This document summarizes research on reservoir water quality and productivity in Ohio. A state-wide database was compiled containing water quality data from 212 reservoir-years sampled between 2006 and 2007. Various water quality metrics were analyzed including secchi transparency, total phosphorus, chlorophyll a, and suspended sediments. A principal components analysis reduced the dimensions to a single composite productivity variable. Reservoirs were then ranked on this scale from hypereutrophic to oligotrophic. The results were then compared to understand trends in productivity across reservoirs and how these may impact sportfish populations over time with changes to watershed land use and reservoir aging. Understanding these relationships can help conceptualize variability in sportfish recruitment and survival.