Seonggyu Park’s CV

Updated 2026-09-15

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Seonggyu
Park
Assistant
Professor
of
Hydrologic Modeling

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Curriculum
Vita

About Me

My primary focus is on developing hydrologic models to identify challenges in present and future water resources management. I am particularly interested in assessing spatial-temporal patterns of interactions between groundwater and surface water, improving water quality and sanitation in developing countries with severe water shortages, and developing new water conservation technologies regarding water catchment and harvesting systems. I am also a strong proponent of open and reproducible workflows.

Contact information

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CECE, Texas Tech University
WARTER Center
TxPWC
iHydro M&D Research Group
Github
Twitter
Google Scholar
Table of Contents


Education

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2014 — 2018 Ph.D. in Groundwater Engineering, Department of Civil & Environmental Engineering. Colorado State University, Fort Collins, CO, United States
Dissertation: Dissertation: Enhancement of Coupled Surface/Subsurface Flow Models in Watersheds: Analysis, Model Development, Optimization, and User Accessibility.
2004 — 2006 M.E. in Environmental Engineering. University of Suwon, Suwon, South Korea
Thesis: A study on Adsorption Characteristics of VOCs on Activated Carbon.
1998 — 2004 B.E. in Environmental Engineering. University of Suwon, Suwon, South Korea



Brief professional history

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Aug. 2025 — Assistant Professor of Hydrologic Modeling, Department of Civil, Environmetal & Construction Engineering, Texas Tech University, Lubbock, TX, United States
2021 — 2025 Assistant Research Scientist, Texas A&M AgriLife Research, Temple, TX, United States
2018 — 2021 Postdoctoral Research Associate, Texas A&M AgriLife Research, Temple, TX, United States
2015 — 2018 Graduate Research Assistant, Ryan Bailey’s Lab in Dept. of Civil Engineering, Colorado State University, Fort Collins, CO, United States
2011 — 2012 IT & Computer Instructor, Intercultural Institute of California (IIC), San Francisco, CA, United States
2006 — 2014 Researcher, HWASHIN Engineering & Bio Technology Co., Ltd., Incheon, South Korea


Research Experience

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I actively contribute to developing and enhancing hydrological models and software, engaging with the model and Python communities. I maintain and support these tools, and below is an overview of my authored and contributed packages, along with interactive data applications.

Model Applications

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\(\cdot\) Assess impacts of various desalinated produced water release scenarios on streamflow and the bio-ecosystem using SWAT+gwflow, (2025 — current). SWAT+
\(\cdot\) Provide technical support by developing the SWAT-MODFLOW model for the Yongsan River watershed in South Korea and conducting uncertainty analysis, (2024 — 2025). SWAT-MODFLOW, PEST, swatmf
\(\cdot\) Conducted uncertainty analysis on SWAT+ Paddy models for the Osu watershed in South Korea and the Albufera region in Spain, (2024 — 2024). SWAT+, PEST, swatp
\(\cdot\) Analyzed spatio-temporal dynamics of groundwater-surface water interactions in the Koksilah River Watershed utilizing the SWAT-MODFLOW model and swatmf optimization framework, (2024 — 2024). SWAT-MODFLOW, PEST, swatmf
\(\cdot\) Assessed Spatio-Temporal Patterns of Groundwater - Surface Water Interactions, Solute Transports, Salt, Fire and Land Management in the Colorado River Basin using APEX and coupled APEX-MODLOW-RT3D-Salt models, (2020 — 2023). APEX, AMRS, PEST
\(\cdot\) Developed modelling frameworks for parameter estimation, sensitivity and uncertainty analysis on integrated hydrological models, (2020 — 2022). Python, PEST
\(\cdot\) Developed SWAT-MODFLOW model to support resilient development and return on investment analyses in the Cubango-Okavango River Basin (CORB), (2020 — 2022). SWAT-MODFLOW, PEST
\(\cdot\) Provided technical supports by developing database, framework, and analysis tools for the Real-Time Conservation Effects and Assessment Project (CEAP) - National Modelling provided by United States Department of Agriculture (USDA), (2018 — 2019). SWAT+, Python
\(\cdot\) Assessed Surface Water and Groundwater Resources in the Middle Bosque, Texas Watershed using the coupled SWAT-MODFLOW model, (2017 — 2018). SWAT-MODFLOW, PEST
\(\cdot\) Developed groundwater models with MODFLOW for several watersheds (Middle Bosque in Texas, United States, Missouri, Deer Creek in Missouri, United States, Neishaboor, Iran, and Limpopo, Southern Africa), (2015 — 2018). MODFLOW


