March 5, 2014 - Gurdak chairs sessions at the 2014 NEXUS Conference on the "Human-environmental security in Asia-Pacific Ring of Fire: Water-Energy-Food Nexus", University of North Carolina, Chapel Hill, NC. Session details here.
January 29, 2014 - New book chapter publication: Gurdak, J.J., 2014, Chapter 8. Groundwater vulnerability, In Eslamian, S. (Ed.). Handbook of Engineering Hydrology, Volume 3: Environmental Hydrology and Water Management. 33 p., CRC Press.
December 27, 2013 - New publication in Water Resources Research: Newcomer, M.E., Gurdak, J.J., Sklar, L., and Nanus, L., 2013, Urban recharge beneath low impact development and the effects of climate variability and change, Water Resources Research, doi:10.1002/2013WR014282.
November 25, 2013 - New publication in EOS: Taniguchi, M., Allen, D., and Gurdak, J.J., 2013, Optimizing the Water-Energy-Food nexus in the Asia-Pacific Ring of Fire, EOS, vol. 94(47), p. 435, doi:10.1002/2013EO470005.
August 7, 2013 - New NSF Hydrologic Sciences funded project (2013-2016): RUI: Groundwater teleconnections with interannual to multidecadal climate variability
June 19, 2013 - New publication in Journal of Hydrology: Klove, Ala-Aho, Bertrand, Gurdak, Kupfersberger, Kvaener, Muotka, Mykra, Preda, Rossi, Uvo, Velasco, and Pulido-Velazquez, 2013, Climate change impacts on groundwater and dependent ecosystems. Journal of Hydrology.
May 24, 2013 - Congratulations to hydro student Ryan Corbett (MS, Geosciences) as recipient of the 2013 Pestrong Graduate Teaching Assistant Award.
May 22, 2013 - Hydro student Elzie Velasco was awarded the prestigious $10,000 ARCS Scholarship. The ARCS Foundation advances sciences and technology in the United States by providing financial awards to academically outstanding U.S. citizens studying to complete degrees in science, engineering, and medical research. Elzie's research explores the controls of interannual to multidecadal climate variability on groundwater levels and recharge rates to the Principal Aquifers of the United States. Results of her research are important because time-varying recharge rates can be used to greatly improve local to national-scale groundwater sustainability studies. Congratulations Elzie!
May 17, 2013 - Congratulations to hydro student Ryan Corbett (MS, Geosciences) as a winner of the SFSU COSE Student Project Showcase.
May 15, 2013 - Congratulations to hydro students Mays Danfoura, Elzie Velasco, and Mike Wrigley (MS, Geosciences) as recipients of the 2013 Dawdy Hydrology Research Grant.
November 26, 2012 - New publication in Nature Climate Change:
Taylor et al., Groundwater and climate change, doi:10.10.1038/nclimate1744.
July 5, 2012 - New publication in Climate Science and Policy:
Gurdak, J.J., 2012, Climate change goes underground: Implications for groundwater. Climate Science and Policy, July 5, 2012, (Invited contribution).
June, 2012 - New publication in Environmental Pollution:
Nanus, L., Clow, D.W., Saros, J.E., Stephens, V.C., Campbell, D.H., 2012, Mapping critical loads of nitrogen deposition for aquatic ecosystems in the Rocky Mountains, USA, Environmental Pollution
May, 2012 - New publication in Environmental Science & Technology:
Gurdak, J.J., and Qi, S.L., 2012, Vulnerability of recently recharged groundwater in principal aquifers of the United States to nitrate contamination, Environmental Science and Technology, doi:10.1021/es300688b.
April 2, 2012 - Congratulations to Hydro student Michelle Newcomer (MS, 2012 anticipated) for her acceptance into the PhD program at UC Berkeley, Department of Civil and Environmental Engineering!
March 14, 2012 - BBC article about Jason Gurdak's research on climate change and groundwater. Read here: Cambio climatico: el agua subterranea sera cada vez mas vital
March 13, 2012 - Professor's groundwater research grains international attention. Read more here.
March 13, 2012, 11:00 to 13:00 - Jason Gurdak invited panelist at the 6th World Water Forum session TSG 3.3.2 "Coping with uncertainties related to climate and global change in water planning and management", Marseille, France. Links to Session Program here. Session Flyer here.
March 12, 2012 - Climate change may reduce future use of groundwater. Read more here.
March 5, 2012 - UN scientists warn of increased groundwater demands due to climate change. Read more here.
February, 2012 - Congratulations to former Hydro student Amber Kuss (MS, 2011) for her acceptance into the PhD program in the Environmental Studies Department at U.C. Santa Cruz!
