Hydrogeology
Associate Professor
Associate Department Head

Contact

milewski@uga.edu
Office:
Geography-Geology Building #134

Current Research Interests

Dr. Milewski’s research focuses primarily on complex and interrelated geologic and environmental problems using field-based data, remote sensing techniques, and numerical models.  His research weaves three interconnected threads related to water resources: addressing issues pertaining to the sources, distribution, sinks, fluxes, and mechanisms of groundwater recharge on local and regional scales; development and assessment of hydrologic models using both field-based data and cost-effective technologies to quantify, forecast, and better understand water resources; and advancing the science of satellite applications in hydrology and geology.  His research is primarily in arid to semi-arid environments or within data-sparse environments.

​1. Addressing issues pertaining to the sources, distribution, sinks, fluxes, and mechanisms of groundwater recharge on local and regional scales.
2. Development and assessment of hydrologic models using both field-based and cost-effective technologies to quantify, forecast, and better understand water resources.
3. Advancing the science of satellite applications in hydrology and geology.
4. Broad applications utilizing geophysics, isotope geochemistry, and GIS in water resources.

Education:
  • Ph.D., Western Michigan University, 2008 - Hydrogeology
  • B.S., SUNY at Buffalo, 2004 - Geology
Research Interests:

1.) Addressing issues pertaining to the sources, distribution, sinks, fluxes, and mechanisms of groundwater recharge on local and regional scales

Dr. Milewski’s investigations on recharge have focused primarily on estimating recharge rates in ephemeral channels, known locally as wadis, in response to infrequent flash flood events.  In collaboration with Drs. Alan Fryar of University of Kentucky and Farouk Soliman of Suez Canal University, Dr. Milewski has deployed an array of soil temperature probes to monitor and characterize the magnitude and timing of recharge in Egypt and Morocco.  This research provides a framework for determining recharge rates, identifying flooding events, and understanding the groundwater-surface water interactions in arid environments. Recent applies thermal satellite remote sensing techniques to place the localized field results into a larger regional context.

Dr. Milewski’s research also investigates regional estimates of groundwater abstraction and the subsequent effect of land subsidence using GRACE satellite data and persistent scatterer radar interferometry.  Radar interferometry uses multiple satellite radar scenes to dampen the noise components (e.g., atmosphere, vegetation) and results in a strengthened signal of land deformation.  In collaboration with Dr. Lhouissane Bouchaou of University Ibn Zohr in Morocco, Dr. Milewski has determined the magnitude and spatial distribution of land subsidence caused by excessive groundwater pumping in Souss Basin, Morocco.  These results have allowed them to develop better long-term water management strategies and apply this technique to other basins in Morocco.  

Understanding recharge mechanisms and subsurface flow paths is integral to Dr. Milewski’s research on understanding factors that govern the timing and distribution of recharge.  In collaboration with Dr. Ahmed Al-Dousari of the Kuwait Institute for Scientific Research, Dr. Milewski has determined the recharge mechanism in Kuwait is from focused or localized recharge which collects in drainage depressions where rapid infiltration occurs.  These results were combined with other hydrogeologic parameters (e.g. infiltration tests, groundwater head) and satellite remote sensing to develop a methodology for identifying freshwater lenses in areas underlain by saline aquifers.

In collaboration with Drs. Abdou El Magd of KAUST in Saudi Arabia and Mohamed Sultan of Western Michigan University, Dr. Milewski helped to prove the hypothesis that modern recharge to the Nubian Aquifer is occurring in Egypt.  Field investigations and water sample collection and analysis in Wadis Baraga and Zalaga positively identified the presence of subsurface water using near-surface geophysics (electrical resistivity and VLF) and stable isotope (O18, D2) systematics.  The flow paths and timing of recharge events over the past 50,000 years were identified and the timing of previous recharge events during previous wet climatic periods (African Humid Period in the Holocene) to the historically fossil aquifer was constrained using paleorecharge temperatures derived from nobles gases (He, Xe, Kr) and radioactive isotopes (C14). 

2.) Development and assessment of hydrologic models using both field-based data and cost-effective technologies to quantify, forecast, and better understand water resources

Hydrologic models are useful tools for predicting the magnitude, distribution, and timing of complex and interconnected hydrologic processes.  The disadvantage of processed-based models such as SWAT is the amount of necessary data to accurately simulate processes within a watershed, are often insufficient or lacking on these scales.  Dr. Milewski’s pioneering research addresses these shortcomings by integrating satellite-based data sets (e.g. rainfall, temperature) to support field-based data.  His research quantifies hydrologic fluxes in physically ungauged basins in arid environments and evaluates the uncertainty and accuracy of these models.  Dr. Milewski pioneering work on satellite-based hydrologic models resulted in several publications, one of which was the most downloaded article for hydrology in ScienceDirect (Milewski et al., 2009).

