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<br />3.0 Scientific Basis And Underlying Principles <br /> <br />3-5 <br /> <br />April 2004 <br /> <br />Table 3-1. Continued <br /> <br />Anticipated effects Significant inundation of floodplain habitat Significant No floodplain inundation, but some flooding <br /> and off-channel habitats (e.g., tributary inundation of of off-channel habitats. May benefit <br /> mouths and side channels) to establish river- floodplain habitat recruitment of Colorado pikeminnow in some <br /> floodplain connections and provid warm, and off-channel years. <br /> food-rich environments for growth and habitat in at least 1 of <br /> conditioning of razorback suckers (especially 4 average years; <br /> young) and Colorado pikeminnow. some flooding of off- <br /> channel habitats in <br /> all years. <br /> Significant channel maintenance to rework Significant channel Some channel maintenance in all years <br /> and rebuild in-channel sediment deposits maintenance in at because flows exceed the incipient-motion <br /> (including spawning substrates), increase least I of 2 average threshold. <br /> habitat complexity, form in-channel sand years. <br /> bars, and prevent or reverse channel <br /> narrowmg. <br /> Provide conditions for gonadal maturation and cues for spawning migrations and reproduction by the endangered <br /> fishes <br />