Supplemental feeding has been used in attempts to improve sportfish populations; however, few studies have evaluated efficacy of this practice. I evaluated channel catfish, Ictalurus punctatus, growth, condition, size structure, and angler catch in McPherson State Fishing Lake during three multi-year periods of supplemental feeding rates (i.e., no feeding, 84 kg·ha·yr, and 336 kg·ha·yr). Growth of channel catfish was greater during years when supplemental feeding rate was low compared to years during high feeding rates. Condition of channel catfish was greater during years of high feeding rate, although contribution to the fishery that was attributed to increased condition was low. Inferences regarding size structure were unclear because of variable stocking rates and fishing regulations. Trends in angler harvest of channel catfish were variable; although, average size of harvested channel catfish was generally highest during years of supplemental feeding. These results indicate that overall effects of supplemental feeding were variable, and the funds associated with high feeding rates could be utilized to purchase commercially-grown fish approximately equal to channel catfish biomass harvested from the fishery in a given year.