Model Development

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7. Park, S., and Serrano, D. (2026—current). mf6swatp: Develop a coupled modeling framework that links MODFLOW 6 and SWAT+ for surface water-groundwater interaction modeling. Fortran, Python
6. Park, S., and Jeong, J. (2025). swatp-ghg: Developed a Carbon dynamics model for predicting GHG emission and sequestration in croplands Fortran, Python
5. Jeong, J., Arnold, J., and Park, S. (2025). swatp-paddy: Developed a Rice paddy module in SWAT+ for simulating paddy rice cultivation and irrigation management in agricultural watersheds Fortran
4. Park, S., Jeong, J., Hong, Y., and Bailey, R. (2024). swatmf-Hg: Developed a Mercury dynamics module for assessing spatial and temporal variability of Mercury transport in watersheds Fortran
3. Bailey, R., Jeong, J. and Park, S. (2023). apex-mf (ARMS): Contributed to the development of a new integrated model to simulate hydrological processes in watershed systems Fortran
2. Bailey, R. and Park, S. (2020). swatp-mf: Contributed to enhancing SWAT+ simulation of groundwater flow and groundwater-surface water interactions using MODFLOW routines Fortran
1. Bailey, R and Park, S. (2017). swat-mf: Contributed to enhancing SWAT-MODFLOW Fortran


Software Development

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7. Park, S. (2025). ghgpy: Develop a GHG emission dynamics module for predicting GHG emission and sequestration in croplands Python
6. Park, S. (2024). apexmf: python modules for AMRS model parameter estimation and uncertainty analysis Python10.5281/zenodo.6000645
5. Park, S. (2024). swatmf: python modules for SWAT-MODFLOW model parameter estimation and uncertainty analysis Python10.5281/zenodo.6000645
4. Park, S. (2023). DayCentPy: Developed Python code for optimizing the DAYCENT model using the Bayesian method with the Differential Evolution Adaptive Metropolis (DREAM) algorithm Python
3. Jeong J and Park, S. (2023). APEX-CUT: Contributed to the development of APEX model optimization tool Python, QT
2. Park, S. (2023). APEXMOD: Developed a graphical user interface, a workflow implemented in QGIS, for application and evaluation of APEX-MODFLOW models Python, QT, QGIS

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1. Park, S. (2019). QSWATMOD: Developed a graphical user interface, a workflow implemented (as a plugin) in QGIS, for application and evaluation of SWAT-MODFLOW models Python, QT, QGIS


Web applications

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6. Park, S. and Serrano, D. (2026—current). Develop an interactive hydrologic modeling and data visualization platform for the Texas Produced Water Consortium (TxPWC) Python, Javascript, SWAT+
5. Celray, J. and Park, S. (2026). Developed the CoSWAT framework to advance global crop ecosystem and hydrological analysis Python, SWAT+
4. Park, S. (2023). Developed a web application for visualizing and analyzing Colorado River Basin (CRB) APEX-MODFLOW model performance Python
3. Park, S. (2021). Developed a web application for visualizing and analyzing APEX simulation results Python
2. Park, S. (2021). Developed a web application for visualizing and analyzing Biomass in grazing lands Python
1. Park, S. (2019). Developed a visualization tool for National SWAT+ model assessments SWAT+, Python


Peer-Reviewed Publications

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2026 24. Sorando, R., Park, S., Jeong, J., Sanchis-Ibor, C. and Comin, F.A (2026). Simulating mediterranean rice paddies’ water balance under climate change scenarios, Agricultural Water Management. 328, 110313. 10.1016/j.agwat.2026.110313
23. Han, H., Park, S., Bazrkar, M.H., Abitew, T.A., Hong, Y. and Jeong, J (2026). Integrated Random Forest and APEX-MODFLOW model for predicting and mapping river salinity in the Animas Watershed, Colorado River Basin, Journal of Hydrology. 64, 103302. 10.1016/j.ejrh.2026.103302
2025 22. Jeong, J., Arnold, J., Park, S., Sorando, R., Choi, S., and Kim, M (2025). Enhancement of the SWAT+ model for simulating paddy rice cultivation and irrigation management in agricultural watersheds, Journal of Hydrology. 659, 133288. 10.1016/j.jhydrol.2025.133288
2024 21. Bazrkar, M.H., Han, H., Abitew, T., Park, S., Zamani, N., and Jeong, J (2024). Application of an Ensemble Stationary-Based Category-Based Scoring Support Vector Regression to Improve Drought Prediction in the Upper Colorado River Basin, Atmosphere. 15, 1505. 10.3390/atmos15121505

