

Kaweah River Watershed
Projects

2022
42. Chen, L.*, J. Šimůnek, S.A. Bradford, H. Ajami, M.B. Meles. 2022. A Computationally Efficient Hydrologic Modeling Framework to Simulate Surface-Subsurface Hydrological Processes at the Hillslope Scale. Journal of Hydrology. Accepted
41. Stephens, C. M., L.A. Marshall, F.M. Johnson, H. Ajami, L. Lin, L.E. Band. 2022. Spatial Variation in Catchment Response to Climate Change Depends on Lateral Moisture Transport and Nutrient Dynamics. Water Resources Research, 58, e2021WR030577. https://doi.org/10.1029/2021WR030577
40. Acero Triana, J. S.*, H. Ajami. 2022. Identifying Major Hydrologic Change Drivers in a Highly Managed Transboundary Endorheic Basin: Integrating Hydro-ecological Models and Time-Series Data Mining Techniques. Water Resources Research, 58, e2022WR032281. https://doi.org/10.1029/2022WR032281
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Why the Salton Sea is turning into toxic dust, (UCR press release)
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Washed into Dust, (The poetry of Science)
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California’s Salton Sea is shrinking because of Colorado River water shortage, research finds (The Hill)
39. Wen, H., P.L. Sullivan, S.A. Billings, H. Ajami, A. Cueva, A. Flores, D.R. Hirmas, A.N. Koop, K. Murenbeeld, X. Zhang, L. Li.2022. From Soils to Streams: Connecting Terrestrial Carbon Transformation, Chemical Weathering, and Solute Export Across Hydrological Regimes. Water Resources Research, 58, e2022WR032314. https://doi.org/10.1029/2022WR032314
38. Schreiner-McGraw, A. P.*, H. Ajami, R.G. Anderson, D. Wang. 2022. Integrating Partitioned Evapotranspiration Data into Hydrologic Models: Vegetation Parameterization and Uncertainty Quantification of Simulated Plant Water Use. Hydrological Processes, 36(6), e14580. https://doi.org/10.1002/hyp.14580
37. Bradly, T., H. Ajami, W. Porter. 2022. Ecological Transitions at the Salton Sea: Past, Present and Future, California Agriculture, https://calag.ucanr.edu/archive/?article=ca.2022a0004
36. Zipper, S.C., W.H. Farmer, A. Brookfield, H. Ajami, H.W. Reeves, C. Wardropper, J.C. Hammond, T. Gleeson, J.M. Deines. 2022. Quantifying Streamflow Depletion from Groundwater Pumping: A Practical Review of Past and Emerging Approaches for Water Management, Journal of the American Water Resources Association, https://onlinelibrary.wiley.com/doi/full/10.1111/1752-1688.12998
35. Schreiner-McGraw, A*, H. Ajami.2022. Combined Impacts of Uncertainty in Precipitation and Air Temperature on Simulated Mountain System Recharge from an Integrated Hydrologic Model, Hydrology & Earth System Sciences, https://hess.copernicus.org/preprints/hess-2020-558/
34. Sullivan, P.L., S. Billings, D. Hirmas, L. Li, X. Zhang, S. Ziegler, K. Murenbeeld, H. Ajami, A. Guthrie, K. Singha, D. Giménez, A. Duro, V. Moreno, A. Flores, A. Cueva, Koop, E.L. Aronson, H.R. Barnard, S.A. Banwart, R.M. Keen, A. Nemes, N.P. Nikolaidis, J.B. Nippert, D. Richter, D.A. Robinson, K. Sadayappan, L.F.T. de Souza, M. Unruh, H. Wen. 2022. Embracing the Dynamic Nature of Soil Structure: A Paradigm Illuminating the Role of Life in Critical Zones of the Anthropocene, Earth-Science Reviews, https://doi.org/10.1016/j.earscirev.2021.103873.
