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<br />have kept six of seven riffles deep enough to provide 1.0 ft depth. 163 cfs is necessary for five out <br />of seven riffles to have the one foot depth. Based on the limited data available at this time a flow of <br />185 cfs would maintain depths suitable for fish movement on 71 % of the riffles in Strata Six. <br /> <br />Table 5.-Flows needed to provide depths of 1.0 ft. across riffles. <br /> <br /> Field Flow at <br /> River Riffle Location Flow Depth 1.0 ft <br />Strata Cluster Mile ( cfs) (ft.) ( cfs ) <br />2 1 23.9 Xsec 5 383 3.96 13 <br />3 1 45.5 Xsec 2 433 2.59 23 <br />3 3 51.5 Xsec 3 184 1.84 28 <br />4 1 53.5 Xsec 5 215 1.31 66 <br />4 2 54.0 Xsec I 215 1.55 80 <br />6 2 62.8 Xsec 2 133 0.64 336 <br />6 2 62.8 Between Xsecs 7-8 122 1.0 122 <br />6 2 62.8 Above Xsec 9 122 0.6 Unk <br />6 2 62.8 Xsec 1 135 0.9 163 <br />6 7 73.3 Below Xsec I 288 1.27 160 <br />6 7 73.3 Xsec 5 288 1.42 85 <br />6 11 77.8 Xsec 5 135 0.8 230 <br />8 3 94.0 Below Control 330 1.96 50 <br />8 3 94.0 Xsec 4 330 1.28 190 <br />8 3 94.0 Xsec 8 330 1.57 1I8 <br />8 6 115.5 Xsec 1 332 0.9 400 <br />8 6 115.5 Xsec 4 332 2.3 20 <br /> <br />For the two clusters surveyed in Strata 8, one required 400 cfs and the other 190 cfs to maintain <br />depths of at least one foot. <br /> <br />More field work is needed and is scheduled for 1997 to obtain a better sample size for the riffle <br />depths/flow relationship for both strata. We propose that up to four habitat availability stations be <br />replaced with sites know to be occupied by radio implanted squawfish and humpback chub. These <br /> <br />45 <br />