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Our Publications


  1. Tebebu, Y.T, H.K. Bayabil, T. Steenhuis. (2020). Can Degraded Soils Be Improved by Ripping Off the Hardpan and Liming? A Field Experiment in The Humid Ethiopian Highlands. Land Degradation & Development.

  2. Tiantian Li; Zhaohui Tong; Bin Gao; Yuncong Li; Ashley Smith; H.K. Bayabil. 2020. Polyethyleneimine Modified Biochar for Enhanced Phosphate Adsorption. Environmental Science and Pollution Research. (in print)

  3. Bayabil, H.K., A. Fares, H.O. Sharif, D.T. Ghebreyesus, and H.A. Moreno. (2019). Effects of Spatial and Temporal Data Aggregation Scales on the Performance of the Multi-Radar Multi-Sensor System. Journal of American Water Resources Association. DOI:

  4. Bayabil, H.K., Y.T. Dile, T.Y. Tebebu, T.A. Engda, and T.S. Steenhuis. 2019. Evaluating Infiltration Models and Pedotransfer Functions: Implications for Hydrologic Modeling. Geoderma 338 (March): 159–69.

  5. Achenafi Teklay, Y.T Dile, D. H Asfaw, H.K. Bayabil, K. Sisay. (2019). Impacts of land surface model and land use data on WRF model simulations of rainfall and temperature over Lake Tana Basin, Ethiopia. Heliyon. 5(9) e02469.

  6. Kebrom, T.H., S. Woldesenbet, H.K. Bayabil, M. Garcia, M. Gao, P. Ampim, R. Awal, and A. Fares. 2019. Evaluation of Phytotoxicity of Three Organic Amendments to Collard Greens Using the Seed Germination Bioassay. Environmental Science and Pollution Research, January.

  7. Awal, R., A. Fares, and H.K. Bayabil. 2018. Assessing Potential Climate Change Impacts on Irrigation Requirements of Major Crops in the Brazos Headwaters Basin, Texas. Water 10 (11): 1610.

  8. Dile Y., S. Tekleab, E. Ayana, S.G. Gebrehiwot, A. Worqlul, Y. T. Yimam, H.K. Bayabil, S. Tilahun, P. Daggupati, L. Karlberg, R. Srinivasan. (2018). Advances in water resources research in the Upper Blue Nile basin and the way forward: a review. Journal of Hydrology. 560, 407-423.

  9. Bayabil, H.K., B.Yitaferu, and T.S. Steenhuis. (2017). Shift from Sediment Transport Limitation to Supply Limitation with Monsoon Progression in the Upper Blue Nile Basin, Earth Surface Processes and Landforms. 42 (9)1317-1328. DOI:10.1002/esp.4103.

  10. Fares A., H.K. Bayabil, M. Zekri, Mattos, and R. Awal. (2017). Potential climate change impacts on citrus water requirement across major producing areas in the world. Journal of Water and Climate Change. 8(4) 576-592. doi: 10.2166/wcc.2017.182.

  11. Fares, A., A. Bensley, H.K. Bayabil, R. Awal, S. Fares, H. Valenzuela, and F. Abbas. (2017). Carbon Dioxide Emission in Relation with Irrigation and Organic Amendments. Journal of Environmental Science and Health, Part B. DOI: 10.1080/03601234.2017.1292094.

  12. Lal R., R. H. Mohtar, A. T. Assi, R. Ray, H.K. Bayabil, and M. Jahn. (2017). Soil as a Basic Nexus Tool: Soils at the center of the Food-Energy-Water Nexus. Journal of Current Sustainable/Renewable Energy Reports. DOI 10.1007/s40518-017-0082-4.

  13. Guzman C.D., M. Elkamil, T.Tebebu, H.K. Bayabil., S. Tilahun, B. Yitaferu, T. Rientjes, T.S. Steenhuis. (2017). Modeling Discharge and Sediment Concentrations after Landscape Interventions in a Humid Monsoon Climate: The Anjeni Watershed in the Highlands of Ethiopia. Hydrological Processes. 31(6)1239-1257. DOI: 10.1002/hyp.11092.

  14. Tebebu Y.T, H.K. Bayabil, C.R. Stoof, S.K. Giri, A.A. Gessess, S.A. Tilahun, T.S. Steenhuis. (2017). Characterization of Degraded Soils in the Humid Ethiopian Highlands.  Land Degradation & Development. 28(7) 1891-190. DOI: 10.1002/ldr.2687.