33. Cowger, W.C., A. Gray, H. Hapich, J. Osei-Enin, B. Huynh, H. Nogi, S. Singh, S. Brownlee, J. Fong, T. Lok, G. Singer, H. Ajami.2022. Litter Origins, Accumulation Rates, and Hierarchical Composition on Urban Roadsides of the Inland Empire, California, Environmental Research Letters, https://iopscience.iop.org/article/10.1088/1748-9326/ac3c6a/meta
2021
32. Schreiner-McGraw, A.*, H. Ajami.2021. Delayed Response of Groundwater to Multi-year Meteorological Droughts in the Absence of Anthropogenic Management, Journal of Hydrology, https://www.sciencedirect.com/science/article/pii/S0022169421009677?dgcid=coauthor
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Critical groundwater supplies may never recover from drought (UCR press release)
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Researchers discover drought will not allow groundwater recharge (Radio Interview with the Jefferson Exchange)
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Study: Droughts may affect groundwater more than expected (Civil Engineering Magazine, ASCE)
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Water Replenishment District launches plan to clean brackish water in aquifers for drinking (Spectrum News)
2020
31. Schreiner-McGraw, A.*, H. Ajami.2020. Impact of Uncertainty in Precipitation Forcing Datasets on the Hydrologic Budget of an Integrated Hydrologic Model in Mountainous Terrain, Water Resources Research, https://doi.org/10.1029/2020WR027639
30. Kim, S., H. Ajami, A. Sharma. 2020. Using Remotely Sensed Information to Improve Vegetation Parameterization in a Semi-distributed Hydrological Model (SMART) for Upland Catchments in Australia, Remote Sensing, http://dx.doi.org/10.3390/rs12183051
29. Stephens, C. M., L.A. Marshall, F.M. Johnson, L. Lin, L.E. Band, and H. Ajami. 2020. Is Past Variability a Suitable Proxy for Future Change? A Virtual Catchment Experiment, Water Resources Research, 56, https://doi.org/10.1029/2019WR026275
28. Schreiner-McGraw*, A., E.R. Vivoni, H. Ajami, O.E. Sala, H.L. Throop, D.P.C. Peters.2020. Woody Plant Encroachment has a Larger Impact than Climate Change on Dryland Water Budgets, Scientific Reports, https://doi.org/10.1038/s41598-020-65094-x
2019
27. Schreiner-McGraw*, A., H. Ajami, E. Vivoni.2019. Extreme Weather Events and Transmission Losses in Arid Streams, Environmental Research Letters, doi: 10.1088/1748-9326/ab2949
26. Tang, Y., L. Marshall, A. Sharma, H. Ajami, D.J. Nott. 2019. Ecohydrologic Error Models for Improved Bayesian Inference in Remotely Sensed Catchments, Water Resources Research, https://doi.org/10.1029/2019WR025055
25. Fan, Y., M. Clark, D. M. Lawrence, S. Swenson, L. E. Band, S. L. Brantley, P. D. Brooks, W. E. Dietrich, A. Flores, G. Grant, J. W. Kirchner, D. S. Mackay, J. J. McDonnell, P. C. D. Milly, P. L. Sullivan, C. Tague, H. Ajami, N. Chaney, A. Hartmann, P. Hazenberg, J. McNamara, J. Pelletier, J. Perket, E. Rouholahnejad-Freund, T. Wagener, X. Zeng, E. Beighley, J. Buzan, M Huang, B. Livneh, B. P. Mohanty, B. Nijssen, M. Safeeq, C. Shen, W. van Verseveld, J. Volk, D Yamazaki. 2019. Hillslope Hydrology in Global Change Research and Earth System Modeling, Water Resources Research, https://doi.org/10.1029/2018WR023903
