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<br />C;) <br />c) <br />..... <br />O~ <br />-J <br />CJ) <br /> <br />1.030(19911 .030(1993) "150\940 i( 280 $ 450 c 630\100 + 690 A 739 -760 -07700800\200 -910 x 980\848 I <br /> <br /> Nov-90 <br /> Jun-91 <br /> 00c.91 <br /> Jul-92 <br />w Jan-93 <br />E <br />i= <br /> AU9-93 <br /> Mar-94 <br /> Sop-94 <br /> Apr-95 <br /> Oct-95 <br /> 60 <br /> <br /> * i: · <br /> " 8 \-." <br /> . -<10 . <br /> . ~ .. . <br /> ;;t:o-" '! <br /> ... 00 t:. <br /> g~ + <br />t <br />+ 000\ <br /> 'I 111111 X " <br /> '\ <br /> IlJJ ax x <br /> x <br /> a Xx x <br /> "., x <br /> ~ xX <br /> ~ .. x x <br /> . .~ x . <br /> <br />. <br /> <br />. <br /> <br />.. <br /> <br />70 <br /> <br />60 <br /> <br />90 <br /> <br />100 <br /> <br />110 <br /> <br />120 <br /> <br />130 <br /> <br />140 <br /> <br />150 <br /> <br />River Mile <br /> <br />Figure 3.1. Riverwide movements of 13 radiotelemetered adult Colorado pikeminnow in <br />the San Juan River, 1991 to 1995. Dashed lines indicate the borders of the <br />"preferred" reach (RM 109.0-142.0) utilized by the majority of <br />radiotelemetered adult Colorado pikeminnow (Source: Ryden 2000a). <br /> <br />she made a 57-mile spawning migration upstream to the Mixer (Miller and Ptacek 2000), only to return <br />to the Bluff area in the autumn. Figure 3.2 shows monthly fish habitat use during the 83 ground contacts <br />made by Ryden (2000a). Runs were used the most during all months except September, when the only <br />radiotelemetry contact occWTed in a pool. Other frequently used habitats included eddies and shorelines. <br /> <br />In 1993 and 1994, a more-intensive radiotelemetry study was conducted on some of the fish noted above <br />with the purpose oflocating spawning areas and providing an in-depth view of habitat use and selection <br />(Miller and Ptacek 2000). From May through August 1993, four fish were followed, and daily and hourly <br />telemetry observations were made. In 1994, five fish were monitored during February and during the May <br />through August period. The sampling period was divided into pre-spawn (May and June), spawn (July), <br />and post-spawn (August) periods. Post-spawn data were only collected in 1993. <br /> <br />September 2000 <br /> <br />3-4 <br /> <br />Program Evaluation Report <br />