

Outstanding Researcher, 1997

Utah State University, Civil and Environmental Engineering

Publications - Abstracts

    Publications - Books & Book Chapters

      Book Chapters

    • Al-Juaidy, A., Kim, U., Kaluarachchi, J., (2011). Decision Analysis to Minimize Agricultural Groundwater Demand and Salt Water Intrusion Using Treated Wastewater. IAHS-GQ10
    • Almasri, M., Kaluarachchi, J., (2011). Fate and Transport of Ground Water Contaminants: Ground Water Hydrology Manual. American Society of Civil Engineers
    • Shaqadan, A., Kaluarachchi, J., (2009). Assessment of social welfare impacts in water resources management: Selected Applications – Groundwater contamination, NPS pollution, and social equity. VDM Verlag Publishing

    * Has not been peer reviewed

    Publications - Fact Sheets

      * Has not been peer reviewed

      Publications - Curriculum

        * Has not been peer reviewed

        Publications - Journal Articles

          Academic Journal

        • Al-Juaidy, A.E, Kaluarachchi, J., Kim, U., Treated wastewater use in water deficit regions for agriculture: economic, environmental, and public health issues. Journal of American Water Resources Association, 46:2, 395-411.
        • Aljuaidi, A.E, Rosenberg, D.E, Kaluarachchi, J., (2011). Water management with wastewater treatment and reuse, desalination, and conveyance to counteract future water shortages in the Gaza Strip, Palestine. International Journal of Water Resources and Environmental Engineering, 3:12, 266-282.
        • Ammar, K., McKee, M., Kaluarachchi, J., Moe, H., Almasri, M., Khalil, A., (2011). Bayesian method for groundwater quality monitoring network. Journal of Water Resources Planning and Management, 137, 51-61.
        • Al-Juaidi, A., Rosenberg, D.E, Kaluarachchi, J., (2011). Water Management with Wastewater Treatment and Reuse, Desalination, and Conveyance to Counteract Future Water Shortages in the Gaza Strip. International Journal of Water Resources and Environmental Engineering, 3:12, 266-282. doi: 10.5897/IJWREE10.030
        • Jayasekera, D., Kaluarachchi, J., Villholth, K., (2010). Groundwater stress and vulnerability in rural coastal aquifers of the Kalpitiya Peninsula, Sri Lanka. Environmental Monitoring and Assessment, doi: 10.1007/s10661-010-1563-8
        • Kim, U., Kaluarachchi, J., (2009). Assessment of climate change impacts on water resources of the Upper Blue Nile River Basin, Ethiopia. Journal of American Water Resources Association, doi: 10.1111 ⁄ j.1752-1688.2009.00369.x
        • Kim, U., Kaluarachchi, J., (2009). Hydrologic model calibration using incomplete data: An example from the upper Blue Nile River Basin of Ethiopia. Hydrologic Processes, 23:26, 3705-3717.
        • Kaluarachchi, J., Kim, U., (2008). Application of Parameter Estimation and Regionalization Methodologies to Ungauged Basins of the Upper Blue Nile River Basin, Ethiopia. Journal of Hydrology, 362, 39-56. doi: 10.1016/j.jhydrol.2008.08.016
        • Kim, U., Kaluarachchi, J., Smakhtin, V., (2008). Generation of monthly precipitation under limited data and climate change: An example from the Upper Blue Nile River Basin. Journal of American Water Resources Association, 44:5, 1231-1247.
        • Almasri, M., Kaluarachchi, J., (2007). Integrated modeling of nitrate contamination of groundwater in agriculture-dominated watersheds. Journal of Hydrology, 343, 211-229.
        • Tesfamichael, A., Kaluarachchi, J., (2006). A methodology to assess the risk of an existing pesticide and potential future pesticides in regulatory decision-making. Environmental Science and Policy, 9, 275-290.
        • Khalil, A., Abedalrazq, K., McKee, M., Kaluarachchi, J., (2006). Ambient groundwater quality monitoring network design using Relevance Vector Machines. Water Resour. Res., 44, W08412. doi: 10.1029/2006WR005616
        • Khadam, I., Kaluarachchi, J., (2006). Analysis of trade-offs between cost minimization and equity in water quality management in agricultural watersheds. Water Resources Research, 42, W10404. doi: 10.1029/2005WR004434
        • Twarakavi, N.K, Kaluarachchi, J., (2006). Arsenic in ground waters of conterminous United States: assessment, health risk, and cost. Journal American Water Resources Association, 42:2, 275-294.