2018
24. Tang, Y., L. Marshall, A. Sharma, H. Ajami. 2018. Modelling Precipitation Uncertainties in a Multi-objective Bayesian Ecohydrological Setting, Advances in Water Resources, https://doi.org/10.1016/j.advwatres.2018.10.015
23. Ajami, H., A. Sharma. 2018. Disaggregating Soil Moisture to Finer Spatial Resolutions - A Comparison of Alternatives, Water Resources Research, https://doi.org/10.1029/2018WR022575
22. Sandoval, E., G. Baldo, N., Núñez, J., Oyarzún, J.P. Fairley, H. Ajami, J.L. Arumí, E. Aguirre, H. Maturana, R. Oyarzún. 2018. Groundwater Recharge Assessment in a Rural, Arid, Mid-mountain Basin in North-Central Chile, Hydrological Sciences Journal, 63(13-14),1873-1889, https://doi.org/10.1080/02626667.2018.1545095
21. Khan, U., H. Ajami, N.K. Tuteja, A. Sharma, S. Kim. 2018. Catchment Scale Simulations of Soil Moisture Dynamics Using an Equivalent Cross-Section based Hydrological Modelling Approach, Journal of Hydrology. https://doi.org/10.1016/j.jhydrol.2018.07.066
20. Tang, Y., L. Marshall, A. Sharma, H. Ajami. 2018. A Bayesian Alternative for Multi-objective Ecohydrological Model Specification, Journal of Hydrology, https://doi.org/10.1016/j.jhydrol.2017.07.040
2017
19. Niraula, R., T. Meixner, F. Dominguez, N. Bhattarai, M. Rodell, H. Ajami, D. Gochis, C. Castro. 2017. How Might Recharge Change Under Projected Climate Change in the Western US?, Geophysical Research Letters, doi:10.1002/2017GL075421
18. Niraula, R., T, Meixner, H. Ajami, M. Rodell, D. Gochis, C.L. Castro. 2017. Comparing Potential Recharge Estimates from Three Land Surface Models across the Western US, Journal of Hydrology, http://dx.doi.org/10.1016/j.jhydrol.2016.12.028
17. Gemitzi, A., H. Ajami, H. Richnow. 2017. Developing Empirical Monthly Groundwater Recharge Equations based on Modeling and Remote Sensing Data - Modeling Future Groundwater Recharge to Predict Potential Climate Change Impacts, Journal of Hydrology, http://dx.doi.org/10.1016/j.jhydrol.2017.01.005
16. Ajami, H., A. Sharma, L.E. Band, J.P. Evans, N. K. Tuteja, G.E. Amirthanathan, M.A. Bari. 2017. On the Non-stationarity of Hydrological Response in Anthropogenically Unaffected Catchments: An Australian Perspective, Hydrology and Earth System Sciences, doi:10.5194/hess-21-281-2017
2016
15. Ajami, H., U. Khan, N.K. Tuteja, A. Sharma. 2016. Development of a Computationally Efficient Semi-distributed Hydrologic Modeling Application for Soil Moisture, Lateral Flow and Runoff Simulation, Environmental Modelling & Software. doi: 10.1016/j.envsoft.2016.09.002
14. Meixner, T., A. Manning, D. Stonestrom, D.M. Allen, H. Ajami, K. Blasch, A. Brookfield, C.L. Castro, J.F. Clark, D. Gochis, A. Flint, K. Neff, R. Niraula, M. Rodell, B. Scanlon, K. Singha, M. Walvoord. 2016. Implications of Prospective Climate Change for Groundwater Recharge in the Western United States, Journal of Hydrology, doi:10.1016/j.jhydrol.2015.12.027
13. Naseem, B., H. Ajami, Y. Liu, I. Cordery, A. Sharma. 2016. Multi-objective Assessment of Three Remote Sensing Vegetation Products for Streamflow Prediction in a Conceptual Ecohydrological Model, Journal of Hydrology, doi:10.1016/j.jhydrol.2016.10.038
2015
