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Jae Hyeon Ryu

Jae Hyeon Ryu



Idaho Water Center, Suite 242



Mailing Address

University of Idaho Boise
322 E Front Street
Boise, Idaho 83702

My research is on drought monitoring and forecasting, hydrological modeling, and water resources planning and management in a changing global environment associated with urbanization and climate variability. Continue in biography.

Ph.D., University of Washington, 2006
M.S., University of Washington, 2002
B.S., Konkuk University, 1996

  • Drought monitoring/forecasting/outlooks
  • Unmanned aerial system (UAS)/drone
  • Unmanned ground vehicle (UGV)/ground robot
  • Unmanned surface vehicle (USV)/drone boat
  • Water resources planning and management/irrigated agriculture
  • Climate change/hydrologic modeling

  • Ryu, J., 2022. “Prototyping a low-cost open-source autonomous unmanned surface vehicle for real-time water quality monitoring and visualization,” HardwareX, Volume 12, October 2022, e00369
  • Ryu, J., 2022 “Low-cost Live Insect Scouting Drone: iDrone Bee”, Journal of Insect Science, 22(4):5, 1-6, 2022
  • Ryu, J., 2022 “UAS-based Real-Time Water Quality Monitoring, Sampling, and Visualization Platform (UASWQP),” Hardware X, 11, E00277
  • Ryu, J, LaPagalia, K., Walters, R. 2020. “Idaho Drone League (iDrone) to Stimulate STEM Workforce, Journal of STEM Education: Innovations and Research, 21 (2), 58-64
  • Kim, J. and Ryu, J.H. 2020 “Decision-Making of LID-BMPs for Adaptive Water Management at the Boise River Watershed in a Changing Global Environment, Water, 12, 2436; doi:10.3390/w12092436
  • Ryu, J. and Kim, JJ. 2019. “A study on climate-driven flash flood risks in the Boise River Watershed, Idaho," Water 11, 1039; doi:10.3390/w11051039, 2019
  • Hoekema, D., Ryu, J. H., 2016. “Characterizing Drought in Irrigated Agricultural Systems: The Surface Water Delivery Index (SWDI),” Journal of the American Water Resources Association, 52(3), 737-755
  • Kim, J.J., Ryu, J.H. 2016. “A Heuristic Gap Filling Method for Daily Precipitation Series”, Water Resources Management, 30(7), 2275-2294
  • Sohrabi, M., Ryu, J. H., Abatzoglou, J., Tracy, J., 2016. “Closure to Discussion: Development of Soil Moisture Drought Index (SODI) to Characterize Hydrological Drought by Mohammad M. Sohrabi, Jae H. Ryu, John Abatzoglou and John Tracy, DOI:10.1061/(ASCE)HE.1943-5584.0001213, 21(4), 07016002-1
  • Sohrabi, M., Ryu, J. H., Abatzoglou, J., Tracy, J., 2015. “Development of Soil Moisture Drought Index (SODI) to Characterize Hydrological Drought,” Journal of Hydrological Engineering, 20(11), 0415025(1-15)
  • Kim, J.J., Ryu, J.H. 2015. “Quantifying a threshold of missing values for gap filling processes in daily precipitation series,” Water Resources Management, 29(11),4173-4184
  • Ryu, J. H., Sohrabi, M., Acharya, A. 2014. “Toward mapping gridded drought indices to evaluate local drought in a rapidly changing global environment,” Water Resources Management, 28(11), 3859-3869
  • Kim, J. J., Ryu, J. H., 2014. “A threshold of basin discretization levels for HSPF simulations with NEXRAD inputs,” Journal of Hydrological Engineering, 19(7), 1401-1412
  • Acharya A., Ryu, J. H. 2014. “Simple method for streamflow disaggregation,” Journal of Hydrological Engineering, 19(3), 509-519
  • Sohrabi, M., Ryu, J. H., Alijani, B., 2013. “Spatial and temporal analysis of climatic extremes over the mountainous region of Iran,” The International Journal of Climate Change: Impacts and Responses, 4(4), 19-37
  • Hoekema, D., Ryu, J. H., 2013. “Evaluating Economic Impacts of Water Conservation and Hydrological Forecasts in the Salmon Tract, Southern Idaho,” Transaction of the ASABE, 56(4), 1-12
  • Sohrabi, M., Ryu, J H.., Abatzoglou, J., Tracy, J. 2013. “Climate extreme and its linkage to regional drought over Idaho, USA,” Natural Hazards, 65:653-681
  • Ryu, J H.., Contor, B., Johnson, G., Allen, R., Tracy, J. 2012. “System Dynamics to Sustainable Water Resources Management in the Eastern Snake Plain Aquifer under Water Supply Uncertainty," Journal of the American Water Resources Association, 48(6), 1204-1220
  • Smith, M.B., Koren, V., Zhang, Z., Zhang, Y., Reed, S.M., Cui, Z., Moreda, F., Cosgrove, B.A., Mizukami, N., Anderson, E.A., DMIP 2 Participants (Ryu, J.H.), 2012. “Results of the DMIP 2 Oklahoma experiments,” Journal of Hydrology, 418-419, 17-48
  • Ryu, J.H., Jeong, S., Park, S.K., Lee, J., Han, K., 2011. “The impacts of climate change on the local hydrology and drought (low flow) frequency,” Hydrological Processes, 25(22), 3437-3447
  • Ryu, J.H., Svoboda, M.D., Lenters, J.D., Tadesse, T., Knutson, C. 2010. “Finding Potential Extents for ENSO-Driven Hydrologic Drought Forecasts in the United States,” Climatic Change, 101(3),575-597

Remote sensing technologies, including satellite information and Unmanned Aerial System (UAS, also known as drone) are used as tools to promote my research and education program. I am also founder and principal investigator of the Idaho Drone League (iDrone) to engage Idaho youth (7-11 grade) entering Science, Technology, Engineering and Mathematics (STEM) field for their future career. The iDrone helps students to learn basic concepts in automatic control, robotics and UAS in two-day hands-on workshops across the state. It usually takes place during spring break in respective school districts areas.

Jae Hyeon Ryu's research areas focus on: sustainable water resources planning and management in Idaho and the west, including mitigation and adaptation strategies for climate change impacts, irrigated agriculture and surface/groundwater interactions. Ryu received his doctorate in 2006 and master's in 2001 in civil and environmental engineering from the University of Washington. Ryu earned a master's in 1998 and a bachelor's in 1996 in agricultural engineering from Konkuk University in Seoul, Korea.

Prior to coming to the University of Idaho in 2010, he worked for three years at the National Drought Mitigation Center based in the School of Natural Resources at the University of Nebraska-Lincoln as a hydrologist and climate impact specialist. His potential research collaborators include the University of Idaho’s faculty across all academic areas and state/federal personnel located in Boise. He is currently affiliated with professional societies, including the American Geophysical Union, the American Water Resources Association and the American Society of Civil Engineers.

  • Brain Pool Fellow, National Research Foundation, Korea, 2017
  • Lawrence Berkeley Faculty Fellow, U.S., 2017
  • U.S. Air Force Faculty Fellow, U.S., 2016-2017


University of Idaho

Physical Address:
E. J. Iddings Agricultural Science Laboratory, Rm 242
606 S Rayburn St

Mailing Address:
875 Perimeter Drive MS 2340
Moscow, ID 83844-2340