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Relative weight (W~) was computed as 122, 110, and 122 for ages 4, 5, and 6 using measured mean TL and weights. The standard weight equation for channel catfish given by Anderson (1980) was also used. Younger age classes had shorter mean TL than the minimum of 280 mm recommended by Murphy and Willis (1991) for calculating W~. Fish with W~ near 100 are in a condition that is balanced with their food supply, fish with values over 105 are plump from an abundant food supply (Flickinger and Bulow 1993). The 1991 Kenney Reservoir LMP predicted that channel catfish would grow slowly in the reservoir. Reasons for slow growth include cool water temperatures (Andrews and Stickney 1972) and excessive turbidity (Baxter and Simon 1970). However, this does not appear to be the case. Factors that would act to increase channel catfish growth include a relatively low stocking rate (1.2 fish per surface hectare or 5 fish per surface acre), the lack of competition from a higher level predator, lack of competition from additional age classes of channel catfish, abundant prey, and stocking at a relatively large size. Channel catfish have a good supply of preferred food in Kenney Reservoir. Sigler and Sigler (1987) reported that fish were the most important food for 150-300 mm (6-12 inch) channel catfish. Carlander (1969) reported crayfish and fathead minnows were preferred prey for channel catfish. Fathead minnows were the dominant species in Kenney Reservoir from 1984-1990, comprising 45- 90% of the total fish community (Trammell 1991). They still were commonly observed while electrofishing in 1993. Crayfish were frequently found entangled in trammel and gill nets during this study. B. River A total of 404 channel catfish were sampled from the White River downstream of Taylor Draw Dam and checked for the adipose fin clip. None of the channel catfish stocked in Kenney Reservoir in 1992 were found. Two fish from Kenney Reservoir, one wild and one stocked, were taken from the White River upstream from the reservoir. Because of good sampling conditions, probably the best estimate of channel catfish density in the White River downstream of Kenney Reservoir is provided by electrofishing results from the upper and lower river in 1994 (Table D-1). Those catch per efforts vaned little suggesting that the size of the channel catfish population in each reach was similar. Correspondingly, since the habitat is similar in the upper and lower sampling reaches, and in between, channel catfish populations should be fairly evenly distributed throughout this entire area. The length of the' White River in Colorado from Kenney Reservoir downstream to the Utah border is 51.5 km. The mean catch per effort for electrofishing the two reaches in 1994 was 13.8 channel catfish per km. Assuming a catch efficiency of 25 percent under the favorable conditions that existed, this expands into a channel catfish population of 55 fish/km or 2,832 channel catfish in the White River in Colorado. The lower reach was sampled on two dates and the upper reach on one date, and one electrofishing pass was made along each shoreline of the river each date. Since there 15