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20. Han, H., Abitew, T.A., Bazrkar, H., Park, S., and Jeong, J (2024). Integrating machine learning for enhanced wildfire severity prediction: A study in the Upper Colorado River basin, Science of The Total Environment. 952, 175914. 10.1016/j.scitotenv.2024.175914
19. Balakrishnan, J.V., Bailey, R.T., Jeong, J., Park, S. and Abitew, T (2024). Quantifying climate change impacts on future water resources and salinity transport in a high semi-arid watershed, Journal of Contaminant Hydrology. 261, 104289. 10.1016/j.jconhyd.2023.104289
2023 18. Wang, X., Jeong, J., Park, S., Zhang, X., Gao, J. and Silvero, N.E (2023). DayCent-CUTE: A global sensitivity, auto-calibration, and uncertainty analysis tool for DayCent, Environmental Modelling & Software. 169, 105832. 10.1016/j.envsoft.2023.105832
17. Han, H., Abitew, T.A., Park, S., Green, C.H. and Jeong, J (2023). Spatio-Temporal Evaluation of Satellite-based Precipitation Products in the Colorado River Basin, Journal of Hydrometeorology. 27 (7), 10.1175/JHM-D-23-0003.1
16. Park, S., Jeong, J., Motter, E., and Bailey, R (2023). Introducing APEXMOD, A QGIS plugin for application and evaluation for the Enhanced APEX model, Environmental modelling & software. 165, 105723. 10.1016/j.envsoft.2023.105723
2022 15. Saadatpour, A., Bailey, R., Izady, A., Amin, Ziaei, A. and Park, S. (2022). Quantifying the impact of climate change and irrigation management on groundwater in an arid region with intensive groundwater abstraction, Environmental Earth Sciences. 81, 531. 10.1007/s12665-022-10662-9
14. White, M.J., Arnold, J.G., Bieger, K., Allen, P.M., Gao, J., Cerkasova, N., Gambone, M., Park, S., Bosch, D.D., Yen, H. and Osorio, J.M (2022). Development of a Field Scale SWAT+ Modeling Framework for the Contiguous US, Journal of the American Water Resources Association. 146, 10.1111/1752-1688.13056
13. Bailey, R.T., Jeong, J., Park, S. and Green, C.H (2022). Simulating salinity transport in High-Desert landscapes using APEX-MODFLOW-Salt, Journal of Hydrology. 610, 10.1016/j.jhydrol.2022.127873
12. Zaremehrjardy, M., Victor, J., Park, S., Smerdon, B., Alessi, D.S. and Faramarzi, M (2022). Assessment of snowmelt and groundwater-surface water dynamics in mountainous, foothill, and plain regions in northern latitudes, Journal of Hydrology. 606, 127449. 10.1016/j.jhydrol.2022.127449
2021 11. Bailey, R.T., Tasdighi, A., Park, S., Tavakoli-Kivi, S., Abitew, T., Jeong, J., Green, C.H. and Worqlul, A.W (2021). APEX-MODFLOW: A New Integrated Model to Simulate Hydrological Processes in Watershed Systems, Environmental Modelling & Software. 134, 105093. 10.1016/j.envsoft.2021.105093


