Bill Renwick

Professor Emeritus of Geography
Miami University Oxford, Ohio   45056
114 Shideler Hall
513 529 1362



My interests are in geomorphology, water resources and environmental management.  Most of my recent work has examined the impacts of historic variations in erosion rates on sediment storage and yield, and relations between land use/land management and water quality.  I study these issues both at the local (watershed) scale mainly in southwestern Ohio, and at the sub-continental scale and across the United States.  I collaborate with Mike Vanni and Maria Gonzalez in long-term studies of land management, water quality and reservoir ecology.  When time permits I study lakes and reservoirs from the seat of a wooden boat.

Selected Publications

Renwick, W.H., M.J. Vanni, T.J. Fisher, E. L. Morris, 2018. Stream Nitrogen, Phosphorus, and Sediment concentrations Show Contrasting Long-term Trends Associated with Agricultural Change. Journal of Environmental Quality. DOI: 10.2134/jeq2018.04.0162

Williamson,T.J., M.J. Vanni, M.J. Gonzalez, W.H. Renwick, M.T. Bremigan, & J.D. Conroy, 2018. The importance of nutrient supply by fish excretion and watershed streams to a eutrophic lake varies with temporal scale over 19 years. Biogeochemistry. DOI: 10.1007/s10533-018-0490-6

Kelly, P.T., Vanni, M.J. & Renwick, W.H., 2018.  Assessing uncertainty in annual nitrogen, phosphorus, and suspended sediment load estimates in three agricultural streams using a 21-year dataset. Environmental Monitoring & Assessment 190: 91. doi:10.1007/s10661-018-6470-4

Renwick, W.H., 2017.  Dams.  In Richardson, D., N. Castree, M.F. Goodchild, A. Kobayashi, W. Liu, and R.A. Marston, Editors, International Encyclopedia of Geography.  John Wiley & Sons.  DOI: 10.1002/9781118786352.wbieg0634

Hayes, N.M., M.J. Vanni, M.J. Horgan, and W.H. Renwick, 2015. Climate and land use interactively affect lake phytoplankton nutrient limitation status. Ecology 96: 392.402

Williamson, C.E., J. A. Brentrup, J. Zhang, W.H. Renwick, B.R. Hargreaves, L. B. Knoll, E. P. Overholt, and K. C. Rose, 2014.  Lakes as sensors in the landscape: Optical metrics as scalable sentinel responses to climate change.  Limnology & Oceanography 59: 840-850.

Knoll, L. B., M.J. Vanni, W.H. Renwick, E.K. Dittman, and J.A. Gephart, 2013. Temperate reservoirs are large carbon sinks and small CO2 sources: Results from high resolution carbon budgets.  Global Biogeochemical Cycles.  27: 52-64

Rakovan, M.T. and W.H. Renwick, 2011. The role of sediment supply in channel instability and stream restoration. Journal of Soil and Water Conservation 60: 40-50.

Renwick W H., 2009. Lakes and Reservoirs of North America. In: Gene E. Likens, (Editor) Encyclopedia of Inland Waters. volume 2, pp. 524-532 Oxford: Elsevier.