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found to be usable (Appendix 2, Table 8). Percent surface area of the river with usable habitats was lowest (36%) at 60 cfs, even though usable area decreased with flow. At flows over 150 cfs deep runs become the most common habitat type in the sequence. Combined clusters in Strata 6 Figure 14 and Appendix 2, Table 9 show habitat composition when all 20 cross sections in Strata 6 are combined. Total river reach represented by the 20 cross sections (5,622 ft) is 3.6 % of Strata 6 (29.9 miles). Shallow pools (unusable habitat) are the most common habitats available at flows between one and 100 cfs. Between 150 and 250 cfs shallow runs are the most common habitats. Figure 15, gross habitat versus flow, shows a rapid increase in wetted surface area between one and 100 cfs, but between 100 and 400 cfs surface area increases linearly. Usable surface area increases in a fairly linear relationship with flow between 1 and 250 cfs. The amount of usable area at 200 cfs is only double that of what is projected at 1 cfs. With only one cfs of flow, the wetted surface area of the river models to be 97,263 square feet per 1,000 ft of stream (Appendix 2, Tables 6-9). This means the average stream width of is 97.3 feet at just one cfs. The river maintains width at very low flows because of its flat gradient and the low width/depth ratio found at Clusters 73.3 and 77.8. A width/discharge relationship was determined by averaging the widths of each cross section in a sequence for each of the simulated flows. (Mean cross-sectional width is not the same as the mean stream width as determined by Appendix 2, Tables 6-9). The width/discharge relationship was highly variable for cross sections within a cluster and between clusters (Figure 16). High gradient habitats (riffles) had narrower widths at low flows than low gradient habitats with low width/depth ratios. Cluster 73.3 had the lowest average cross sectional width at I cfs (54 ft) and Cluster 62.8 had the widest average cross section width at 400 cfs at 242 f1. Between one and 100 cfs, stream width increases rapidly with flow, but at flows between 150 and 400 cfs the relationship is fairly linear. Mean channel width, grassline to grassline (all cross sections combined), was found to average about 280 ft, and the mean cross section width of this strata at 400 cfs was 229 ft or about 82% of the bankfull width. 33