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2020 10. Liu, W., Park, S., Bailey, R.T., Molina-Navarro, E., Andersen, H.E., Thodsen, H., Nielsen, A., Jeppesen, E., Jensen, J.S., Jensen, J.B. and Trolle, D (2020). Quantifying the streamflow response to groundwater abstractions for irrigation or drinking water at catchment scale using SWAT and SWAT-MODFLOW, Environmental Sciences Europe. 32, 1-25. 10.1186/s12302-020-00395-6
9. Liu, W., Bailey, R.T., Andersen, H.E., Jeppesen, E., Nielsen, A., Peng, K., Molina-Navarro, E., Park, S., Thodsen, H. and Trolle, D (2020). Quantifying the effects of climate change on hydrological regime and stream biota in a groundwater-dominated catchment: A modelling approach combining SWAT-MODFLOW with flow-biota empirical models, Science of The Total Environment. 745, 140933. 10.1016/j.scitotenv.2020.140933
8. Kim, S., Kim, S., Cho, J., Park, S., Jarrín Perez, F.X. and Kiniry, J.R (2020). Simulated biomass, climate change impacts, and nitrogen management to achieve switchgrass biofuel production at diverse sites in US, Agronomy. 10, 503. 10.3390/agronomy10040503
7. Bailey, R.T., Park, S., Bieger, K., Arnold, J.G. and Allen, P.M (2020). Enhancing SWAT+ simulation of groundwater flow and groundwater-surface water interactions using MODFLOW routines, Environmental Modelling & Software. 126, 104660. 10.1016/j.envsoft.2020.104660
6. Liu, W., Bailey, R.T., Andersen, H.E., Jeppesen, E., Park, S., Thodsen, H., Nielsen, A., Molina-Navarro, E. and Trolle, D (2020). Assessing the impacts of groundwater abstractions on flow regime and stream biota: Combining SWAT-MODFLOW with flow-biota empirical models, Science of the Total Environment. 706, 135702. 10.1016/j.scitotenv.2019.135702
2019 5. Mosase, E., Ahiablame, L., Park, S. and Bailey, R (2019). Modelling potential groundwater recharge in the Limpopo River Basin with SWAT-MODFLOW, Groundwater for sustainable development. 9, 100260. 10.1016/j.gsd.2019.100260
4. Yen, H., Park, S., Arnold, J.G., Srinivasan, R., Chawanda, C.J., Wang, R., Feng, Q., Wu, J., Miao, C., Bieger, K. and Daggupati, P (2019). IPEAT+: A built-in optimization and automatic calibration tool of SWAT+, Water. 11 (1681), 10.3390/w11081681
3. Liu, W., Park, S., Bailey, R.T., Molina-Navarro, E., Andersen, H.E., Thodsen, H., Nielsen, A., Jeppesen, E., Jensen, J.S., Jensen, J.B. and Trolle, D (2019). Comparing SWAT with SWAT-MODFLOW hydrological simulations when assessing the impacts of groundwater abstractions for irrigation and drinking water, Hydrology and Earth System Sciences. Discussions, 1-51. 10.5194/hess-2019-232
2. Park, S., Nielsen, A., Bailey, R.T., Trolle, D. and Bieger, K (2019). A QGIS-based graphical user interface for application and evaluation of SWAT-MODFLOW models, Environmental modelling & software. 111, 493-497. 10.1016/j.envsoft.2018.10.017


year count cites
1. Molina-Navarro, E., Bailey, R.T., Andersen, H.E., Thodsen, H., Nielsen, A., Park, S., Jensen, J.S., Jensen, J.B. and Trolle, D (2019). Comparison of abstraction scenarios simulated by SWAT and SWAT-MODFLOW, Hydrological Sciences Journal. 64, 434-454. 10.1080/02626667.2019.1590583


Technical Reports

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7. Jeong, J. and Park, S. (2024). Development of a Carbon dynamics model for predicting GHGs emission and sequestration in croplands, BREC Report No. 24-02. #M2400956
6. Park, S., Suarez, D., Glesson, T., and Jeong, J (2024). XWULQW’SELU WATERSHED SWAT-MODFLOW MODEL VALIDATION REPORT, BREC Report No. 24-01. #PO-094550
5. Park, S., Abitew, T. and Jeong, J (2023). Enhancement of APEX for simulating soil erosion and salt transport in the Colorado River Basin, BREC Report No. 23-01
4. Park, S. (2022). QSWATMOD: Advances and Applications, Korea Institute of Civil Engineering and Building Technology No. 22-02
3. Park, S. (2022). Latest Advances and Applications of SWAT-MODFLOW, Korea Institute of Civil Engineering and Building Technology No. 22-01
2. Park, S., Baker, T., Srinivasan, R. and Jeong, J (2022). SWAT-MODFLOW Relink Editor On Hydrologic And Water Quality System (HAWQS), BREC Report No. 22-01
1. Park, S., Baker, T. and Jeong, J (2021). Development Of The Cubango-Okavango River Basin SWAT-MODFLOW Model, BREC Report No. 21-01


Training Manuals

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3. Park, S., Bailey, R.T. and Bieger, K (2019). QGIS Interface for SWAT-MODFLOW (QSWATMOD), Blackland Research and Extension Center, Texas A&M AgriLife Research, Temple, TX
2. Bailey, R.T. and Park, S. (2019). SWAT-MODFLOW Tutorial Version 3 — Documentation for Preparing Model Simulations, Department of Civil and Environmental Engineering, Colorado State University: Fort Collins, CO, United States
1. Park, S. and Bailey, R.T (2017). SWAT-MODFLOW Tutorial—Documentation for Preparing Model Simulations, Department of Civil and Environmental Engineering, Colorado State University: Fort Collins, CO, United States


