The McDonnell Hillslope Hydrology Lab focuses on measuring, modeling, and understanding hillslope-scale water cycling. Our three main research questions are: Where does water go when it rains? What flowpath does it take to the stream? and, How old is the water in the stream? Our work is field-based.

For its first 20 years, Jeff's group focused on understanding hillslope storage and release and topics included hydrograph separation, streamwater transit time analysis and deciphering runoff mechanisms across diverse hillslopes and catchments. This culminated in recognition of the oneness of all runoff forms—and how filling, spilling, connectivity and threshold behavior dominate all hillslope runoff processes.

For the past 10 years, the group has begun to broaden its aims by going after additional questions of what happens to water on hillslopes between events: Where do trees get their water? and how does this impact lateral flow and groundwater recharge? The group is also working to apply experimental findings to the construction of hillslopes for mine covers and green roofs.

Jeff will be on sabbatical for the 2019 calendar year but will be taking on new Ph.D. students and postdocs commencing in 2020. 

Read our lab vision Here.