Madison, Wisconsin: Wisconsin Conservation Department
Production (total growth in weight by all fish in the population during a given time period including growth by fish that died during the period) of wild brook trout (Salvelinus fontinalis) in Lawrence Creek was calculated monthly during 1960-64, for all age groups, and throughout the lifespan of the 1959-61 year classes. Contemporary statistics on the sport fishery were derived from a compulsory creel census. Three trout population estimates made annually with electrofishing gear provided the basic data for estimating monthly numerical densities. Growth data were collected monthly from known-age trout during 1963 and in April, June, and September during all other years.