National & International Conference Presentations

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2026 34. Park, S., Serrano, D., Collins, S., Walker, S., Bernard, E., Bailey, R., Bawa, A., and Arnold, J (August,2026). SURFACE DISCHARGE: Evaluating Hydrological Impacts of Produced Water Reuse, at the annual meeting of the TxPWC 2026 Annual Members Meeting, Midland, Texas, US.
33. Park, S., Serrano, D., Collins, S., Walker, S., Bernard, E., Bailey, R., Bawa, A., and Arnold, J (June, 2026). Evaluating Hydrological Impacts of Purified Produced Water Reuse in the Pecos River Basin with SWAT+ gwflow, at the annual meeting of the 2026 International SWAT Conference, Thessaloniki, Greece.
32. Park, S., Bawa, A., Collins, and S., Walker, S (June, 2026). Assessing Hydrological Impacts of Purified Produced Water Reuse in the Pecos River Basin Using SWAT+ gwflow, Poster presented at the annual meeting of the 2026 UCOWR/NIWR Annual Water Resources Conference,San Antonio, Texas, US.
2025 31. Park, S., Collins, S., Walker, S., Bernard, E., Bailey, R., Bawa, A., and Arnold, J (Octobor, 2025). Assessing Salinity Sources and Baseflow Constraints in the Pecos River Basin using SWAT+ gwflow, at the annual meeting of the 2025 International SWAT Conference, Fort Collins, Colorado, US.
30. Park, S., Chawanda, C., Bawa, A., Jeong, J., and Jun, S (June, 2025). Water, Impact, and Sustainability Estimator (WISE) for Predicting and Adapting to Drought and Flood Risks in Rice Cultivation Under Climate Change, at the 2025 International SWAT Conference,Jeju, South Korea.
2024 29. Park, S., Jeong, J., and Arnold, J (July, 2024). Introduction to modeling practices for predicting Carbon dynamics and GHG Emissions in croplands, at the 2024 International SWAT Conference,Strasbourg, France.
28. Park, S., Jeong, J., Bailey, R., Kim, H., Hong, Y., and Kim, K (July, 2024). Assessment of Spatial and Temporal Variability of Mercury Transport in the Gumu Watershed, at the 2024 International SWAT Conference,Strasbourg, France.
2023 27. Park, S., Jeong, J., Motter, E., Xiang, Z., and Bailey, R (June, 2023). Uncertainty Quantification of Salinity Transport Simulation for Integrated Hydrological Models, at the 2023 UCOWR Annual Water Resources Conference,Fort Collins, CO, Unitied States.
26. Xiang, Z., Bailey, R., Park, S., and Jeong, J (June, 2023). Exploring the Controlling Factors on the Process of Salt Transport within the Upper Colorado River Basin Using APEX-MODFLOW-Salt, at the 2023 UCOWR Annual Water Resources Conference,Fort Collins, CO, Unitied States.
25. Park, S., Abitew, T., and Jeong, J (March, 2023). Reproducible Parameter Estimation Framework for Integrated Hydrological Models, at the 2nd PEST Conference,La Jolla, CA, Unitied States.

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2022 24. Jeong, J. and Park, S. (July, 2022). Assessment of Spatial and Temporal Variability of Water Resources and Fluxes in the Okavango Basin, at the 2022 International SWAT Conference,Prague, Czechoslovakia.
23. Park, S., Han, H., Abitew, TA., Jeong, J., and Green, C (June, 2022). Climate Change Impacts on Water Balance and Groundwater/Surface Water Interactions in the Colorado River Basin, at the 2022 World Environmental & Water Resources Congress,Atlanta, GA, United States.
2021 22. Park, S., Jeong, J., Baker, B., Wolski, P., Abitew, T., Murray-Hudson, M., Motsumi, S., Apse, C., and Andrade, C (December, 2021). Spatio-temporal variation of water resource and fluxes in the Okavango basin, Poster presented at the AGU Fall Meeting 2021,New Orleans, LA, United States.
21. Park, S., Abitew, TA., Jeong, J., Han, H., and Green, C (December, 2021). Reproducible Parameter Estimation Framework for Integrated Hydrological Models as Evidenced in the Colorado River Basin, Poster presented at the AGU Fall Meeting 2021,New Orleans, LA, United States.
20. Han, H., Abitew, TA., Park, S., Green, C., and Jeong, J (December, 2021). A Machine Learning Approach for Assessing Wildfire Vulnerability in the Colorado River Basin, Poster presented at the AGU Fall Meeting 2021,New Orleans, LA, United States.
2020 19. Park, S., White, M.J., Gao, J., Bieger, K., and Arnold, J.G (August, 2020). Analysis and visualization of large-scale model output with an interactive web-based dashboard, at the 2020 Annual Water Resources Conference,Virtual.
2019 18. Sheng, Z., Ahn, S., Jung, C., Park, S., Bailey, R., Granados-Olivas, A., Mirchi, A., Samimi, M. and Hargrove, W.L (December, 2019). Coupled SWAT-MODFLOW Modeling for Determining Groundwater Sustainability Under Climate and Pumping Scenarios in a Semi-Arid Agricultural Watershed, at the AGU Fall Meeting 2019,San Francisco, CA, United States.
17. Park, S., Bailey, R.T., Schürz, C., Arnold, J.G., and Bieger, K (July, 2019). Framework for quantifying uncertainty, sensitivity, and estimating parameters for SWAT+ with MODFLOW routines, at the 2019 International SWAT Conference,Vienna, Austria.
16. Bailey, R.T., Park, S., Navarro, E.M., Liu, W., Wei, X. and Trolle, D (July, 2019). SWAT-MODFLOW: Recent Applications and an Introduction to Version 3, at the 2019 International SWAT Conference,Vienna, Austria.
15. Bailey, R.T., Park, S., Bieger, K., and Arnold, J.G (July, 2019). Enhancing groundwater flow and groundwater-surface exchange simulation in SWAT+ using MODFLOW routines, at the 2019 International SWAT Conference,Vienna, Austria.

