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. Lab at Colorado State University for identification to species and otoliths from larvae were examined to determine presence of a TC mark. . Stewart Lake At Stewart Lake, four drift nets were set in the single inlet breach midway in the water column and two were set immediately downstream of the inlet in the Green River near shore (Figure 5). All drift nets were equipped with a GO Model 2030R mechanical flow meter suspended in the center of the net to determine velocity of water sampled. Meters showing incorrect readings were replaced. Depth and flow measurements were also taken within the breach with the Marsh-McBirney flow meter and were used to estimate breach flows. The Marsh-McBirney flow meter was used to record flow passing through the nets on 18 and 24 May, but not on 17 or 21 May. On two sampling intervals on 18 May, additional drift nets were stacked on top of the two center drift nets (for a total of six nets set within the breach that day) such that the bottom net was placed on the substrate and the second net, placed immediately on top of the bottom net, was about 45 cm below the surface ofthe water. These additional nets were used to increase sample size. The middle of the top net (flow meter position) was 45 centimeters (cm) above the substrate, and the middle of the lower net was 15 cm above the substrate. Despite sampling less flow, collections near the bottom captured many more beads than the mid-column net. Because of this, an adjustment was made in entrainment rates to account for differences in bead density at each position. This was accomplished by estimating the total entrainment rate of beads in the lower cell of water measured by the lower two nets as well as estimating entrainment rate in the upper portion of the water column measured by the upper four nets. We assumed that bead . . . . . . . . 29 I