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Joshua C. Koch Title: Research Hydrologist Address: 4210 University Dr., Anchorage, AK 99508-4626 Phone: (907) 786-7119 Fax: (907) 786-7150 Email: jkoch@usgs.gov

Education and/or Training

PhD	2010	University of Colorado, Boulder, CO	Civil, Environmental, and Architectural Engineering
MS	2005	University of Arizona, Tucson, AZ	Department of Hydrology
BA	2001	Wesleyan University, Middletown, CT	Earth and Environmental Sciences

Areas of Specialization and/or Research Interests

Surface water / groundwater interactions; hyporheic hydrology and biogeochemistry; carbon, nitrogen, and phosphorus cycling; flow above/through frozen ground; soil pipe formation and transport; hydrologic modeling.

Professional Experience

2011 - Present	Research Hydrologist, U.S. Geological Survey (USGS), Anchorage, AK
2006 - 2011	Student Hydrologist, Branch of Regional Research, USGS, Boulder, CO
2005 - 2006	Research Assistant, Institute of Alpine and Arctic Research, University of Colorado, Boulder
2003 - 2005	Research Assistant, Semi-Arid Hydrology and Riparian Areas, University of Arizona, Tucson, AZ
2002 - 2003	Hydrologist Intern, Branch of Regional Research, USGS, Lakewood, CO
2001 - 2002	Hydrologist Intern, MA-RI Water District, USGS, Northborough, MA

Professional Activities and/or Memberships

American Geophysical Union, Hydrology and Cryosphere Sections
American Water Resources Association - Alaska Chapter
Association of Polar Early Career Scientists

Significant Recent Publications

Koch, J. C., R. L. Runkel, R. Striegl, and D. M. McKnight. 2013. Hydrologic controls on the transport and cycling of carbon and nitrogen in a boreal catchment underlain by continuous permafrost. J. of Geophys Research-Biogeosciences DOI:10.1002/jgrg.20058

Callegary, J. B., C. P. Kikuchi, J. C. Koch, M. R. Lilly, and S. A. Leake. 2013. Review: Groundwater in Alaska (USA), Hydrogeology Journal, 21(1):25-39.

Koch, J. C., S. A. Ewing, R. Striegl, and D. M. McKnight. 2013. Rapid runoff via shallow throughflow and deeper preferential flow in a boreal catchment underlain by frozen silt (Alaska, USA), Hydrogeology Journal, 21(1):93-106.

Pearce, J., T. DeGange, P. Flint, T. Fondell, D. Gustine, L. Holland-Bartels, A. Hope, J. Hupp, J. Koch, S. Talbot, D. Ward, and M. Whalen. 2012. Changing Arctic Ecosystems—Measuring and forecasting the response of Alaska's terrestrial ecosystem to a warming climate. U.S. Geological Survey Fact Sheet 2012-3144, 4 p.

Koch, J. C., R. Neupauer, and D. M. McKnight. 2011. Simulating unsteady flow, anabranching, and hyporheic dynamics in a glacial meltwater stream using a coupled surface water routing and groundwater flow model. Water Res. Research 47:W05530.

Koch, J. C., D. M. McKnight, and J. Baeseman. 2010. Effect of unsteady flow on nitrate loss in an oligotrophic, glacial meltwater stream. J. of Geophys Research-Biogeosciences 115:G01001.