Journal Articles

Bonham, N., Kasprzyk, J., Zagona, E., (2024) 鈥�Taxonomy of purposes, methods, and recommendations for vulnerability analysis,鈥� Environmental Modelling & Software, Vol183, 2025,106269, ISSN 1364-8152, (https://doi.org/10.1016/j.envsoft.2024.106269).

Martin P. Hoerling, Jon K. Eischeid, Henry F. Diaz, Balaji Rajagopalan, and Eric Kuhn (2024) 鈥�Critical Effects of Precipitation on Future Colorado River Flow,鈥� Journal of Climate, April 19, 2024 ().

Woodson, D, Rajagopalan, B., Zagona, E., (2024). "Long-Lead Forecasting of Runoff Season Flows in the Colorado River Basin Using a Random Forest Approach," Journal of Water Resources Planning and Management, 150, No. 4, January 31, 2024 ( https://doi.org/10.1061/JWRMD5.WRENG-6167).

Bonham, N., Kasprzyk, J., Zagona, E., Smith, R. (2023). "Interactive and Multimetric Robustness Tradeoffs in the Colorado River Basin" Journal of Water Resources Planning and Management, 150, No. 3, December 30, 2023 (https://doi.org/10.1061/JWRMD5.WRENG-6199).

Bonham, N., Kasprzyk, J., Zagona, E., & Rajagopalan, B. (2023). "Subsampling and space-filling metrics to test ensemble size for robustness analysis with a demonstration in the Colorado River Basin," Environmental Modelling & Software, 2023, 105933, (ISSN 1364-8152, (https://doi.org/10.1016/j.envsoft.2023.105933).

Bonham, N., Kasprzyk, J. and Zagona, E. (2022). "post-MORDM: Mapping Policies to Synthesize Optimization and Robustness Results for Decision-maker Compromise," Environmental Modelling & Software, 157, November 2022, 105491, (https://doi.org/10.1016/j.envsoft.2022.105491).

Thapa, S., Magee, T., and Zagona, E. (2022). "Factors That Affect Hydropower Flexibility," Water 2022, 14(16), [Special Issue: Feature Papers of Water-Energy Nexus], 20 August 2022 (https://doi.org/10.3390/w14162563).

Magee, T, Turner, S, Clement, M., Oikonomou, K., Zagona, E., and Voisin, N. (2022) "Evaluating Power Grid Model Hydropower Feasibility with a River Operations Model" IOP Environmental Research Letters, 08 August, 2022, (https://doi.org/10.1088/1748-9326/ac83db).

Wheeler, K., Jeuland, M., Strzepek, K., Hall, J., Zagona, E., Abdo, G., Basson, T., Blackmore, D., Block, P., & Whittington, D., (2022) "Comment on "Egypt's water budget deficit and suggested mitigation policies for the Grand Ethiopian Renaissance Dam filling scenarios," IOP Science, Environmental Research Letters, 5 August, 2022 (https://iopscience.iop.org/article/10.1088/1748-9326/ac7e5e).

Baker, S. A., Wood, A. W., Rajagopalan, B., Prairie, J., Jerla, C., Zagona, E., Butler, R. A., Smith, R. (2022). "The Colorado River Basin Operational Prediction Testbed: A Framework for Evaluating Streamflow Forecasts and Reservoir Operations," Journal of the American Water Resources Association, 29 June 2022 (https://doi.org/10.1111/1752-1688.13038).

Smith, R., Zagona, E., Kasprzyk, J., Bonham, Alexander, E., Butler, A., Prairie, J. & Jerla, C. (2022). "Decision Science Can Help Address the Challenges of Long-Term Planning in the Colorado River Basin," Journal of the American Water Resources Association, 22 January 2022 ( https://doi.org/10.1111/1752-1688.12985).