12. Ajami, H., M.F. McCabe, J.P. Evans. 2015. Impacts of Model Initialization on an Integrated Surface Water–Groundwater Model, Hydrological Processes, 29(17):3790-3801, doi: 10.1002/hyp.10478
11. Naseem, B., H. Ajami, I. Cordery, A. Sharma. 2015. A Multi-objective Assessment of Alternate Conceptual Ecohydrological Models, Journal of Hydrology, 529(3):1221-1234, doi:10.1016/j.jhydrol.2015.08.060
10. Graham, P., M. Andersen, M.F. McCabe, H. Ajami, A. Baker, I. Acworth. 2015. To What Extent Do Long-Duration High-Volume Dam Releases Influence River-Aquifer Interactions? A Case Study in New South Wales, Australia, Hydrogeology Journal, 23: 319-334, doi: 10.1007/s10040-014-1212-3
2014
9. Ajami, H., J.P. Evans, M.F. McCabe, S. Stisen. 2014. Technical Note: Reducing the Spin-up Time of Integrated Surface Water–Groundwater Models, Hydrology and Earth System Sciences, 18, 5169-5179, doi: 10.5194/hess-18-5169-2014
8. Ajami, H., M.F. McCabe, J.P. Evans, S. Stisen. 2014. Assessing the Impact of Model Spin-up on Surface Water-Groundwater Interactions Using an Integrated Hydrologic Model, Water Resources Research, 50: doi:10.1002/2013WR014258
7. Khan, U., N. Tuteja, H. Ajami, A. Sharma. 2014. An Equivalent Cross-Sectional Basis for Semi-Distributed Hydrological Modeling, Water Resources Research, 50, doi:10.1002/2013WR014741
2012
6. Ajami, H., T. Maddock III, T. Meixner, J.F. Hogan, D.P. Guertin.2012. RIPGIS-NET: A GIS Tool for Riparian Groundwater Evapotranspiration in MODFLOW, Ground Water, 50(1): 154-158, doi:10.1111/j.1745-6584.2011.00809.x
5. Abramowitz, G., L. Pouyanne, H. Ajami. 2012. On the Information Content of Surface Meteorology for Downward Atmospheric Long-wave Radiation Synthesis, Geophysical Research Letters, 39: doi:10.1029/2011GL050726
4. Ajami, H., T. Meixner, F. Dominguez, J.F. Hogan, T. Maddock III. 2012. Seasonalizing Mountain System Recharge in Semi-Arid Basins-Climate Change Impacts, Ground Water, 50(4): 585-597, doi:10.1111/j.1745-6584.2011.00881.x
Prior to 2011
3. Ajami, H., P.A. Troch, T. Maddock III, T. Meixner, C. Eastoe. 2011. Quantifying Mountain Block Recharge by Means of Catchment-Scale Storage-Discharge Relationship, Water Resources Research, 47, W04504, doi:10.1029/2010WR009598
2. Ajami, H., T. Meixner, T. Maddock III, J.F. Hogan, D.P. Guertin.2011. Impact of Land-Surface Elevation and Riparian Evapotranspiration Seasonality on Groundwater Budget in MODFLOW Models, Hydrogeology Journal, 19:1181-1188, doi:10.1007/s10040-011-0743-0
1. Stromberg, J.C., M.G.F. Tluczek, A.F. Hazelton, H. Ajami.2010. A Century of Riparian Forest Expansion Following Extreme Disturbance: Spatio-Temporal Change in Populus/Salix/Tamarix Forests Along the Upper San Pedro River, Arizona, USA, Forest Ecology and Management, 259 (6):1181-1189, doi:10.1016/j.foreco.2010.01.005
Book Chapters
1. Ajami, H. 2021. Geohydrology: Global Hydrological Cycle, In: Alderton, David; Elias, Scott A. (eds.) Encyclopedia of Geology, 2nd edition, vol.[6], pp. 393-398. United Kingdom: Academic Press, https://doi.org/10.1016/B978-0-12-409548-9.12387-5
2. Ajami, H.2021. Geohydrology: Groundwater, In: Alderton, David; Elias, Scott A. (eds.) Encyclopedia of Geology, 2nd edition, vol.[6], pp. 408-415. United Kingdom: Academic Press, https://doi.org/10.1016/B978-0-12-409548-9.12388-7