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and eddies. Fast run became the most abundant habitat at 2,300 cfs and remained so for all higher flows examined. Area of eddies increased slightly from 981 to 2,300 cfs, but they were almost eliminated at higher flows. Except for one small eddy, flooded vegetation (primarily Tamarix sp. and Salix sp.) along the shoreline of the river was the only habitat other than fast runs available at flows greater than 2,300 cfs. Flooded vegetation was available at all but the lowest discharge. Because of taA banks that contained all of the river's flow at the measured discharges, total surface area of the river increased minimally as discharge increased. Two cross sections were surveyed at this site and they showed relatively little change over the course of the study (Figure 5). The confined, U-shaped channel explains the very simple habitat types available, since the straight banks essentially created ahigh-velocity ditch at higher flows. Except for a small amount of deposition at RM 31.2 after fall 1994, very little change in the river bed occurred over the course of the study. Site 2 This site was spool-eddy complex that had a variety of habitats available at flows less than 4,500 cfs (Figures 6, 7). Pool, eddy, and slow run habitats were about equal in area at 981 cfs. Increasing water velocities caused area of fast run to increase as discharge increased. Surface area of fast runs increased with discharge to about 4,500 cfs when the increase leveled off. Pool habitat disappeared at 4,500 cfs, but area of eddies increased at flows above 4,500 cfs. The eddies were caused by rocks and irregularities along the western shoreline which interrupted the uniform downstream flow. Rocks and a constriction in the channel formed a hydraulic rapid at-about 4,500 cfs. A large eddy was also created at the downstream end of the rapid. The rapid was an important habitat component between flows of 4,500 to 13,300 cfs, but it became a fast run at 15,800 cfs. Flooded vegetation became a minor component at 13,000 to 15,800 cfs as the water rose high enough to flood tamarisk along the eastern shoreline. Slack water also became important at 15,800 cfs as water rose high enough to cover a gentle slope covered with terrestrial vegetation at the downstream end of the study site. Two cross sections were surveyed at this site -below (RM 33.7; Figure 8) and above (RM 34.0; Figure 9) the constriction that formed the rapid at high flows. Both of these sites were pools or slow runs at low flows and fast runs with eddies at high flows. A dike on the northeast side of the river protected an orchard and confined the river at high flows. The channel at the upper transect was also confined by cliffs on the southwest side of the river. A tapered bank on the west shoreline allowed some out-of--bank flooding at higher flows. Although some scouring and deposition occurred over the course of the study, no major changes in channel configuration occurred at either transect. The upper transect experienced some scouring along 10