Woodson, D., Rajagopalan, B., Baker, S., Smith, R., Prairie, J., Towler, E., Ge, M. & Zagona, E. (2021). "Stochastic Decadal Projections of Colorado River Streamflow and Reservoir Pool Elevations Conditioned on Temperature Projections," Water Resources Research, 57 (12), https://doi.org/10.1029/2021WR030936

Wheeler, K.G., Jeuland, M., Hall, J.W., Zagona, E.A., & Whittington, D. (2020). 鈥�Understanding and Managing New Risks on the Nile with the Grand Ethiopian Renaissance Dam,鈥� Nature Communications, 11, 5222. https://doi.org/10.1038/s41467-020-19089-x

Basheer, M., Wheeler, K.G., Elagib, N.A., Etichia, M., Zagona, E.A., Abdo, G.M., & Harou, J.J. (2020), 鈥�Filling Africa鈥檚 Largest Hydropower Dam Should Consider Engineering Realities,鈥� One Earth, [Commentary] Volume 3, Issue 3, 18 September 2020, 277鈥�281. DOI: https://doi.org/10.1016/j.oneear.2020.08.015

Rajagopalan, B., Erkyihun, S., Lall, U., Zagona, E., & Nowak, K., (2019), 鈥�A Nonlinear Dynamical Systems-Based Modeling Approach for Stochastic Simulation of Streamflow and Understanding Predictability,鈥� AGU Water Resources Research 55. https://doi.org/10.1029/2018WR023650

Baker, S., Wood, A., Rajagopalan, B., (2019), 鈥�,鈥� Journal of the American Water Resources Association, 08 April 2019  (https://doi.org/10.1111/1752-1688.12746). 

Smith, R., Kasprzyk, J., Basekas, L.,(2018), 鈥�Experimenting with Water Supply Planning Objectives Using the Eldorado Utility Planning Model Multireservior Testbed,鈥� ASCE Journal of Water Resources Planning and Management, Volume 144, Issue 8 (https://ascelibrary.org/doi/10.1061/%28ASCE%29WR.1943-5452.0000962).

Basheer, M., Wheeler, K., Ribbe, L., Majdalawi, M., Abdo, G., & Zagona, E. (2018), 鈥�Quantifying and Evaluating the Impacts of Cooperation in Transboundary River Basins on the Water-Energy-Food Nexus: The Blue Nile Basin,鈥� Science of The Total Environment, Volume 630 (15 July 2018), 1309鈥�1323, ISSN 0048-9697, https://doi.org/10.1016/j.scitotenv.2018.02.249 (https://www.sciencedirect.com/science/article/pii/S004896971830648X).

Wheeler, K. G., J. W. Hall, G. M. Abdo, S. J. Dadson, J. R. Kasprzyk, R. Smith, and E. A. Zagona, (2018), 鈥�Exploring Cooperative Transboundary River Management Strategies for the Eastern Nile Basin,鈥� Water Resources Research, 54, 9224鈥�9254. (https://doi.org/10.1029/2017WR022149).

Erkyihun S.T., Zagona, E., & Rajagopalan, B. (2017), 鈥�Wavelet and Hidden Markov-Based Stochastic Simulation Methods Comparison on Colorado River Streamflow,鈥� Journal of Hydrologic Engineering 2017, 22(9): 04017033 1鈥�12, DOI: 10.1061/(ASCE)HE.1943-5584.0001538. 漏 2017 American Society of Civil Engineers.

Witt, A., Magee, T., Stewart, K., Hadjerioua, B., Neumann, D., Zagona, E., & Politano, M. (2017), 鈥�Development and Implementation of an Optimization Model for Hydropower and Total Dissolved Gas in the Mid-Columbia River System,鈥� Journal of Water Resources Planning and Management, Published online 10 August, 04017063 1鈥�15, DOI: 10.1061/(ASCE)WR.1943-5452.0000827. 漏 2017 American Society of Civil Engineers.

Erkyihun, S.E., Rajagopalan, B., Zagona, E., Lall, U. & Nowak, K. (2016), 鈥�Wavelet-based Time Series Bootstrap Model for Multidecadal Streamflow Simulation Using Climate Indicators,鈥� Water Resources Research, 52, 4061鈥�4077, doi:10.1002/2016WR018696.

