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<br />I <br />I <br />I, <br />I <br />I <br />I <br />I <br />I, <br />I <br />I, <br />I <br />Ii <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />OD23'J1 <br /> <br /> <br />1 <br /> <br />1/2" Mesh main net <br /> <br />10 ft. <br /> <br />Cinch rope rings <br /> <br />1995 New Bor <br />Guide rollers <br /> <br />3/16" Mesh cad end <br /> <br />Figure 2. Sieve net located at the tailwaters of Blue Mesa Powerplant. <br /> <br />unscheduled interruptions occurred, and if they did, those <br />samples were discarded. <br /> <br />Netting was performed as frequently as 5 days a week for 2 weeks <br />a month (July, August 1995) down to only 2 diel cycles per month <br />(November 1994 and 1995). A late fall sampling in November <br />proved too difficult to continue netting over the winter due to <br />rapid ice build up in the net and frame. More frequent sampling <br />was most desirable but net repair, powerplant operations, and <br />personnel availability limited the number of samples collected. <br /> <br />The net sampled 24 percent (27% in 1994) of the flow of turbine <br />number 1 and when both turbines were operating at equal <br />capacities, the net sampled 12 percent (13% in 1994) of the total <br />water being released. Release rates were determined from a power <br />curve relationship between the megawatts generated and the volume <br /> <br />7 <br />