ALY EL-KADIGroundwater Hydrologist and Professor Emeritus, WRRC; Professor Emeritus, Department of Earth Sciences (page 3)



  • PhD, Groundwater Hydrology, School of Civil and Environmental Engineering, Cornell University, Ithaca, New York, 1983
  • MS, Surface Water Hydrology, Ain Shams University, Cairo, Egypt, 1976
  • BS, Fluid Mechanics and Hydraulics, Ain Shams University, Cairo, Egypt, 1971


  • Watershed modeling and analysis
  • Application and assessment of various types of groundwater models
  • Modeling multiphase flow and transport of hydrocarbons
  • Numerical modeling
  • Flow and transport in field soils
  • Databases and geographic information systems
  • Bioremediation in tidal aquifers
  • Contamination by agricultural and cesspool sources

Aly I. El-Kadi is a Professor Emeritus of hydrology in the department of Earth Sciences. His teaching and academic interests focused on hydrogeology and groundwater modeling. Professor El-Kadi is also an Affiliate Faculty researcher and Professor Emeritus at the Water Resources Research Center where his research interests covered a wide range of topics including climate change effects on water resources sustainability, numerical modeling, and modeling multiphase flow and transport of hydrocarbons.

Professor El-Kadi was the Associate Director (2000–2018) of the Water Resources Research Center, which serves the state of Hawaiʻi and other Pacific islands by researching water-related issues distinctive to the region. Between 2016–2022, he was also a member of the ʻIke Wai leadership and research teams. ‘Ike Wai was an EPSCoR project that was supported by the National Science Foundation. EPSCoR stands for Experimental Program to Stimulate Competitive Research, and ‘Iki Wai was aimed at increasing the understanding of Hawaiian island hydrology. The main objective of the project was to provide improved data for decision-making tools that address the challenges to water sustainability from climate variability, increasing population demands, and water contamination. His research for the project covered groundwater modeling and studied the increasing stress placed on Hawaiʻi’s aquifers due to factors associated with population growth, economic development, and climate change. Professor El-Kadi’s work expanded beyond Hawaiʻi to include projects in American Samoa and Jeju Island, Korea.

Professor El-Kadi earned his Ph.D. in Groundwater Hydrology from the School of Civil and Environmental Engineering at Cornell University in Ithaca, New York, an M.S. in Surface Water Hydrology from Ain Shams University, and a B.S. in Fluid Mechanics and Hydraulics from Ain Shams University located in Cairo, Egypt.



Assessment of Hydraulic Properties through Tidal Ground-level Analysis for the State of Hawaii

SPONSOR: National Institute for Water Resources, Water Resources Research Institute Program PROJECT PERIOD: 03/01/2013-02/28/2014 ABSTRACT: The Hawaii aquifers supply water to 1.36 million residents, diverse industries, and a large segment of the U.S. military in the Pacific. With the increase…

Assessment of Groundwater Availability in the Volcanic-Rock Aquifers of Oahu, Hawaii

SPONSOR:National Institute for Water Resources, Water Resources Research Institute Program PROJECT PERIOD:3/1/2014 – 2/28/2016 ABSTRACT:The volcanic-rock aquifers of Oahu supply freshwater to 70 percent of Hawaii’s population and most of other needs, including commerce, industry, and U.S. military. The resident…

Assessing Feasibility of Storm-Water Harvesting by Groundwater Injection in Nuuanu Reservoir No. 4, Oahu, Hawaii

SPONSOR:Honolulu Board of Water Supply PROJECT PERIOD:07/20/2015-07/08/2017 ABSTRACT:Surface water harvesting is a conservation method used to augment groundwater supply. The method is a form of Aquifer Storage and Recovery (ASR), which involves capturing excess water during wet periods and injecting…

Assessment and Protection Plan for the Nawiliwili Watershed

SPONSOR: State Health PROJECT PERIOD: 10/01/01 – 08/31/04 ABSTRACT: Help us identify sources of pollution in Nawiliwili Bay: Fill out our survey – CLICK HERE A team of researchers from the University of Hawaii’s Water Resrources Research Center (WRRC) worked…

A Win-Win Approach to Water Pricing and Watershed Conservation

SPONSOR: U.S. Geological Survey PROJECT PERIOD: 3/1/2003 – 2/28/2005 ABSTRACT: An integrated model of water pricing and watershed conservation was developed. The benefits of adopting the efficient integrated policy were compared to the status quo policy of under-pricing water and…

Assessing Sustainability of Groundwater Resources Under Future Climate Change Conditions

SPONSOR:National Oceanic and Atmospheric Administration (NOAA) through the East-West Center (EWC) PROJECT PERIOD:9/1/2012 – 8/31/2013 Ground water is the primary source of municipal water on most developed islands in the Pacific, and yet the reliability of water supplies on all…