        • Illangasekare, T., Tyler, S.W, Clement, T.P, Villholth, K.G, Perera, A., Obeysekera, J., Gunatilaka, A., Panabokke, C.R, Hyndman, D.W, Cunningham, K.J, Yeh, W., Kaluarachchi, J., Van Genuchten, M., Jensen, K., (2006). Impacts of the 2004 Tsunami on Groundwater in Sri Lanka. Water Resources Research, 42, W05201. doi: 10.1029/2006WR004876
        • Twarakavi, N.K, Kaluarachchi, J., (2006). Sustainability of ground water quality considering land use changes and public health risks. Journal of Environmental Management, 81, 405-419.
        • Khadam, I., Kaluarachchi, J., (2006). Water quality modeling under hydrologic variability and parameter uncertainty using export coefficients. J. of Hydrology, doi: 10.1016/j.jhydrol.2006.03.033
        • Abedalrazq, K., Almasri, M.N, McKee, M., Kaluarachchi, J., (2005). Applicability of statistical learning algorithms in groundwater quality modeling. Water Resources Research, 41, W05010. doi: 10.1029/2005
        • Kaluarachchi, J., Twarakavi, N.K, (2005). Assessment of aquifer vulnerability due to heavy metals using ordinal logistic regression analysis. Ground Water, 43:2, 200-214.
        • Almasri, M., Kaluarachchi, J., (2005). Modular neural network to predict the distribution of nitrate in ground water using on-ground nitrogen loading and recharge data. Environmental Modelling and Software, 20:7, 851-871.
        • Almasri, M., Kaluarachchi, J., (2005). Multi-criteria decision analysis for the optimal management of nitrate contamination of aquifers. Journal of Environmental Management, 74, 365-381.
        • Tesfamichael, A.A, Caplan, A., Kaluarachchi, J., (2005). Risk-cost-benefit analysis of atrazine in drinking water from agricultural activities and policy implications. Water Resources Research, 41, W05010. doi: 10.1029/2005
        • Wethasinghe, C., Yuen, S.T, Kaluarachchi, J., Hughes, R., (2005). Uncertainty in biokinetic parameters on bioremediation. Environmental International, 32:3, 312-323.
        • Almasri, M., Kaluarachchi, J., (2004). Assessment and management of long-term nitrate pollution of ground water in agriculture-dominated watershed. Journal of Hydrology, 295, 225-245.
        • Almasri, M., Kaluarachchi, J., (2004). Implications of on-ground nitrogen loading and soil transformations on ground water quality management. Journal American Water Resources Association, 40:1, 165-186.
        • Tesfamichael, A.A, Kaluarachchi, J., (2004). Uncertainty analysis in pesticide residue risk assessment in drinking water. Human Ecology and Risk Assessment, 10:6, 1129-1135.
        • Khadam, I., Kaluarachchi, J., (2004). Use of soft data to describe the relative uncertainty of calibration data in hydrologic models. Water Resources Research, 40:11, W11505.
        • Kaluarachchi, J., Khadam, I., (2003). Applicability of risk-based management and the need for risk-based economic decision analysis at hazardous waste contaminated sites. Environment International, 29:4, 503-519.
        • Khadam, I., Kaluarachchi, J., (2003). Multi-criteria decision analysis with probabilistic risk assessment for the management of contaminated ground water. Environmental Impact Assessment Review, 23, 683-721.
        • Kaluarachchi, J., Zhao, Q., (2002). Risk assessment at hazardous waste-contaminated sites with variability of population characteristics. Environment International, 27, 1-13.
        • Morshed, J., Kaluarachchi, J., (2001). Potential enhancements to application of genetic algorithm in optimal ground water management. J. Hydrologic Engineering, 5:1, 67-73.
        • Kaluarachchi, J., Cvetkovic, V., Berglund, S., (2001). Stochastic analysis of oxygen- and nitrate-based biodegradation of organics in aquifers. Journal of Contaminant Hydrology, 41, 335-365.
        • Rashid, M., Kaluarachchi, J., (1999). A Simplified algorithm for oxygen- and nitrate-based biodegradation of hydrocarbons. Journal of Contaminant Hydrology, 40:1, 53-77.
        • Morshed, J., Kaluarachchi, J., (1998). Application of artificial neural network in flow and transport simulations. Advances in Water Resources, 22:2, 145-158.