year count cites
14. Yen, H., Park, S., Arnold, J.G., Chawanda, C.J. and Griensven, A.V (July, 2019). IPEAT+: FORTRAN-based Automatic Calibration Tool Coupled with SWAT+, at the 2019 International SWAT Conference,Vienna, Austria.
13. Chawanda, C.J., Yen, H., Arnold, J.G., Griensven, A.V., and Park, S. (July, 2019). IPEAT+UI: An Automatic Calibration Tool with User Interface of SWAT+, at the 2019 International SWAT Conference,Vienna, Austria.
2018 12. Ahn, S., Sheng, Z., Park, S., and Bailey, R. T (December, 2018). Surface Water-Groundwater modeling for Semi-Arid Agricultural Areas using SWAT-MODFLOW, at the 2018 Fall Meeting AGU,Washington, D.C., United States.
11. Park, S., Bailey, R.T., Bieger, K., and Arnold, J.G (September, 2018). Coupling the SWAT+ and MODFLOW codes for enhanced surface / subsurface flow modeling in watersheds, at the 2018 International SWAT Conference,Brussels, Belgium.
10. Molina-Navarro, E., Bailey, R.T., Andersen, H.E., Thodsen, H., Nielsen, A., Park, S., Jensen, J. S., Jensen, J. B., and Trolle, D (September, 2018). Comparison of performance and simulation of groundwater abstraction scenarios, at the 2018 International SWAT Conference,Brussels, Belgium.
9. Park, S., and Bailey, R. T (June, 2018). Methodology for quantifying mode factor sensitivity, uncertainty, and estimation for integrated groundwater/surface water hydrologic models, at the 9th International Congress on Environmental Modelling & Software,Fort Collins, CO, United States.
8. Bailey, R.T., Park, S., Bieger, K., and Arnold, J.G (June, 2018). A new model for simulating surface-subsurface hydrological processes at the watershed scale, at the 9th International Congress on Environmental Modelling & Software,Fort Collins, CO, United States.
7. Park, S., Nielsen, A., Bailey, R.T., Trolle, D., and Bieger, K (June, 2018). A QGIS-based graphical user interface for application and evaluation of SWAT-MODFLOW models, at the 9th International Congress on Environmental Modelling & Software,Fort Collins, CO, United States.
6. Saadatpour, A., Alizadeh, A., Ziaei, A.N., Bailey, R.T., Park, S., Izady, A., and A.H. Zahraee (April, 2018). A model for simulating coupled groundwater/surface water hydrology and impact of groundwater pumping in arid irrigated watersheds, at the EGU General Assembly 2018,Vienna, Austria.
2017 5. Bieger, K., Bailey, R.T., Park, S., and Arnold, J.G (November, 2017). Development of an improved modeling framework for simulating nutrient transport in tile-drained watersheds, at the 2017 AWRA Annual Conference,Portland, OR., United States.