January, 2012 - Background arsenic soil concentration quantified:
Findings from Dylan Duverge's recent (2011) MS thesis is featured in the San Francisco Bay Regional Water Quality Control Board, Executive Officer's Report, January 2012. Dylan's thesis provides the first regional estimate of background arsenic concentrations (11 mg/kg) in the San Francisco Bay Region.
January, 2012 - Most downloaded Journal of Hydrology article in last 90 days:
Green, T.R., Taniguchi, M., Kooi, H., Gurdak, J.J., Allen, D.M., Hiscock, K.M., Treidel, H., and Aureli, A., 2011, Beneath the surface of global change: Impacts of climate change on groundwater, Journal of Hydrology, doi:10.1016/j.jhydrol.2011.05.002.
January, 2012 - Remote Sensing Technologies & Applications (HydroVisions page 11):
Hydro MS student Michelle Newcomer mentioned in HydroVision (California Groundwater Resource Association) for her presentation on estimating groundwater storage change in the Central Valley using GRACE (Gravity Recovery and Climate Experiment) satellite data.
January, 2012 - Climate Change/Enhancing Groundwater Reserves (HydroVisions pg 12):
Jason Gurdak mentioned in HydroVision (California Groundwater Resource Association) for his presentation on climate variability effects on groundwater in the Central Valley and Basin and Range aquifes and the importance toward better management and planning.
December, 2011 - New book and book chapter in print:
Treidel, H., Martin-Bordes, J.J., and Gurdak, J.J.,2011. Climate change effects on groundwater resources: A global synthesis of findings and recommendations, IAH - International Contributions to Hydrogeology, Taylor and Francis publishing.
Gurdak, J.J., McMahon, P.B., and Bruce, B.W., 2011, Vulnerability of groundwater quality to human activity and climate change and variability, High Plains aquifer, USA, In Treidel, H., Martin-Bordes, J.J., and Gurdak, J.J., (Eds.). Climate change effects on groundwater resources: A global synthesis of findings and recommendations, IAH - International Contributions to Hydrogeology, Taylor and Francis publishing.
September 12, 2011 - New article by Amber Kuss, a recent MS graduate (2011) of our Hydrogeology group, in HydroVisions, a publication of the Groundwater Resources Association of California:
July, 2011 - New paper about climate variability and groundwater in England:
Holman, I., Rivas-Casado, M., Bloomfield, J., and Gurdak, J.J., 2011, Identifyin non-stationary groundwater level response to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence, Hydrogeology Journal, doi:10.1077/s10040-011-075509.
July, 2011 - New review paper about climate climate and groundwater:
Green, T.R., Taniguchi, M., Kooi, H., Gurdak, J.J., Allen, D.M., Hiscock, K.M., Treidel, H., and Aureli, A., 2011, Beneath the surface of global change: Impacts of climate change on groundwater, Journal of Hydrology, doi:10.1016/j.jhydrol.2011.05.002
May 19, 2011 – Congratulations to hydrogeology student Ryan Corbett (MS, Geosciences) as recipient of the 2011 Dawdy Hydrology Research Grant.
April 14, 2011 – Congratulations to hydrogeology student Michelle Newcomer (MS, Geosciences) as recipient of a 2011 Geological Society of America (GSA) Graduate Student Research Grant.
March 9, 2011 – Congratulations to hydrogeology student Amber Kuss (MS, Geosciences) for winning the Physical and Mathematical Sciences category of the 2011 SFSU Student Research Competition. Amber will represent SFSU later this year in Fresno at the CSU-wide competition. The title of her talk was "Effects of climate variability on recharge in regional aquifers of the United States".
March 4, 2011 – Congratulations to hydrogeology student Michelle Newcomer (MS, Geosciences) as recipient of the 2011 G.A. Harris Research Instrumentation Fellowship. Michelle will use Decagon Devices field instruments to quantify the quantity and quality of infiltration beneath rain gardens and subsequent recharge to the Westside Basin aquifer in San Francisco.
December 13-17, 2010 – Jason Gurdak is co-chair of the session H08: Water-resource science and strategies for adaptaion to climate variability and change, American Geophysical Union (AGU) Fall Meeting 2010, San Francisco, California.
September 29, 2010 – Hydrogeology student and NASA Ames DEVELOP team member Michelle Newcomer (MS Geosciences) is quoted in NASA Ames news article: NASA Ames Scientists Train the Next Generation of Earth Explorers. "I heard about the internship program while attending San Francisco State University, said Michelle Newcomer. "I applied because it sounded really exciting. I wanted to apply my geographic information system (GIS) and remote sensing skills to real-world projects."