        • Cooper, G.S, Peralta, R., Kaluarachchi, J., (1998). Optimizing separate phase light hydrocarbon recovery from contaminated unconfined aquifers. Advances in Water Resources, 21:5, 339-350.
        • Morshed, J., Kaluarachchi, J., (1998). Parameter estimation using artificial neural network and genetic algorithm for free-product migration and recovery. Water Resources Research, 34:5, 1101-1114.
        • Abdin, A., Kaluarachchi, J., (1997). Stochastic analysis of three-phase flow in heterogeneous porous media: I. Spectral/perturbation analysis. Water Resources Research, 33:7, 1549-1558.
        • Abdin, A., Kaluarachchi, J., (1997). Stochastic analysis of three-phase flow in heterogeneous porous media: II. Numerical simulations. Water Resources Research, 33:7, 1559-1566.
        • Kaluarachchi, J., (1996). Effect of subsurface heterogeneity on free-product recovery from unconfined aquifers. J. of Contaminant Hydrology, 22, 19-37.
        • Cooper, G.S, Peralta, R., Kaluarachchi, J., (1996). Stepwise pumping approach to improve free phase light hydrocarbon recovery from unconfined aquifers. J. Contaminant Hydrology, 18, 141-159.
        • Abdin, A., Kaluarachchi, J., Kemblowski, M.W, Chang, C., (1996). Stochastic analysis of multiphase flow in porous media: II. Numerical simulations. Stochastic Hydrology and Hydraulics, 10, 231-251.
        • Kaluarachchi, J., (1995). Analytical solution to two-dimensional axisymmetric gas flow with Klinkenberg effect. J. of Environmental Engineering, ASCE, 121:5, 417-420.
        • Kaluarachchi, J., Morshed, J., (1995). Critical assessment of the operator-splitting technique in solving the advection-dispersion-reaction equation: 1. First-order reaction. Advances in Water Resources, 18:2, 89-100.
        • Morshed, J., Kaluarachchi, J., (1995). Critical assessment of the operator-splitting technique in solving the advection-dispersion-reaction equation: 2. Monod kinetics and coupled transport. Advances in Water Resources, 18:2, 101-110.
        • Kaluarachchi, J., Elliott, R., (1995). Design factors for improving the efficiency of free-product recovery systems in unconfined aquifers. Ground Water, 33:6, 909-916.
        • Chang, C., Kemblowski, M.W, Kaluarachchi, J., Abdin, A., (1995). Stochastic analysis of multiphase flow in porous media: I. Spectral/perturbation approach. Stochastic Hydrology and Hydraulics, 9, 239-267.
        • Chang, C., Kemblowski, M.W, Kaluarachchi, J., Abdin, A., (1995). Stochastic analysis of two-phase water and oil flow: I. Spectral perturbation analysis. Transport in Porous Media, 19:3, 233-259.
        • Abdin, A., Kaluarachchi, J., Chang, C., Kemblowski, M.W, (1995). Stochastic analysis of two-phase water and oil flow: II. Comparison between perturbation and Monte Carlo results. Transport in Porous Media, 19:3, 261-280.
        • Kaluarachchi, J., Islam, K.M, (1995). Thermal venting to recover less-volatile hydrocarbons from the unsaturated zone: 1. Theory. J. of Contaminant Hydrology, 17, 293-311.
        • Islam, K.M, Kaluarachchi, J., (1995). Thermal venting to recover less-volatile hydrocarbons from the unsaturated zone: 2. Model Applications. J. of Contaminant Hydrology, 17, 313-331.
        • Morshed, J., Kaluarachchi, J., (1995). Genetic algorithm for ground water simulation and optimization. Trans. Amer. Geophys. Union, 78
        • Kaluarachchi, J., Parker, J.C, (1994). An efficient finite element method for modeling multiphase flow. Water Resources Research, 30:8, 2485-2486.
        • Kaluarachchi, J., Wijedasa, A.H, (1994). Optimal soil venting design using Bayesian Decision analysis. J. of Hydrology, 163, 325-346.
        • Kaluarachchi, J., Parker, J.C, (1992). Multiphase flow with a simplified model for oil entrapment. Transport in Porous Media, 7, 1-14.
        • Kaluarachchi, J., Islam, K.M, (1992). Modeling of thermal venting to remediate hydrocarbon contaminated soils. Trans. Amer. Geophys. Union, 73
        • Morshed, J., Kaluarachchi, J., (1992). Time lag error of operator splitting technique in solving the convective-dispersive-reaction equation. Trans. Amer. Geophys. Union, 73
