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UMBC Chemical and Biochemical Engineering
Claire Welty
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TRC Bldg., Rm 102


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Claire Welty


Professor of Environmental Engineering
Director, Center for Urban Environmental Research and Education


Ph.D., Civil and Environmental Engineering – M.I.T., 1989
M.S., Environmental Engineering – The George Washington University, 1983
B.S., Environmental Sciences – University of Virginia, 1976

Professional Interests

Our interest is in developing an end-to-end system of field-deployed sensors and fully coupled groundwater-surface water mathematical models to quantify and predict the urban hydrologic cycle and coupled biogeochemical cycles from neighborhood to regional scales. Our goal is to be able to assimilate sensor data into hydrologic and water quality models in near-real time for predicting flow paths, fluxes and stores of water and chemicals on land surfaces and in the subsurface. We work in collaboration with the NSF Baltimore Ecosystem Study Long-Term Ecological Research Site and the USGS MD-DE-DC Water Science Center. While methods are being developed using place-based research in Baltimore area, the methods are widely applicable to other urban areas.


Bhasker, A. S. and C. Welty. 2012. Water Balances along an Urban-to-Rural Gradient of Metropolitan Baltimore, 2001-2009. Environmental and Engineering Geoscience.

VerHoef, J., C. Welty, J. Miller, M. Grese, M. P. McGuire, R. Sanderson, S. Kaushal, and A.J. Miller. 2011. Preliminary Assessment of Real-Time Sensor Deployment in Baltimore Urban Watersheds. CUERE Technical Report 2011/001. UMBC, Center for Urban Environmental Research and Education, Baltimore, MD.

Sivirichi, G., S. Kaushal, P.M. Mayer, C. Welty, K. Belt, T. A. Newcomer, K. M. Delaney, M.M. Grese. 2010. Longitudinal variability in streamwater chemistry and carbon and nitrogen fluxes in restored and degraded urban stream networks. Journal of Environmental Monitoring, DOI: 10.1039/c0em00055h.

Runyan, C. and C. Welty. 2010. Use of the White Method to Estimate Evapotranspiration along an Urban Riparian Corridor. UMBC/CUERE Technical Report 2010/001. University of Maryland Baltimore County, Center for Urban Environmental Research and Education, Baltimore, MD.

Kaushal, S., M. Pace, P. Groffman, L. Band, K. Belt, P. Mayer, C. Welty. 2010. Land Use and Climate Variability Amplify Contaminant Pulses. EOS, Transactions, American Geophysical Union, 91(25):221-222, 22 June 2010.

Ryan, R.J., P.C. Larson, and C. Welty. 2010. The Logistics and Mechanics of Conducting Tracer Injection Experiments in Urban Streams. Urban Ecosystems, DOI 10.1007/s11252-010-0144-5.

Ryan, R.J., C. Welty, and P.L. Larson. 2010. Variation in Surface Water-Groundwater Exchange in an Urban Stream. Journal of Hydrology, 392: 111. doi 10.1016/j.jhydrol.2010.06.004.

Fraley, L. M., A. J. Miller, and C. Welty. 2009. Contribution of In-Channel Processes to Sediment Yield of an Urbanizing Watershed. Journal of the American Water Resources Association, DOI:10.1111/j.1752-1688.2009.00320.x.

National Research Council, Committee on Reducing Stormwater Contributions to Water Pollution, 2009. Urban Stormwater Management in the United States. National Academy Press, Washington, DC.

Maxwell, R.M., C. Welty, and R.W. Harvey. 2007. Revisiting the Cape Cod Bacteria Injection Experiment Using a Stochastic Modeling Approach. Environ. Sci. Technol. 41, 5548-5558.