Wheeler, K.G., Basheer, M., Mekonnen, Z. T., Eltoum, S. O., Mersha, A., Abdo, G. M., Zagona, E. A., Hall, J. W.,  & Dadson, S. J. (2016), 鈥�Cooperative Filling Approaches for the Grand Ethiopian Renaissance Dam,鈥� Water International, Published online 11 May, DOI:10.1080/02508060.2016.1177698.

Yanto, Rajagopalan, B. & Zagona, E. (2016), 鈥�Space-time Variability of Indonesian Rainfall at Inter-annual and Multi-decadal Time Scales,鈥� Climate Dynamics, 1鈥�15, DOI 10.1007/s00382-016-3008-8.

Brown, C. M., J. R. Lund, X. Cai, P. M. Reed, E. A. Zagona, A. Ostfeld, J. Hall, G. W. Characklis, W. Yu, & L. Brekke (2015), 鈥�The Future of Water Resources Systems Analysis: Toward a Scientific Framework for Sustainable Water Management,鈥�&苍产蝉辫;Water Resources Research, 51, DOI 10.1002/2015WR017114.

Smith, R., J. Kasprzyk, and E. Zagona (2015), 鈥�Many-Objective Analysis to Optimize Pumping and Releases in Multireservoir Water Supply Network,鈥�&苍产蝉辫;Journal of Water Resources Planning and Management, 04015049 1鈥�14, DOI 10.1061/(ASCE)WR.1943-5452.0000576.

Bracken, C., B. Rajagopalan, and E. Zagona (2014), 鈥�A Hidden Markov Model Combined with Climate Indices for Multi-decadal Streamflow Simulation,鈥�&苍产蝉辫;Water Resources Research, 50, 7836鈥�7846.

Ibanez, E., T. Magee, M. Clement, G. Brinkman, M. Milligan, and E. Zagona (2014), 鈥�Enhancing Hydropower Modeling in Variable Generation Integration Studies,鈥� Energy, 74 (2014), 518鈥�528.

Clement, M., T. Magee, and E. Zagona, (2014), 鈥�A Methodology to Assess the Value of Integrated Hydropower and Wind Generation,鈥� Wind Engineering, 38 (3), 261鈥�276.

Miller, W., R. Butler, T. Piechota, J. Prairie, K. Grantz, and G. DeRosa, (2012), 鈥�Water Management Decisions Using Multiple Hydrologic Models within the San Juan River Basin under Changing Climate Conditions,鈥�&苍产蝉辫;Journal of Water Resources Planning and Management, 138 (5), 412鈥�420.

Nowak, K., M. Hoerling, B. Rajagopalan, and E. Zagona (2012), 鈥�Colorado River Basin Hydroclimatic Variability,鈥�&苍产蝉辫;Journal of Climate, 25 (2), 4389鈥�4403.

Magee, T., M. Clement, and E. Zagona (2011) 鈥�RiverWare Model Development for Integrated Hydropower and Wind Generation Analysis on the Columbia Basin,鈥� University of Colorado Final Report to UT Battelle under subcontract 4000097293. December 20, 2011.

Nowak, K., B. Rajagopalan and E. Zagona (2011), 鈥�Wavelet Auto-Regressive Method (WARM) for multi-site streamflow simulation of data with non-stationary spectra,鈥�&苍产蝉辫;Journal of Hydrology, 410 (1-2) 1鈥�12.

Regonda, Satish Kumar., E. Zagona and B. Rajagopalan (2011), 鈥�Prototype Decision Support System for Operations on the Gunnison Basin with Improved Forecasts,鈥�&苍产蝉辫;Journal of Water Resources Planning and Management, 137 (5).

Bracken, C., B. Rajagopalan, and J. Prairie (2010), 鈥�A Multisite Seasonal Ensemble Streamflow Forecasting Technique,鈥�&苍产蝉辫;Water Resources Research, 46.

Nowak, K., J. Prairie, B. Rajagopalan, and U. Lall (2010), 鈥�A Non-parametric Stochastic Approach for Multisite Disaggregation of Annual to Daily Streamflow,鈥�&苍产蝉辫;Water Resources Research, 46.