        • Lenhard, R.J, Parker, J.C, Kaluarachchi, J., (1991). Comparing simulated and experimental hysteretic two-phase transient fluid flow phenomena. Water Resources Research, 27, 2113-2124.
        • Fischer, U., Schulin, R., Stauffer, F., Kaluarachchi, J., Keller, M., (1991). Experimentelle Untersuchungen zur Mobilitat von leichtfluchtigen CKW in der Bodenzone. Mitteilungen d. Dt. Bodenkundlichen Gesellschaft, 63, 95-98.
        • Kaluarachchi, J., Schulin, R., Fischer, U., (1991). Modeling soil venting as an option to remove dense hydrocarbon from an air-water system. Mitteilungen d. Dt. Bodenkundlichen Gesellschaft, 63, 115-118.
        • Kaluarachchi, J., Parker, J.C, Lenhard, R.J, (1990). A numerical model for areal migration of water and light hydrocarbon in unconfined aquifers. Advances in Water Resources, 13, 29-40.
        • Kaluarachchi, J., Parker, J.C, (1990). Modeling of multicomponent organic chemical transport in three phase porous media. J. of Contaminant Hydrology, 5, 349-374.
        • Lenhard, R.J, Parker, J.C, Kaluarachchi, J., (1989). A model for hysteretic relations governing multiphase flow; refinements and numerical simulations. Water Resources Research, 25, 1727-1736.
        • Kaluarachchi, J., Parker, J.C, Lenhard, R.J, (1989). Effects of fluid entrapment and hysteresis on transport of organics in multiphase media. Trans. Amer. Geophys. Union, 70
        • Kaluarachchi, J., Parker, J.C, (1989). Improving the efficiency of finite element method in modeling multiphase flow. Water Resources Research, 25, 43-54.
        • Mishra, S., Parker, J.C, Kaluarachchi, J., (1988). Analysis of uncertainty in predictions of hydrocarbon recovery from spill sites. Trans. Amer. Geophysical Union, 69:44
        • Kaluarachchi, J., Parker, J.C, (1988). Finite element model of nitrogen species transformation and transport in the unsaturated zone. J. Hydrology, 103, 249-274.
        • Kaluarachchi, J., Parker, J.C, (1988). Finite element simulation of nitrogen transformation and transport during hysteretic flow with air entrapment. Developments in Water Science, Elsevier Publishers, 36, 1-466.
        • Lenhard, R.J, Dane, J., Parker, J.C, Kaluarachchi, J., (1988). Measurement and simulation of one-dimensional transient three phase flow for monotonic liquid drainage. Water Resources Research, 24, 853-863.
        • Kaluarachchi, J., Parker, J.C, (1988). Modeling multiphase flow with improved techniques for efficiency and mass conservation. Trans. Amer. Geophys. Union, 69:16
        • Kaluarachchi, J., Parker, J.C, (1988). Modeling multiphase organic transport with gas phase convection. Trans. Amer. Geophys. Union, 69:44
        • Katyal, A.K, Parker, J.C, Kaluarachchi, J., (1988). Modeling of three phase flow with non-zero gas phase pressure gradients. Trans. Amer. Geophys. Union, 69:44
        • Lenhard, R.J, Parker, J.C, Kaluarachchi, J., (1988). Simulation of a pulse injection of nonaqueous phase liquid into the vadose zone with a fluctuating water table. Trans. Amer. Geophys. Union, 69:16
        • Kaluarachchi, J., Parker, J.C, (1987). Analysis of multispecies transformation and transport of nitrogen in the unsaturated zone. Trans. Amer. Geophys. Union, 68:50
        • Kaluarachchi, J., Parker, J.C, (1987). Effects of hysteresis with air entrapment on water flow in the unsaturated zone. Water Resources Research, 23, 1967-1976.
        • Kaluarachchi, J., Parker, J.C, (1987). Finite element analysis of water flow in variably saturated soils. J. Hydrology, 90, 269-291.
        • Parker, J.C, Lenhard, R.J, Kaluarachchi, J., (1987). Hysteretic flow in three phase porous media systems. Trans. Amer. Geophys. Union, 68:50
        • Kaluarachchi, J., Parker, J.C, (1986). Finite element analysis of water flow in the unsaturated zone. Trans. Amer. Geophys. Union, 67:16
        • Jayawardena, A.W, Kaluarachchi, J., (1986). Infiltration into decomposed granite soils; numerical modeling, applications and some laboratory observations. J. Hydrology, 84, 231-260.
        • Kaluarachchi, J., Parker, J.C, (1986). Numerical simulation of hysteretic flow in the unsaturated zone. Trans. Amer. Geophys. Union, 67:44

