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<br />I <br /> <br />I <br />I <br />I <br /> <br />I <br /> <br />I <br />I <br />I <br /> <br />t <br />I <br />I <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br />I <br /> <br />I <br /> <br />I <br /> <br />0fJ239S <br /> <br />transducer. As a result, ADeps use multiple beams pointed in <br />different directions to measure cwo or three orthogonal velocity <br />components. Beams are positioned 90 degrees apart horizontally and at <br />an angle of 20 or 30 degrees from vertical. Appendix E presents <br />details of ADCPs and a diagram of the boat mounted system used in this <br />study. <br /> <br />RESULTS <br /> <br />Powerplant Sieve Netting <br /> <br />Five fish species were collected; kokanee salmon (Oncorhynchus nerka) , <br />lake trout (Salvelinus namaycush), rainbow trout (Oncorhynchus <br />mykiss), white sucker (Catostomus commersoni) and brown trout (Salmo <br />trutta). Kokanee salmon constituted 96 percent of the fish collected <br />from the sieve net over 3 years. Appendix A presents specific <br />information on dates, time, and numbers of fish collected. The sieve <br />net was fished for a total of 120 hours (June 30 - November 29) in <br />1994, producing 15 fish, 495.1 hours (April 26 - November 2) in 1995, <br />producing 720 fish, and 155.2 hours in 1996, yielding 147 fish (June <br />25 - August 29). <br /> <br />Stream runoff and consequent dam discharge, was lower in 1994, <br />compared to either 1995 and 1996, with 1995 the highest water year <br />with all dam discharges above about 3295 CFS being bypassed through <br />hollow-jet valves into the river below the dam. Also, in 1995 and <br />1996 both generators were run on a relatively regular schedule during <br />the spring and summer. <br /> <br />Blue Mesa Powerplant 1995 <br />AVERAGE TOTAL LENGTH OF COllECTED KOKANEE <br /> <br />160 <br /> <br />\50 <br /> <br /> <br /> <br />140 <br /> <br />~ <br />E \30 <br />E <br />~ <br />..c: 120 <br />0. <br />c:: 110 <br />~ <br />-a loa <br />- <br />o <br />Eo< 90 <br /> <br />80 <br /> <br /> <br />70 <br /> <br />60 <br />a'""f,....:,.Q.Mw...~N~a"~'.l~:I'i'.w~~""'f'w:..6-J'f1~"~~17~a..J'f~I.J8I-A:A~~~A~iA~"~~...:.- <br /> <br />TIME <br /> <br />Figure 4. <br />net at Blue <br /> <br />Average kokanee size collected <br />Mesa Powerplant, 1995. <br />11 <br /> <br />by <br /> <br />seive <br />