June 18, 2010 – Gurdak and hydrogeology group awarded $11k from SFSU Office of Research and Sponsored Projects (ORSP) Funding Opportunities Announcement: Facilitating Research at San Francisco University (ORSP FOA 2010-11). The project titled "Preparing the SF State Community to Understand Climate Change Effects on Groundwater Resources in San Francisco" and will support the installation of a long-term research and teaching "Hydroclimatology Field Lab" site on campus to study the effects of climate change and variability on recharge and contamination transport to the Westside Basin Aquifer located beneath SF State. Michelle Newcomer will use data from the Hydroclimatology Field Lab for her MS thesis research.
June 13-15, 2010 – National Center for Atmospheric Research (NCAR), Advanced Study Program, Junior Faculty Forum on Future Scientific Directions (2010). Gurdak co-chair for session #1: Climate and Water: Advancing adaptation science and strategies for water-resource vulnerability from climate variability and change. Additional info posted on Climate and Water Wiki page.
June, 2010 – New (invited) article by Gurdak in Prairie Fire (a Great Plains regional journal of public policy and the arts): "The High Plains aquifer, part two"
May, 2010 – New (invited) article by Gurdak in Prairie Fire (a Great Plains regional journal of public policy and the arts): "The High Plains aquifer, part one"
April, 2010 – Congratulations to hydrogeology student Michelle Haskins (BS, Geology) for selection to the 2010 National Science Foundation (NSF) Research Experience for Undergraduates (REU) at SUNY New Paltz, New York. This summer Michelle will work with other undergraduate researchers on a comprehensive approach to watershed characterization of the source water for New York City. Details about NSF REU SUNY New Paltzt: http://www.newpaltz.edu/geology/nsf-reu/
April, 2010 – Congratulations to hydrogeology student Amber Kuss (MS, Geosciences) for selection to the 2010 NASA DEVELOP National summer internship program, NASA Ames Research Center, Moffett Field, CA. Amber will work on an earth science research project, mentored by science advisors from NASA and partner agencies, and extend research results to local communities. Details about NASA DEVELOP internship program: http://develop.larc.nasa.gov/index.html
November 6, 2009 – Obi Nzewi (Groundwater Specialist with the San Francisco Public Utility Commission) leads groundwater-quality sampling demonstration for the GEOL 475&775 Hydrogeology class. Photos: pic 1, pic 2, pic 3, pic 4, pic 5, and pic 6.
October 28, 2009 – Gurdak invited talk titled "Recharge and chemical transport and storage in the vadose zone, High Plains aquifer" at the Nebraska Grout Study report release and conference, sponsored by the University of Nebraska - Lincoln.
October 22, 2009 – Gurdak co-chair with Shannon McNeeley (NCAR) of selected forum topic titled "Climate and Water: Advancing adaptation science and strategies for water-resource vulnerability from climate variability and change" for the National Center for Atmospheric Research (NCAR) 2010 Junior Faculty Forum on Future Scientific Directions, to be held in Summer 2010, Boulder, CO.
October 14, 2009 – Dr. Yossi Yechieli (Geological Survey of Israel), international expert on saltwater intrusion in coastal aquifers, guest lectures to GEOL 475&775 Hydrogeology class about saltwater intrusion of coastal groundwater resources in the Middle East.
Newspaper, Book, and Radio Interviews
2009 – “High Plains Water Currently "Acceptable"", The Aquifer: A publication fo the Groundwater Foundatio (http://www.groundwater.org/au/archives/AQ_2402.pdf), vol. 24, no. 2, Fall 2009
2009 – “USGS: Ogallala aquifer water quality currently acceptable": JournalStar.com, July 19, 2009
2009 – “High Plains aquifer water ok for now”, Associated Press.
2009 – "Future aquifer water supplies could be in jeopardy", Denver Post.
2009 – “High Plains aquifer water quality currently acceptable but human activities could limit future use”, USGS News Release.
2008 – “Recharge to the Ogallala aquifer beneath Playas”, Playa Lake Joint Venture Radio program aired on National Public Radio (NPR) affiliates across the Great Plains region, aired August 2008.
2008 – “Japan’s Food Security” by Tokuji Hisada, The Hokkaido Shimbun Press (1.8 million readers and 7th largest newspaper in Japan).
Recent Scientific Manuscripts
Nitrate Contamination of Groundwater:
Gurdak, J.J., and Qi, S.L., 2006. Vulnerability of recently recharged ground water in the High Plains regional aquifer to nitrate contamination. USGS Scientific Investigations Report 2006-5050.
