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30 <br />• Tyus and Karp (1989) reported that fast daily flow fluctuations may <br />strand fishes (especially young of year) in backwaters, thus exposing <br />them to terrestrial predation and increased competition. <br />Maddux et al. (1987) found daily flow changes below Glenn Canyon Dam <br />stranded many species including humpback chub. Over 800 rainbow <br />trout were stranded in one 7-mile-long study area, nearly all were mature <br />fish presumably spawning over a cobble bar. Egg desiccation on <br />exposed bars is also a potential problem. <br />Humpback chub <br />o High peak flows in the Yampa River maximize eddy habitat critical to survival <br />• of humpback chub larvae and adults. <br />Tyus and Karp (1989) reported eddy habitat to be utilized by adult and <br />larval humpback chub in the Yampa River. A positive relationship <br />between flow and eddy area was reported. <br />Bonytail chub <br />o A natural flow regime may be necessary for bonytail chub reproduction. <br />Holden (1980a) reported bonytail chub reproduction in the Green River <br />just below Flaming Gorge Dam ceased while the reservoir was filling. <br />0