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. mainstem flow entrained rose from 0.17% to 0.37%. This relationship is mirrored by the percentage of beads entrained into the flood plain site, which increased from 0.04% during the first release to 0.2% during the second release. Total entrainment (as reflected only by net captures as opposed to entrainment throughout the entire breach extrapolated from bead and flow samples) reveals essentially the same pattern. Higher entrainment levels at higher flows suggested that entrainment of razorback sucker larvae produced at upstream spawning areas would be higher with higher discharge levels. Some orange beads (released at Razorback Bar on river right) were entrained at Thunder Ranch on each release occasion; however, these numbers were low on all occasions again suggesting that Razorback Bar will contribute only a handful of larval razorback sucker to the total entrained into Thunder Ranch. The majority of beads entrained was yellow and had been released at Escalante Bar on river left. This supported the importance of Escalante Spawning Bar as a source of larvae for entrainment at Thunder Ranch. . . . . . Stewart Lake, 2005 Entrainment rates of water and beads at Stewart Lake in 2005 were confounded by lake management priorities that dictated a closed outlet for the duration of the sampling period, including during the ascending limb of the Green River hydro graph. Therefore, Stewart Lake was not a flow-through site in 2005. This resulted in declining entrainment of water and beads (and presumably larvae) as sampling progressed during higher flow levels later in the season (Table 6, Figure 13). For example, 321 beads were entrained and captured during the first sampling period at a relatively low flow but only 32 were captured during the sampling period when the highest flow occurred. The correlated metrics of beads entrained per unit water . . . . 39 .