Valerio, A., H. Rajaram and E. Zagona (2010), 鈥�Incorporating groundwater-surface water interaction into river management models,鈥� Ground Water, 48 (5): 661鈥�673.

Barsugli, J. J., K. Nowak, B. Rajagopalan, J. R. Prairie, and B. Harding (2009), Comment on 鈥淲hen will Lake Mead go dry?鈥� by T. P. Barnett and D. W. Pierce, Water Resources Research, 45.

Rajagopalan, B., K. Nowak, J. Prairie, M. Hoerling, B. Harding, J. Barsugli, A. Ray, and B. Udall (2009), 鈥�Water supply risk on the Colorado River: Can management mitigate?,鈥�&苍产蝉辫;Water Resources Research, 45.

Prairie, J., K. Nowak, B. Rajagopalan, U. Lall, and T. Fulp, (2008), 鈥�A Stochastic Nonparametric Approach for Streamflow Generation Combining Observational and Paleo Reconstructed Data,鈥�&苍产蝉辫;Water Resources Research, 44.

Grantz, K., B. Rajagopalan, M. Clark, and E. Zagona (2007), 鈥�Seasonal Shifts in the North American Monsoon,鈥�&苍产蝉辫;Journal of Climate, 20(9): 1923鈥�1935.

Grantz, K., B. Rajagopalan, E. Zagona, and M. Clark (2007), 鈥�Water Management Applications of Climate-Based Hydrologic Forecasts: Case Study of the Truckee-Carson River Basin, Nevada,鈥�&苍产蝉辫;Journal of Water Resources Planning and Management, 133 (4): 339鈥�350.

Prairie, J. R. and B. Rajagopalan (2007), 鈥�A Basin Wide Stochastic Salinity Model,鈥�&苍产蝉辫;Journal of Hydrology, 344 (1-2): 43鈥�54.

Wheeler, K.G. J. Pitt, T. M. Magee and D. F. Luecke (2007), 鈥�Alternatives for Restoring the Colorado River Delta,鈥�&苍产蝉辫;Natural Resources Journal, 47(4): 917鈥�967.

Carron, J., E. Zagona, and T. Fulp (2006), 鈥�Modeling Uncertainty in an Object-Oriented Reservoir Operations Model,鈥�&苍产蝉辫;Journal of Irrigation & Drainage Engineering, 132 (2): 104鈥�111.

Frevert, D., T. Fulp, E. Zagona, G. Leavesley, and Harry Lins (2006), 鈥�The Watershed and River Systems Management Program鈥擜n Overview of Capabilities,鈥�&苍产蝉辫;Journal of Irrigation & Drainage Engineering, 132(2): 92鈥�97.

Neumann, D., E. Zagona and B. Rajagopalan (2006),鈥� A Decision Support System to Manage Summer Stream Temperatures,鈥�&苍产蝉辫;Journal of the American Water Resources Association, AWRA 42(5):1275鈥�1284.

Prairie, J., B. Rajaopalan, T. Fulp, and E. Zagona (2006), 鈥�Modified K-NN Model for Stochastic Streamflow Simulation,鈥�&苍产蝉辫;Journal of Hydrologic Engineering, 11(4): 371鈥�378.

Prairie, J., B. Rajagopalan, and U. Lall (2006), 鈥�A Stochastic Nonparametric Technique for Space-time Disaggregation of Streamflows,鈥� Water Resources Research, 43(3).

Regonda, Satish Kumar., B. Rajagopalan, M. Clark, and E. Zagona (2006), 鈥�A Multimodel Ensemble Forecast Framework: Application to Spring Seasonal Flows in the Gunnison River Basin,鈥�&苍产蝉辫;Water Resources Research, 42.

Regonda, Satish Kumar., B. Rajagopalan, and M. Clark (2006), 鈥�A New Method to Produce Categorical Streamflow Forecast,鈥�&苍产蝉辫;Water Resources Research, 42.

Grantz, Katrina, Balaji Rajagopalan, Martyn Clark, and Edith A. Zagona (2005), 鈥�A Technique for Incorporating Large-Scale Climate Information in Basin-Scale Ensemble Streamflow Forecasts,鈥�&苍产蝉辫;Water Resources Research, 41(10), 2005.

