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. approximately doubled and the percent of beads entrained more than doubled. Total bead entrainment (number entrained through the entire breach per amount of flow through the entire breach, not just beads and flow sampled by the nets) of 14.5% during the third (peak) release was high, a surprising rate even considering that beads were released just upstream and mostly near the river bank. During Thunder Ranch sampling on the ascending and descending limb of the hydro graph (first and fourth releases), when river stage was similar (420 m3/sec and 403 m3/sec, respectively), we also observed similar flow (0.3 and 0.4%, respectively) and bead entrainment (0.7 and 0.9%, respectively). This suggested that wetlands with this connection configuration are efficient at entraining water and fish at a variety of flow levels, regardless of whether flows are increasing or decreasing. Breaches 3 and 5 had different entrainment rates, with Breach 3 connecting at lower river flows than Breach 5. As flows increased, Breach 5 entrained more water but bead entrainment did not increase (Tables 9 and 10). This may have been due to advection (transport in fluids) of most beads that were available into the wetland at the upstream Breach 3, leaving relatively few beads for entrainment at downstream Breach 5. At the lowest flow level during the fourth release, number of beads entrained into Breach 5 was particularly low. Similar to 2005, the breaches became more effective at entraining beads as flows increased (Table 12). On 21 May, only 25% of the beads captured were captured within the breach, the remaining 75% of beads were captured in the near shore nets. On the next two sampling occasions (23 and 24 May [peak flow occurred 24 May]), the percentage of beads captured within the breach rose to about 80%, compared to only about 20% in near shore nets in the river. . . . . . . . . . 45 .