  15. Bayabil, H.K., T.Y. Tebebu, C.R. Stoof, and T.S. Steenhuis. (2016). Effects of a deep-rooted crop and soil amended with charcoal on spatial and temporal runoff patterns in a degrading tropical highland watershed, Hydrol. Earth Syst. Sci., 20, 875-885, doi: 10.5194/hess-20-875-2016.

  16. Bayabil, H.K., C.R. Stoof., C. Mason., B.K. Richards., and T. S. Steenhuis. (2016). Nitrous Oxide and Methane Fluxes from Smallholder Farms: A Scoping Study in the Anjeni Watershed. Climate. 4 (4), 62; doi: 10.3390/cli4040062.

  17. Ripendra Awal, H.K. Bayabil, and A. Fares. (2016). Analysis of Potential Future Climate and Climate Extremes in the Brazos Headwaters Basin, Texas. Water 2016, 8(12), 603; doi: 10.3390/w8120603.

  18. Fares, A., R. Awal, and H.K. Bayabil. (2016). Soil Water Content Sensor Response to Organic Matter Content under Laboratory Conditions. Sensors. 16(8), 1239; doi: 10.3390/s16081239.

  19. Ghebreyesus D., M. Temimi, A. Fares, H.K. Bayabil. (2016). A Multi-Satellite Approach for Water Storage Monitoring in an Arid Watershed. Geosciences 6(3), 33; doi: 10.3390/geosciences6030033.

  20. Bayabil, H.K., Stoof, C.R., Lehmann, J.C., Yitaferu, B., Steenhuis, T.S. (2015). Assessing the potential of biochar and charcoal to improve soil hydraulic properties in the humid Ethiopian Highlands: The Anjeni watershed. Geoderma 243, 115–123. doi:10.1016/j.geoderma.2014.12.015.

  21. Bayabil, H.K., Tigist Y. Tebebu, C. Stoof, Birru Yitaferu, and T. S. Steenhuis. (2015). Spatial and Temporal Runoff Processes in the Degraded Ethiopian Highlands.  Hydrol.  Earth Syst.  Sci. Discuss.19, 1–25, 2015, doi: 10.5194/hessd-19-1-2015.

  22. Tebebu Y.T, T.S. Steenhuis, D.C. Dagnew, C.D Guzman, H.K. Bayabil, A.D.Zegeye, A.S. Collick, S. Langan, C. McAllister, E.J. Langendoen and S.A. Tilahun. (2015).  Improving efficacy of landscape interventions in the (sub) humid Ethiopian highlands. Hypothesis & Theory, Frontiers in Earth Science. Hydrosphere. 3:49. doi: 10.3389/feart.2015.00049.

  23. Bayabil, H. K., S.A. Tilahun, .A.S. Collick, B. Yitaferu, T.S. Steenhuis (2010). Are Runoff Processes Ecologically or Topographically Driven in the (Sub) Humid Ethiopian Highlands? The Case of the Maybar Watershed. Ecohydrology. 3: 457-466. DOI: 10.1002/eco.170.

  24. Steenhuis, T.S., A.S. Collick, Z.M. Easton, E.S. Leggesse, H.K. Bayabil, E.D. White, S.B. Awulachew, E. Adgo, and A.A. Ahmed. (2009). Predicting discharge and erosion for the Abay (Blue Nile) with a simple model. Hydrol. Proc. 23: 3728-3737. doi: 10.1.1002/hyp.751.

Book Chapter

  1. Ghebreyesus D., M. Temimi, A. Fares, H.K. Bayabil. (2016). Remote sensing applications for monitoring water resources in the UAE using Lake Zakher as a water storage gauge. In A.  Fares (ed.), Advances in Water Security: Emerging Issues in Groundwater Resources. Springer International Publishing, New York, USA.  DOI: 10.1007/978-3-319-32008-3.

  2. Engda, T.A., H.K. Bayabil, E.S. Legesse, E. K. Ayana, S.A. Tilahun, A.S. Collick, Z.M. Easton, A. Rimmer, S.B. Awulachew, and T.S. Steenhuis. (2011). Watershed hydrology of the (semi) humid Ethiopian Highlands. In Nile River: Hydrology, Climate and Land Use. 145-162. A. Melesse, ed., New York, NY: Springer Science.