Recent research by Dr. Milewski examines the impacts and forecasts the effects of climate change on regional water resources using remote sensing and land surface models.  Dr. Milewski worked with researchers from Western Michigan University and University of Toledo to identify the climatic index most responsible for precipitation patterns in North Africa, forecast future changes in rainfall and temperature using IPCC data, and model changes in the water resources of North Africa.  This study produced one of the few models on climate change impacts on water resources in Africa. 

3.) Advancing the science of satellite applications in hydrology and geology

The integration of satellite-based data in geology or hydrology has been exploited for the past two decades.  However, there are limitations in scale, resolution, and ability to predict a particular biophysical parameter.  For example, the ability of satellite sensors to predict vegetation health based upon water absorptions due to vibrational processes in electron shells is clear and discernible.  Conversely, the ability to measure rainfall is limited to specific regions and conditions.  Dr. Milewski’s research aims to advance the science of satellite applications in hydrology and geology.  Dr. Milewski determined the accuracy and limitations of satellite-based precipitation (e.g., TRMM, CMORPH, RFE) in low rainfall and complex terrain environments; problems largely unknown to the scientific community.  In addition, he uses computer image processing programs and data fusion techniques in an attempt to enhance satellite-based measurements of the hydrologic cycle such as streamflow, groundwater, subsidence rates, and evapotranspiration.  This research helps further our knowledge of the science in physically ungauged basins.

Grants:
  • 2013-2014 Milewski, A., P.I., Assessment and Characterization of TRMM Satellite Precipitation Products in Varying Climatic, Topographic, and Hydrologic Regimes, University of Georgia Provost Summer Fund, (2013-2014; Total: $5,000)
  • 2012-2014 Milewski, A., Co-P.I., (PI  - Alan Fryar; University of Kentucky)  - Building Opportunity Out of Science and Technology (BOOST): Helping Hydrologic Research (H2O) in Indonesia and Turkey, US State Department  - Bureau of Oceans and International Environmental and Scientific Affairs, (2012-2014; Total: $198,000; UGA: $85,000)
  • 2012-2013 Milewski, A., P.I., Using Radar Interferometry (InSAR) to Evaluate Land Subsidence Caused by Excessive Groundwater Withdrawal in Morocco, University of Georgia Provost Summer Fund, (2012-2013; Total: $5,000)
  • 2011-2013 Milewski, A., Co-P.I., (PI  - Alan Fryar (University of Kentucky)  - Building Opportunity Out of Science and Technology (BOOST): Energizing Young Middle Eastern and North African Scientists  - Enhancing Capacity for Water  -Resource Studies in Egypt and Morocco, US State Department, (2011-2013; Total: $250,000, UGA: $80,000)
  • 2011-2015 Milewski, A., Co-I., (PI - Mohamed Sultan) - Use of GRACE, Remote Sensing, and Traditional Datasets for Modeling Time-Dependent Water Partitioning on Continental Scales: A Case Study from Africa, Funded by NASA. (2011-2015; Total: $453,000)
  • 2010-2013 Milewski, A., Co-P.I., (PI  -Mohamed Sultan) - Detailed Studies on Landslides in Jazan Area (Saudi Arabia), Saudi Geological Survey, (2010-2013; Total: $300,000)
  • 2010-2011 Milewski, A., Co-P.I., (PI - Ahmad Al-Dousari) - Groundwater Potentiality Studies in Kuwait, Kuwait Institute for Scientific Research, (2010; Total: $5,000)
  • 2009-2012 Milewski, A., Co-P.I., (PI  -Richard Laton) - Identifying Areas for Artificial Recharge in the Mojave Desert, Mojave Water Agency & University of California State at Fullerton, (2009-2012; Total: $200,000,WMU: $75,000)
  • 2009-2010 Milewski,A., P.I., Hydroinformatics: Bridging the Gap Between Technology and Hydrology, Funded by Western Michigan University, (2009-2010; Total: $20,000)
  • 2008-2010 Milewski,A., P.I, Developing Cost-effective Methodologies for Groundwater Assessment and Exploration in Sinai, Funded by National Institute of Standards and Technology (NIST) in cooperation with USDA, (2008-2010; Total: $8,500)
     