Global Change and Groundwater:
United Nations Educational, Scientific and Cultural Organization (UNESCO) (Gurdak, J.J. is one of 19 contributing authors), 2008. Groundwater resources assessment under the pressures of humanity and climate change (GRAPHIC) – A framework document, GRAPHIC Series N°2, UNESCO Pub., Paris, France, 31 p.
Interannual to Multidecadal Climate Variability and Water Resources:
Gurdak, J.J., Hanson, R.T., McMahon, P.B., Bruce, B.W., McCray, J.E., Thyne, G.D., and R.C. Reedy, 2007. Climate variability controls on unsaturated water and chemical movement, High Plains aquifer, USA. Vadose Zone Journal 6(3), 533-547, doi: 10.2136/vzj/2006.0087.
Groundwater and Climate Change:
Gurdak, J.J., Hanson, R.T., and Green, T.R., 2009. Effects of climate variability and change on groundwater resources of the United States, U.S. Geological Survey Fact Sheet 2009–3074, 4 p.
Vulnerability Assessment of Water Resources:
Gurdak, J.J., 2008. Ground-water vulnerability: Nonpoint-source contamination, climate variability, and the High Plains aquifer, VDM Verlag Publishing, Saarbrucken, Germany, ISBN: 978-3-639-09427-5, 223 p.
Vulnerability of Public-Supply Wells to Land-Use Change (Central Valley):
McMahon, P. B., K. R. Burow, L. J. Kauffman, S. M. Eberts, J. K. Böhlke, and Gurdak, J.J., 2008. Simulated response of water quality in public supply wells to land use change, Water Resources Research, 44, W00A06, doi:10.1029/2007WR006731,
Nonpoint-Source Groundwater Contamination:
Gurdak, J.J., McMahon, P.B., Dennehy, K.F., and Qi, S.L., 2009. Water quality in the High Plains Aquifer, Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming, 1999–2004: U.S. Geological Survey Circular 1337, 63 p.
Gurdak. J.J., and Roe, C.D, Gurdak. J.J., and Roe, C.D, 2009. Recharge rates and chemistry beneath playas of the High Plains aquifer – A literature review and synthesis, U.S. Geological Survey Circular 1333, 39 p.
Gurdak, J.J., Walvoord, M.A., and McMahon, P.B., 2009. Susceptibility to enhanced chemical migration from depression-focused preferential flow, High Plains aquifer, Vadose Zone Journal, v. 7, no. 4, 1172–1184, doi: 10.2136/vzj2007.0145.
Gurdak, J. J., Greve, A. I., and Spahr, N. E., 2002. Water-quality data analysis of the Upper Gunnison River Watershed, Colorado, 1989-99. USGS Water-Resources Investigations Report 02-4001, 61 p.
Agricultural Effects on Groundwater:
Bruce, B.W., Becker, M.F. Pope, L.M., and Gurdak, J.J., 2003. Ground-water quality beneath irrigated agriculture in the Central High Plains aquifer, 1999-2000. USGS Water-Resources Invest. Report 03-4219, 39 p.
High Plains (Ogallala) Aquifer:
McMahon, P.B., Dennehy, K.F., Bruce, B.W., Gurdak, J.J., and Qi, S.L., 2007. Water-quality assessment of the High Plains aquifer, 1999-2004, USGS Professional Paper 1749, 212 pp.
Gurdak, J.J., and McCray, J.E., 2005. Groundwater vulnerability to pesticides: statistical approaches, in Lehr, J.H. and Keeley, J., Water Encyclopedia: Ground Water, John Wiley & Sons, ISBN: 0-471-44164-3, 594–599
Gurdak, J.J., McCray, J.E., Thyne, G.D., and Qi, S.L., 2007. Latin hypercube approach to estimate uncertainty in ground water vulnerability. Ground Water, 45, 3, 348-361, doi: 10.1111/j.1745-6584.2006.00298.x.
Geographic Information System (GIS) Model Development:
Gurdak, J.J. Qi, S.L., and Geisler, M.L., 2009. Estimating prediction uncertainty from geographical information system raster processing: A user’s manual for the Raster Error Propagation Tool (REPTool), U.S. Geological Survey Techniques and Methods 11–C3, 71p.
Gurdak, J. J., Spahr, N., E., and Smijtzer, R., 2002. Traveltime characteristics of Gore Creek and Black Gore Creek, Upper Colorado River Basin, Colorado, USGS Water-Resources Invest. Report 02-4037, 14 p.
Send comments and questions to: firstname.lastname@example.org.