Prairie, James R., Balaji Rajagopalan, Terrance J. Fulp, Edith A Zagona (2005), 鈥�Statistical Nonparametric Model for Natural Salt Estimation,鈥�&苍产蝉辫;Journal of Environmental Engineering, 131(1):130鈥�138.

Regonda, Satish Kumar, Balaji Rajagopalan, U. Lall, Martyn Clark, Y.-I. Moon (2005), 鈥�Local Polynomial Method for Ensemble Forecast of Time Series,鈥�&苍产蝉辫;Nonlinear Processes in Geophysics, 12:397鈥�406.

Regonda, Satish Kumar, Balaji Rajagopalan, Martyn Clark, John Pitlick (2005), 鈥�Seasonal Cycle Shifts in Hydroclimatology over the Western United States,鈥� Journal of Climate, 18, 372鈥�384.

Neumann, D., B. Rajagopalan, and E. Zagona (2003), 鈥�Regression Model for Daily Maximum Stream Temperature,鈥�&苍产蝉辫;Journal of Environmental Engineering, ASCE 129(7): 659鈥�666.

Carron, J. and H. Ragaram (2001), 鈥�Impact of Variable Reservoir Releases on Management of Downstream Water Temperatures,鈥�&苍产蝉辫;Water Resources Research, AGU 37(6):1733.

Eschenbach, E., T. Magee, E. Zagona, M. Goranflo, and R. Shane (2001), 鈥�Goal Programming Decision Support System for Multiobjective Operation of Reservoir Systems,鈥�&苍产蝉辫;Journal of Water Resources Planning and Management, ASCE 127(2):108鈥�120.

Zagona, E., T. Fulp, R. Shane, T. Magee, and H. Goranflo (2001), 鈥�RiverWare: A Generalized Tool for Complex Reservoir Systems Modeling,鈥�&苍产蝉辫;Journal of the American Water Resources Association, AWRA 37(4):913鈥�929.

Zigurs, I., R. Reitsma, C. Lewis, R. Hubscher, and C. Hayes (1999), 鈥�Access and Control of Computer-based Simulation Models in Inherently Conflict-Laden Negotiations,鈥�&苍产蝉辫;Group Negotiation and Decision Making, 8:511鈥�533.

Kim, K.S. and Chapra, S.C.(1997), 鈥�Temperature Model for Highly Transient Shallow Streams,鈥�&苍产蝉辫;Journal of Hydraulic Engineering, ASCE 123(1):30鈥�40.

Reitsma R.F. and J.C. Carron (1997), 鈥�Object-oriented Simulation and Evaluation of River Basin Operations,鈥�&苍产蝉辫;Journal of Geographic Information and Decision Analysis, 1(1):9鈥�24.

Reitsma, R.F. (1996), 鈥�Structure and Support of Water-resources Management and Decision-making,鈥�&苍产蝉辫;Journal of Hydrology, 177(1):253鈥�268.

Reitsma, R., I. Zigurs, C. Lewis, A. Sloane and V. Wilson (1996), 鈥�Experiment with Simulation Models in Water Resources Negotiations,鈥� Journal of Water Resources Management and Planning, ASCE 122:64鈥�70.

Runkel, R.L., K.E. Bencala, R.E. Broshears, and S.C. Chapra (1996), 鈥�Reactive Solute Transport in Small Streams: I. Development of an Equilibrium-Based Simulation Model,鈥�&苍产蝉辫;Water Resources Research, AGU 32(2):409鈥�418.

Runkel, R.L., K.E. Bencala, R.E. Broshears, and S.C. Chapra (1996), 鈥�Reactive Solute Transport in Small Streams: II. Stimulation of a pH-modification Experiment,鈥�&苍产蝉辫;Water Resources Research, AGU 32(2):419鈥�430.

Shane, R.M., E.A. Zagona, D. McIntosh, T. Fulp, and H.M. Goranflo (1996), 鈥�Project Object,鈥� Civil Engineering, ASCE 61鈥�63.