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25 <br />20 <br />U <br />CD <br />III <br />15 <br />C3 <br />W <br />D <br />10 <br />w <br />5 <br />0 <br />25 <br />20 <br />U <br />cn <br />W 15 <br />c? <br />10 <br />w <br />5 <br />0 <br />I SPAWNI <br />CAMEO <br />GROWTH <br />DEVELOPMENTAL DEGREE DAYS <br />STATE LINE : 915 <br />CAMEO : 625 (68 %) <br />1992 <br />SPAWNING <br />1993 <br />CO-UT STATE-LINE I <br />GROWTH <br />................ -............................................................................................................ <br />DEVELOPMENTAL DEGREE DAYS <br />-------------------------------------- .......... <br />STATE LINE: 701 <br />CAMEO : 362 (52 %) <br />MAY JUN JUL AUG SEP OCT <br />Figure 5. Daily average main channel temperatures from May through October at two sites in the <br />Colorado River during 1992 and 1993. Cameo and Colorado-Utah state line measurements were <br />recorded by USGS and are the average of the daily maximum and minimum readings. Threshold <br />temperatures for growth and spawning for Colorado squawfish are shown with heavy black lines. <br />8