Selected Abstracts & Conference Proceedings

  1. Getachew F., C. Nendel, T. Stella, M. Berg, M. Lana, and H.K. Bayabil.  2020. Modeling Effects of Climate Change and Variability on Sorghum Yield in Ethiopia.  UF Water Institute Conference. February 25-26, 2020. University of Florida, Gainesville, Florida.

  2. Bayabil H.K., and Y.T. Dile.  2019. Effects of Spatial Data Resolution on Hydrologic Simulations.  FL-ASABE, Delray Beach, Florida.

  3. Bayabil H.K., L. Vasquez, J. Lomeli, and P. Martin.  2019. Performance of ET-Based Irrigation Controller in Reducing Outdoor Water Use.  FL-ASABE, Delray Bearch, Florida.

  4. Vasquez, J. Lomeli, P. Martin, and H.K. Bayabil.  2019. Phase II: Fisher Island—Reducing Outdoor Water Use in a Residential Island Community.  UF Landscaping Summit, Gainesville, Florida.

  5. Bradley K., E. Williams, D. Bailey, M. Moussavi, H.K. Bayabil, A. El-Hassan, R.Awal, A. Fares, Deland Myers, Javad Barouei. 2019. Organic Amendments Influence the Rhizosphere and Phyllosphere Microbiota Profiles of Collard Greens Grown in Southeast Texas. IAFP 2019 Annual Meeting. July 22, 2019. Louisville, Kentucky

  6. Ripendra A., A. Elhassan, A. Fares, S. Woldesenbet, R. Ray, H.K. Bayabil, P. Ampim, E. Risch, R. Griffin, and H. Habibi. 2018. Soil Moisture and Nutrient Dynamics in the Root Zone of Collard Greens in Different Organic Amendment Types and Rates. Irrigation Show and Education Conference. December 3 – 7, 2018, Long Beach, CA.

  7. Bayabil, H.K., Y.T. Dile, T.Y. Tebebu, T.A. Engda, and T.S. Steenhuis. 2018. Evaluating Multiple Soil Data Sources for Hydrologic Modeling. American Geophysical Union Fall Meetings. Dec. 11-15, Washington DC.

  8. Bayabil H.K., H. Sharif, A. Fares., R. Awal, and E. Risch. Performance of the Multi-Radar Multi-Sensor System over the Lower Colorado River, Texas. American Geophysical Union Fall 2017 Meeting, New Orleans, LA, December 11-15, 2017

  9. Ali F., Awal, R., H.K. Bayabil. and El Hassan, A.: Developing soil calibration equation for Sentek’s new Drill & Drop™ capacitance probe, ASA, CSSA & SSSA International Annual Meeting, October 22-55, 2017, Tampa, FL (submitted).

  10. Bayabil H.K., A. Fares, and R. Awal, A. Hassan, and K. Y.A.M. Kablan. (2016). Streamflow Prediction under Potential Climate Change Scenarios in the Lower Colorado River Basin. Associations of 1890 Research Directors (ARD) Research Symposium 2017, April 1-4, 2017, Atlanta, Georgia.

  11. Bayabil H.K., A. Fares, and R. Awal, A. Hassan, and K. Y. A. M. Kablan. (2016). Assessing Climate Change Effects on Surface Water Resources in The Lower Basin Watershed of The Colorado River. The Geological Society of America South-Central Section - 51st Annual Meeting, March 13-17, 2017, San Antonio, TX, USA.

  12. Fares A., H.K. Bayabil, and R. Awal. (2016). Water, Energy, and CO2 Footprints of Citrus Production in Texas, Florida, and California under a Changing Climate. Association of 1890 Research Directors (ARD) Research Symposium 2017, April 1-4, 2017, Atlanta, Georgia.

  13. El Hassan A., R. Awal, H.K. Bayabil, R. L. Ray, E. Risch, and A. Fares. (2016). Modeling The Effect of Landuse Change on Hydrologic Response of a Semi Urbanized Watershed Using a Physically-Based Distributed Model. The Geological Society of America South-Central Section - 51st Annual Meeting, March 13-17, 2017, San Antonio, TX, USA.