Selected Publications:
  • Milewski, A., El Kadiri, R., and Durham, M., 2015, Assessment and Intercomparison of TMPA Satellite Precipitation Products in Varying Climatic and Topographic Regimes in Morocco, Remote Sensing, 7, 5697-5717. (2.633).
  • Seyoum, W., Milewski, A., and Durham, M., 2015, Assessment of the Relative Impact of Natural Processes and Human Activities on the Hydrology of the Central Rift Valley Lakes, Ethiopia, Hydrologic Processes, DOI: 10.1002/hyp.10490. (2.696).
  • Ghobani, T., Bellal, S.A., Milewski, A., 2015, A Relevant Ecosystem in Trouble in the Southern Shore of the Mediterranean: The Coastal Zone of Terga, Algeria, Journal of Mediterranean Geography: Special Issue on Dynamics of Coastal Wetlands and Management Issues, In Press.
  • Dailey, D., Sauck, W., Sultan, M., Milewski, A., Ahmed, M., Laton, R., El Kadiri, R., Foster, J., Eckhart, L., Schmidt, C., Al Harbi, T., 2015, Geophysical, Remote Sensing, GIS, and Isotopic Applications for a Better Understanding of the Structural Controls on Groundwater Flow in the Mojave Desert, California, Journal of Hydrology: Regional Studies, 3, 211-232.
  • Milewski, A., Sultan, M., Al-Dousari, A., and Yan, E., 2014, Geologic and Hydrologic Settings for Development of Freshwater Lenses in Arid Lands, Hydrologic Processes, v. 7(1), 3185-3194. (2.696)
  • Abouelmagd, A., Sultan, M., Sturchio, N., Soliman, F., Rashed, M., Ahmed, M., Kehew, A., Milewski, A., and Chouinard, K., 2014, Paleoclimate Record in the Nubian Sandstone Aquifer, Sinai Peninsula, Egypt, Quaternary Research, v. 81(1), 158-167 (2.52).
  • Alharbi, T., Sultan, M., Sefry, S., El Kadiri, R., Ahmed, M., Milewski, A., Abu Abdullah, M., Emil, M., and Chouinard, K., 2013, An Assessment of Landslide Distribution in the Faifa Area, Saudi Arabia Using Remote Sensing and GIS Techniques, Natural Hazards and Earth Systems Sciences, In Press (1.751)
  • Dailey, D., Sauck, W., Sultan, M., Milewski, A., Laton, R., Foster, J., Eckhart, L., Garcia, A., and Chouinard, K., 2013, Geophysical and Remote Sensing Applications for a Better Understanding of the Structural (Faults/Basement Uplifts) Controls on Groundwater Flow in the Lucerne Valley, California, Geological Society of America Bulletin, In Press (3.787).
  • Abouelmagd, A., Krishnamurthy, R.V., Sultan, M., Kehew, A., and Milewski, A., 2013, Paleoclimatic Insight into the Depleted Isotopic Ratios of Fossil Aquifer Waters, Northern Africa, Based on a Rayleigh Distillation Box Model (RDBM), Geophysical Research Letters, In Revision. (3.505)
  • Becker, D., Sultan, M., Milewski, A., Becker, R., Sauck, W., Soliman, F., Rashed, M., Yan, E., Wagdy, A., Ahmed, M., Chouinard, K., and Welton, B., 2012, Integrated Solutions for Hydrologic Investigations in Arid Lands, Geosphere, (v8), 1588-1605. (2.120)
  • Abouelmagd, A., Sultan, M., Milewski, A., Kehew, A., Sturchio, N., Soliman, F., Krishnamurthy, R.V., Cutrim, E., 2012. Towards a better understanding of Palaeoclimatic regimes that recharged the fossil aquifers in North Africa: Inferences from stable isotope and remote sensing data. Palaeogeography, Palaeoclimatology, Palaeoecology, v 329-300, 137-149 pp. (2.390)
  • Sultan, M., Metwally, S., Milewski, A., Becker, D., Ahmed, M., Sauck., W., Soliman, F., Sturchio, N., Wagdy, A., Becker., R,. Welton, B., 2011, Modern Recharge to Fossil Aquifers: Geochemical, Geophysical, and Modeling Constraints, Journal of Hydrology, 403 (1-2), 14-24.
  • Ahmed, M., Sultan, M., Wahr, J., Yan, E., Milewski, A., Sauck, W., Becker, R., and Welton, B., 2011, Integration of GRACE data with Traditional Datasets for a Better Understanding of the Time-dependent Water Partitioning in African Watersheds, Geology, 39 (5), 479-482.
