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The objectives of this paper are to describe the unique nature of striped bass population dynamics in Lake Powell from 1974 to 1998. Various striped bass life history aspects are presented and compared with other waters. The predator/prey relationship between striped bass and threadfin shad is discussed, along with management implications derived from 25 years of research and monitoring. HISTORICAL BACKGROUND The striped bass population has been monitored from initial stocking to the present by the Utah Division of wildlife Resources with funding from federal grants, including section 8 of the Colorado River Storage Project, Dingell-Johnson Project F-28-R and more recently OJ Project F-46-R. Striped bass stocking began in 1974 and concluded in 1979 with a total of 815,000 striped bass fingerlings stocked in various locations about the lake (Table 1). Young striped bass grew rapidly, feeding on an abundant forage population of threadfin shad that was previously unexploited in pelagic reservoir areas. Initial growth was rapid nearing the highest recorded growth of any landlocked striped bass population (Gustaveson et al. 1980). The first cohort of stocked striped bass matured in 1979. Mature adults and subsequently young-of- year (yoy) striped bass were collected near the Colorado River inflow where spawning fish would have been attracted by river currents. Mature adults also staged and spawned near Glen Canyon Dam some 300 km from the Colorado River inflow. Spawned eggs hatched despite the absence of turbulent river currents thought to be necessary to suspend eggs during incubation. Surprisingly, yoy striped bass were found near Glen Canyon Dam in numbers equal to the uplake abundance of yoy. striped bass yoy less than one month old were not able to be transported over 300 km in the 2