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summer of 1995 to inspect, ground truth, and mark each habitat cluster and cross section with wooden stakes and plastic flagging. Six sampling trips, three each in 1995 and 1996, were planned in late summer and early fall to collect meso- and microhabitat data at each of three experimental flows. Some adjustments, however, had to be made after the 1995 field season. The number of habitat clusters and cross sections that realistically could be sampled had to be reduced because the experimental flows out of Taylor Draw Dam could only be sustained for 5 days. Also, only one sampling trip was made in late summer 1995 because of extended spring runoff and high flows. The number of habitat clusters and cross sections sampled for 1995 and 1996 are given in Figure 2. The habitat types found along each cross section were recorded. Habitat criteria developed by Bisson et al. (1982) and Modde et a1. (1991) were modified to define each habitat type (Appendix 1). Field measurements were taken in accordance with Bovee and Milhous (1978). A measuring tape was stretched across each cross section and width, depth, and water velocity measurements were taken at 0.5 m intervals. Water velocity measurements were taken with a Marsh-McBimey flow meter at 0.6 of the water depth when depths were < 0.76 m, and at 0.2 and 0.8 the depth when water depths were> 0.76 m (Leopold et al. 1964, Buchanan and Somers 1969). Finally, water temperature was taken at each habitat cluster. Experimental Flows Three experimental flows were selected from past flow records (Ann Brady, Rio Blanco Water Conservancy District, personal communication; Lentsch et aI., 2000): 150,350, and 551 cfs. The lowest flow was requested for late fall 1995 and 1996 when routine maintenance work on Taylor Draw Dam was to be done. Unfortunately, this maintenance was not accomplished and 5