  • Sagintayev, Z., Sultan, M., Khan, S.D., Khan, S.A. Mahmood, E., Yan, E., Milewski, A., and Marsala, P., 2011, A Remote Sensing Contribution to Hydrologic Modeling in Arid and Inaccessible Watershed, Pishin Lora Basin, Pakistan, Hydrologic Processes, 26 (1), 85-99. (2.50)
  • Sultan, M., Yousef, A.F., Metwally, S., Becker, R., Milewski, A., Sauck, W.,  Sturchio, N. C.,  Mohamed, A.M.M.,   Wagdy, A.,   El Alfy, Z.,  Becker, D., Sagintayev, Z.,  El Sayed, M.,  and Welton, B., 2011, Red Sea rifting controls on aquifer distribution: constraints from geophysical, isotopic, and remote sensing data, Geological Society America Bulletin, v. 123 (5-6), 911-924. (3.637)
  • Sagintayev, Z., Sultan, M., Khan, S.D., Khan, S.A., Mahmood, K., Yan, E., Milewski, A., and Chouinard, K., 2011, Identification of Aquifer Types and Potential Well Locations using GIS and Remote Sensing Technologies in the Pishin Lora Basin, Geography Bulletin: Kazakh, v. 1 (32), 117-122. (1.0)
  • Kehew, A., Milewski, A., and Soliman, F., 2010, Reconstructing an extreme flood from boulder transport and rainfall-runoff modeling: Wadi Isla, South Sinai, Egypt, Global and Planetary Change, v. 70, 64-75.
  • Al-Dousari, A., Milewski, A., Ud Din, S., and Ahmed, M., 2010, Remote Sensing Inputs to SWAT Model for Groundwater Recharge Estimates in Kuwait, Advances in Natural and Applied Sciences, 4(1), 71-77.
  • Milewski, A., Sultan, M., Yan, E., Becker, R., Abdeldayem, A.W., and Gelil, K.A., 2009, Remote Sensing Solutions for Estimating Runoff and Recharge in Arid Environments, Journal of Hydrology, 373, 1-14. 
  • Milewski, A., Sultan, M., Markondiah Jayaprakash, S., Balekai, R., and Becker, R., 2009, RESDEM, a Tool for Integrating Temporal Remote Sensing Data for use in Hydrogeologic Investigations, Journal of Computers and Geosciences, 35, 2001-2010.
  • Jones, C., Sultan, M., Yan, E., Milewski, A., Hussein, M., Al-Dousari, A., Al-Kaisy, S., and Becker, R., 2008, Hydrologic Impacts of Engineering Projects on the Tigris-Euphrates System and its Marshlands, Journal of Hydrology, 353, 59-75.
  • Sultan, M., Sturchio, N., El Sefry, S., Milewski, A., Becker, R., and Nasr, I., 2008, Geochemical, Isotopic, and Remote Sensing Constraints on the Origin and Evolution of the Rub Al Khali Aquifer System, Arabian Peninsula, Journal of Hydrology, 356, 70-83.
  • Sultan, M., Wagdy, A., Manocha, N., Sauck, W., Abdel Gelil, K., Youssef  A.F.,  Becker, R., Milewski, A., El Alfy, Z., and Jones, C., 2008, An Integrated Approach for Identifying Aquifers in Transcurrent Fault Systems: The Najd Shear System of the Arabian Nubian Shield, Journal of Hydrology, 349, 475-488.
  • Sultan, M., Yan, E., Sturchio, N., Wagdy, A., Abdel Gelil, K., Manocha, N., Becker, R., and Milewski, A., 2007, Natural Discharge: A Key to Sustainable Utilization of Fossil Groundwater, Journal of Hydrology, 335, 25-36.
  • Milewski, A. and Lesht, B.M., Using Satellite Remote Sensing to Determine the Cause of Whiting Events in Lake Michigan, Journal of Undergraduate Research, US Department of Energy, Vol. V, 2005.
  • Milewski, A., 2014, Book review of “Terrestrial Hydrometeorology “, James Shuttleworth, 2012, 441pgs, Wiley-Blackwell Press, ISBN 0470659378. Groundwater, In press (2.132).
  • Sultan, M., Ahmed, M., Sturchio, N., Yan, E., Milewski, A., Becker, R., Wahr, J., Becker, D., and Chouinard, K., 2013, Assessment of the Vulnerabilities of the Nubian Sandstone Fossil Aquifer; North Africa, In: Climate Vulnerability, Volume 5, Pgs. 311-333.

 

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