year count cites
4. Bailey, R.T, and Park, S. (Octobor, 2017). SWAT-MODFLOW: Hydrologic and Water Quality Modeling Tool for Coupled Land Surface / Groundwater Systems, at the ASA-CSSA-SSSA 2017,Tampa, FL, United States.
2016 3. Bailey, R.T, Wei, X., Park, S., Rathjens, H., Bieger, K., Abbas, S., and Ajaaj, A (November, 2016). Recent Advances in using SWAT-MODFLOW to Simulate Hydrological Processes in River Basins, at the 2016 AWRA Annual Water Resources Conference,Orlando, FL, United States.
2. Park, S., Bailey, R.T., and Bieger, K (July, 2016). Quantifying Surface Water and Groundwater Resources in the Middle Bosque, Texas Watershed using the Coupled SWAT-MODFLOW Model, at the 2016 International SWAT conference,Beijing, China.
1. Bailey, R.T., Rathjens, H., Bieger, K., Park, S., and Wei, X (July, 2016). SWATMOD-Prep: A Graphical User Interface for Preparing Coupled SWAT-MODFLOW simulations, at the 2016 International SWAT conference,Beijing, China.


Funding Activity

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Under review

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1. From Expert Communities to Model Internals: Identifying and Validating Representations of Scientific Knowledge Maturity. April 2027 to March 2028. Sony Electronics Inc . Proposed budget: $150,000. Role: PI. PI: Seonggyu Park. FTE: 0.12.

Current projects

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1. Assessing Hydrological Impacts of Purified Produced Water Reuse in the Pecos River Basin Using integrated Hydrological modeling framework. September 2025 to August 2027. The Texas Produced Water Consortium (TxPWC), United States . Total budget: $15,000,000. Role: Co-PI. PI: Shane Walker. FTE: 0.25.
2. Soil Health Demonstrations to Increase Regenerative Agricultural Intensification in Southern High Plains. September 2024 to September 2029. USDA-Natural Resources Conservation Services . Total budget: $4,999,387. Role: Co-PI. PI: Joseph Burke. FTE: 0.20.


Completed projects

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1. Climate-Smart Agricultural Water Resource Adaptation Platform. November 2023 to December 2025. Rural Development Administration of the Republic of Korea . Total budget: $540,000. Role: Co-PI. PI: Jaehak Jeong. FTE: 0.50 to 1.00 across project years.
2. Koksilah SWAT-MODFLOW model optimization. November 2023 to March 2024. University of Victoria, Canada . Total budget: $20,000. Role: PI. PI: Seonggyu Park. FTE: 0.70 to 1.00 across project years.
3. Assessment of Water, Salt, Fire and Land Management in Colorado River Basin using APEX. May 2017 to August 2023. Bureau of Land Management (BLM), United States . Total budget: $2,404,036. Role: Assistant Research Scientist. PI: Jaehak Jeong. FTE: 1.00.
4. Development of DayCent Optimization framework with the Differential Evolution Adaptive Metropolis (DREAM) algorithm. January 2023 to March 2023. Agoro Carbon Alliance, United States . Total budget: $25,000. Role: Co-PI. PI: Jaehak Jeong. FTE: 0.10 to 0.50 across project years.
5. SWAT-MODFLOW modeling to support resilient development and return on investment analyses in the Cubango-Okavango River Basin (CORB). April 2020 to April 2021. The Nature Conservancy (TNC), United States . Total budget: $30,000. Role: Co-PI. PI: Jaehak Jeong. FTE: 0.10 to 0.50 across project years.

Submitted (unfunded)

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1. Aquatic Organism Passage (AOP) Assessment and Design Guidance for TxDOT Culverts and Bridges. September 2026 to August 2029. Texas Department of Transportation . Total budget: $512,396. Role: PI. PI: Seonggyu Park. FTE: 0.04 to 0.08 across project years.
2. Conduct 1D and 2D Hydraulic Modeling of Traffic Rail for Design of TxDOT Bridges and Culverts. September 2026 to August 2029. Texas Department of Transportation . Total budget: $507,459. Role: PI. PI: Seonggyu Park. FTE: 0.04 to 0.08 across project years.


