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at 200 cfs. At higher flows width/depth ratio was higher in Strata 6, but at flow under <br />200 cfs it was higher in Strata 8. <br />Width/depth ratios were strongly correlated with a habitat type. Riffles had the <br />highest values, and runs were higher than pools (Table 6). <br />The mean of the inflection points for average depth and rise in stage and for Strata 6 <br />and Strata 8 were 153 cfs -0.72 ft and 142 cfs -0.64 ft and 169 cfs -1.28 ft, and 151 <br />cfs -1.17 ft, respectively (Table 2 and 3). For the combined data, the Method A inflection <br />points for average depth was 146 cfs compared to 125 cfs for Method B. <br />Average depths per flow were slightly less in Strata 8 (Figures 7 and 9 in Appendices <br />V. A. and VI. A.). The lower depths in Strata 8 may be a function of a narrower and less <br />disturbed channel above Government Bridge. Mean depths at Method A inflection point <br />flows were 0.7 ft, 1.3 ft and 3.0 ft for riffles, runs and pools respectively (Table 6). <br />Average velocity inflection points for Method A were at 177 cfs —1.68 ft/sec for <br />Strata 6 and 173 cfs —1.52 ft/sec for Strata 8 (Table 2 and 3). Figures 16 and 18 <br />(Appendix V. A. and VI. A.) show that average velocity does not drop below 1.0 ft/sec in <br />riffles until a flow of 20 cfs in Strata 6 and 40 cfs in Strata 8. The fact that moderate <br />velocities are maintained at very low flows is due to the fact that most of the water is <br />contained in narrow, deeper inner - channels, usually along a bank. At flows of 20 to 40 <br />cfs, percent wetted perimeter (20- 30 %) and average depths (0.3 — 0.4 ft) are reduced, <br />which allows for a moderate velocity. <br />Inflection points determined by Method A were at higher flow for all variables <br />except for width/depth ratio (Table 6). Method A is probably a more accurate indication <br />of the ........ <br />22 <br />