        * Has not been peer reviewed

        Publications - Literary Journal

          * Has not been peer reviewed

          Publications - MultiMedia

            * Has not been peer reviewed

            Publications - Technical Reports

              Research Reports

            • Kim, U., Kaluarachchi, J., Smakhtin, V.U, (2008). Climate Change Impacts on Water Resources of the Upper Blue Nile River Basin, Ethiopia, Research Report 126. International Water management Institute
            • Other Reports

            • Almasri, M., Kaluarachchi, J., (2004). Best management practices, WR – 5: The Encyclopedia of Water. John Wiley and Sons
            • Almasri, M., Kaluarachchi, J., (2004). Groundwater Flow and Transport Process, GW – 411: The Encyclopedia of Water. John Wiley and Sons

            * Has not been peer reviewed

            Publications - Translations & Transcripts

              Publications - Other

                * Has not been peer reviewed

                Scheduled Teaching

                CEE 5430, 6430 - Groundwater Engineering, Fall 2015

                CEE 5430,6430 - Groundwater Engineering, Fall 2014

                CEE 5430,6430 - Groundwater Engineering, Fall 2013

                CEE 3430 - Engineering Hydrology, Spring 2013

                CEE 5430,6430 - Groundwater Engineering, Fall 2012

                CEE 5430,6430 - Groundwater Engineering, Fall 2011


                Graduate Students Mentored