Professional Service

University service

year what
2025 — current Committee member, CECE Communications Committee, Texas Tech University

Dissertation and Thesis Advising

year what
Summer 2026 — Chair, David Serrano, Ph.D., Civil, Environmental, and Construction Engineering, CECE, Texas Tech University
Fall 2025 — Committee member, Aunjishu Shrabonti, M.S., Civil, Environmental, and Construction Engineering, CECE, Texas Tech University
Fall 2024 — 2025 Committee member, Kangwei Shin from China, Master program in Civil & Environmental Engineering, Hanbat National University, Chair: Jin Chul Joo, Daejeon, South Korea
Fall 2024 — 2025 Committee member, Suryeon Kim from South Korea, Master program in Civil & Environmental Engineering, Hanbat National University, Chair: Jin Chul Joo, Daejeon, South Korea


Workshops delivered

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11. Applying the gwflow module in a SWAT+ model, number of attendees: 29, (June 23-24, 2025). 2025 International SWAT Conference,Jeju, South Korea.
10. Integrated Hydrological Modeling Practices and Uncertainty Analysis, number of attendees: 34, (July 24-26, 2024). Korea Institute of Geoscience and Mineral Resources,Daejeon, South Korea.
9. ArcAPEX for Agricultural Watershed Modeling Workshop | Uncertainty Analysis (4th Day), number of attendees: 8, (April 18-21, 2023). Blackland Research and Extension Center, Temple, TX,Virtual.
8. SWAT-MODFLOW Workshop, number of attendees: 6, (Jul. 27-29, 2022). Korea Institute of Civil Engineering and Building Technology,Goyang, South Korea.
7. SWAT-MODFLOW / QSWATMOD, number of attendees: 15, (May 6,2022). Ulsan National Institute of Science and Technology (UNIST),Ulsan, South Korea.
6. ArcAPEX for Agricultural Watershed Modeling Workshop | APEX-MODFLOW (3rd Day), number of attendees: 39, (Mar. 16-18, 2022). Blackland Research and Extension Center, Temple, TX,Virtual.
5. Salinity Modeling Workshop (3 hours-session), number of attendees: 20, (Jan. 26, 2022). Blackland Research and Extension Center, Temple, TX,Virtual.
4. SWAT-MODFLOW / QSWATMOD with Dr. Ryan Bailey, number of attendees: 11, (Jul. 15-16, 2019). 2019 International SWAT Conference,Vienna, Austria.
3. SWAT-MODFLOW / QSWATMOD with Dr. Ryan Bailey, number of attendees: 20, (Sep. 17-18, 2018). 2018 International SWAT Conference,Brussels, Belgium.
2. Introduction to QSWATMOD, number of attendees: 20, (Jun. 24, 2018). 9th International Congress on Environmental Modelling & Software,Fort Collins, CO, United States.
1. Introduction to SWAT-MODFLOW / Model Optimization with PEST, number of attendees: 7, (Nov. 16, 2017). Aarhus University,Aarhus, Denmark.


Invited talks

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9. Toward Water Sustainability: Hydrologic Modeling Strategies and Applications, (Jul. 9, 2025). Hankyong National University,Anseong, South Korea.
8. Reproducible framework for model calibration and uncertainty analysis, (Jan. 9, 2025). Texas A&M AgriLife Research,Temple, TX, United States.
7. Foundational Approaches to Predicting Carbon Dynamics and Greenhouse Gas Emissions in Cropland Ecosystems, (Jul. 18, 2024). National Institute of Agricultural Sciences (NAS),Wanju-gun, South Korea.
6. Introduction to modeling practices for predicting Carbon dynamics and GHG emissions in croplands, (Jun. 19, 2024). USDA Agricultural Research Service,Jonesboro, AK, United States.
5. Uncertainty Quantification of Nitrate Transport Simulation for Integrated Hydrological Models, (Jun. 30, 2023). National Institute of Agricultural Sciences (NAS),Wanju-gun, South Korea.
4. Assessment of spatio-temporal variation of water resource and fluxes using integrated models, (Jun. 23, 2022). 2022 UST Global Mentoring Conference,Virtual.
3. Overview of SWAT / SWAT+, (May 4,2022). National Academy of Agricultural Sciences,Wanju-gun, South Korea.
2. Fundammentals of Hydrogeology and Model Applications, (Apr. 28, 2022). Dankook University,Cheonan, South Korea.
1. Introduction to the SWAT-MODFLOW model, (Aug. 11, 2016). Ulsan National Institute of Science and Technology (UNIST),Ulsan, South Korea.

Teaching

Courses taught

year what
Spring 2026 Instructor, CE 3354: Engineering Hydrology, Texas Tech University, Enrollment: 36
Fall 2025 Instructor, CE 3354: Engineering Hydrology, Texas Tech University, Enrollment: 57

Fellowships & Awards

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3. Whitney Borland Scholarship, Colorado State University, $5000, (2017).
2. Whitney Borland Scholarship, Colorado State University, $5000, (2016).
1. Hwashin E&B Affiliated Research Institute Foundation Research Award, Hwashin E&B, $24000, (2014).

Professional Affiliations

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2. American Geophysical Union
1. American Water Resources Association