Harvest and population dynamics of warmwater fish populations in Escanaba Lake have been under study since 1946, when complete creel census was initiated. Walleye (Stizostedion vitreum vitreum) and yellow perch (Perca flavescens) were among the most important species in the sport catch. The purpose of this report is to describe dynamics of the walleye population from 1955 to 1972.Annual densities of age 3 and older walleye in spring ranged from 13 to 52/ha (mean = 34) and standing crops averaged 12.3 kg/ha. Annual densities of fall fingerlings appeared to be the most important factor influencing size of adult populations. We were unable to isolate factors that governed densities of fall fingerlings. Year-class strength was not affected by water temperatures during incubation nor by size of fall fingerlings. Growth rates of fingerling walleye were density-independent. Survival of fingerlings to age 3 averaged 12% annually; survival was not influenced by size of fingerlings nor by density of potential predators. We found no evidence to suggest that cannibalism had any effect on density of fingerlings or their survival to age 3. Total mortality of adult walleye averaged 47% annually and exploitation rate was 28%. Ricker's (1975) equilibrium yield model was used to assess possible effects of a size limit on walleye yields. We concluded that a size limit would lead to an increase in population biomass, a decrease in growth, and that yields would not change greatly. Key words: Percidae, population dynamics, Stizostedion, harvest, abundance, density, regulations, survival, production, equilibrium yield, biomass