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Table A3. Matrix of flow and temperature recommendations, hypotheses, and relevant studies for Reach 2 (Yampa River confluence to White River confluence) of the Green River. Language for anticipated effects and uncertainties was taken from Muth et al. (2000), U.S. Department of the Interior and Western Area Power Administration (2005), U.S. Fish and Wildlife Service (2005), or U.S. Department of the Interior (2006). See Table 4 for details of specific studies. Primary studies (bold) and supporting studies are linked to Anticipated Effects (A) or Uncertainties (U) are ordered sequentially. General Flow and Temperature Relevant Studies Recommendations Anticipated Effects and Uncertainties (Hypotheses) (primary studies in bold) (Muth et al. 2000) Reach 2-Spring Peak Peak flows in Reach 2 should be of Anticipated Effects the magnitude, timing, and duration AS. Wet and Moderately Wet: Significant inundation of AS-I. Project Cap-6 RZ to provide floodplain inundation in floodplain habitat and off-channel habitats (e.g., tributary mouths AS-2. Project Cap-6 bt/rz the Ouray portion of the river for at and side channels) to establish river-floodplain connections and AS-3. Project Cap-6 rzlbt least 2 weeks in 4 of 10 years and at provide warm, food-rich environments for growth and AS-4. Project Cap-6 rzlentr least bankfull flows in 1 of2 years. conditioning of razorback suckers (especially young) and AS-S. Project Cap-6HYD In all years, peak: flows should be of Colorado pikeminnow. AS-6. Evaluation of stocked fish sufficient magnitude and duration to Average: Significant inundation of floodplain habitat and off- AS-7. Western aerial photography of200S provide at least some in-channel channel habitat in at least 1 of 4 average years; some flooding of peak flow habitat maintenance throughout the off-channel habitats in all years. AS-8. Project 128 reach. No upper limits are placed on Moderately Dry and Dry: No floodplain inundation, but some AS-9. Project 22f recommended peak: flows in any flooding of off-channel habitats. May benefit recruitment of AS-10. Project C-6-EM hydrologic condition. The duration Colorado pikeminnow in some years (Muth et al. 2000). of peak: flows less than 527 m3/s (18,600 cfs) should be limited, A6. Wet and moderately wet years. Significant channel A.6-t. Project 8Sf because neither floodplain nor maintenance to rework and rebuild in-channel sediment deposits A6-2. Western backwater topography backwater habitats are available at (including spawning substrates), increase habitat complexity, study these flows. form in-channel sand bars, and prevent or reverse channel A6-3. USGS razorback spawning bar study narrowing. Average years. Significant channel maintenance in at least 1 of2 average years. Moderately dry and dry years. Significant channel maintenance in at least 1 of2 average years (Muth et al. 2000). A 7. Provide conditions for gonadal maturation and cues for A7-t. Project 22f spawning migrations and reproduction by the endangered fishes A7-2. Project 128 (Muth et al. 2000). A 7 -3. Evaluation of stocked fish . ~ ~ ~ ~ ::tl ~ S ~ ~ ;J> I ....... VI ~ <::r- "'"t l:: t:l ~ ,t-.> t-.> C C '-l