Populations of Culex restuans and Culex pipiens were monitored at 16 locations throughout St. Joseph County, Indiana using one oviposition trap and one New Jersey light trap at each site. Over a 12-week period, the total number of egg rafts collected weekly from ovitraps was positively correlated with the weekly number of Culex females (r=0.53), Culex males (r=67) and with the total Culex adults (r=0.63) collected from light traps. Pair-wise comparisons of weekly collections from individual ovitraps and light traps at each site showed that the number of egg rafts in ovitraps was positively correlated with total number of adult Culex from light traps. The number of significant correlations between weekly collections of adult Culex and egg rafts increased from 38% to 50% when ovitraps were aged one week prior to use. Although ovitraps and light traps sample different segments of the Culex populations, both demonstrate a similar pattern of Culex activity.