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Westwater Canyon YOY Chub CPE's: 1992-1996 <br />9so91o <br />960630 s <br />' <br />960815 <br />960723 ' <br />951010 <br />950905 <br />950622 <br />. <br />950808 <br />950713 <br />950622 <br />950605 <br />941020 <br />940917 <br />940818 <br />9407 <br />29 <br />940712 <br />940623 <br />- <br />940609 _ <br />940526 <br />931029 <br />930907 <br />930802 <br />930720 <br />930707 <br />930625 <br />921020 <br />920826 <br />920721 <br /> <br />' <br />920407 <br />0 0.5 1 1.5 2 2.5 <br /> .~ CPE (fish ! sq. m) <br /> -.~- below canyon -•- canyon ~- above canyon <br />Figure 6. Summary plot of YOY CPEs by trip for each sampled sub-reach.. Westwater Carryon <br />of the Colorado River, Utah; 1992-1996 <br />Catch rates above the canyon were greatest during the summer of 1993 and 1996; average to <br />above average water years. Catch rates within Westwater Canyon were less variable throughout <br />the study indicating spawning success in the canyon ~.e. humpback chub spawning success) may <br />be less dependent on the magnitude of the spring flows. Based on these five years of data there <br />appeared to be little correlation between spawning success and river flows, however some <br />relationships were evident (Table 5). <br />DRAFT <br />14 <br />