  14. El Hassan A., E. Risch, R. Awal, R. L. Ray, H.K. Bayabil, and A. Fares. (2016). Lumped and Physically Based Model Performances in Simulating The Runoff Response from Urbanized Watershed due to Landuse Change in The Hill Country, Texas. Association of 1890 Research Directors (ARD) Research Symposium 2017, April 1-4, 2017, Atlanta, Georgia.

  15. Ali S., H.K. Bayabil., A. Fares., and R. Awal. (2016). Current and Future Water, Energy, and CO2 Footprints of Citrus Production in Brownsville, Texas. The 13th Annual Texas A&M University System Pathways Student Research Symposium, Prairie View A&M University, Prairie View, TX.

  16. Kablan K.Y.A. M., H.K. Bayabil., R. Awal., and A. Fares. (2016). Projection of Climate Extremes in the Brazos Headwaters Basin, Texas.  The 13th Annual Texas A&M University System Pathways Student Research Symposium, Prairie View A&M University, Prairie View, TX.

  17. James A., A. Fares, H.K. Bayabil, R. Awal, and Y. Cherif. (2016). Evaluation of the Electromagnetic Induction Sensor, Em38-Mk2, In Monitoring Soil Moisture. The 13th Annual Texas A&M University System Pathways Student Research Symposium, Prairie View A&M University, Prairie View, TX.

  18. Fares A., H.K. Bayabil, M. Zekri and R. Awal. (2016). Impacts of Climate Change on Citrus Water Requirements across Major Citrus Producing Areas in the World. International Citrus Congress, Foz Do Iguaçu, PR – Brazil.

  19. Ghebreyesus D., M. Temimi, A. Fares, H.K. Bayabil. (2016). Monitoring Water Resources from Space in an Arid Watershed of Al Ain City. EGU General Assembly Conference Abstracts, Vienna, Austria.

  20. Mbia, M., R. Awal, H.K. Bayabil, and A. Fares. (2015). Irrigation Water Requirements for different Crops in Prairie View Texas, 12th Annual Texas A&M University System Pathways, Student Research Symposium, Texas A&M University-Corpus Christi, Corpus Christi, TX.

  21. Bayabil, H.K., and T. S. Steenhuis. (2015). Understanding Hillslope Hydrology for Planning Effective Landscape Interventions in the Ethiopia Highlands. Soil and Water Lab Seminar Series, Cornell University, Ithaca, NY.

  22. Steenhuis Tammo, T.Y. Tebebu, G.K. Ayale, C.Guzman, H.K. Bayabil, A. Zegeye, M. Mogus, D. Chanie, C. Stoof, and S. A.Tilahun. (2014). Prioritizing landscape interventions in the Ethiopian highlands. EGU General Assembly,  27 April – 02 May 2014, Vienna, Austria.

  23. Bayabil, H.K., J.C. Lehmann, B. Yitaferu, C. Stoof, and T. S. Steenhuis. (2013). Spatial Variability of Soil Physical and Hydraulic Properties Affecting Runoff and Moisture Retention Characteristics of Tropical Soils: The Case of Anjeni Watershed in Proceedings of Science and Technology towards the Development of East Africa, Bahir Dar University Institute of Technology, Bahir Dar, Ethiopia.

  24. Bayabil, H.K., J.C. Lehmann, B. Yitaferu, Stoof, C. and Steenhuis, T.S. Hydraulic properties of clay soils as affected by biochar and charcoal amendments. In: Wolde Mekuria. (ed). (2013). Rainwater management for resilient livelihoods in Ethiopia: Proceedings of the Nile Basin Development Challenge Science Meeting, Addis Ababa, NBDC Technical Report, International Livestock Research Institute, Nairobi, Kenya.

  25. Steenhuis, T.S., S.A. Tilahun, C. MacAlister, E.K. Ayana, T.Y. Tebebu1, H.K. Bayabil1, A.D. Zegeye, A.W. Worqlul. 2012. Scaling-up watershed discharge and sediment concentrations to regional scale: The Blue Nile Basin. AGU Fall Meeting, San Francisco, 3-7 December 2012.

  26. Steenhuis, T.S., H.K. Bayabil, T. Ashagrie, E. Sime, B. Brook, A.S. Collick, S.B. Awulachew, Y.G. Selassie, A. Ahmed, and Z.M. Easton. (2009). Modeling Discharge Erosion and Sedimentation in the Upper Blue Nile. International water management institute (IWMI) upstream-downstream workshop, Addis Ababa, Ethiopia.

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