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<br />" <br /> <br />Figure Page <br /> <br />13. Frequency of Colorado River peak flow dates during <br />1907-1989 (N - 83 years) and capture dates during <br />1975-1988 of razorback suckers (N - 42 fish) in spawning <br />condition (expressible sex products present) in the <br />.Grand Valley, Colorado ......................................... 40 <br /> <br />14. Mean monthly discharge of the Colorado River at the top <br />of the l5-mile reach during recent (1954-1989) and <br />historic (1902-1942) times ..................................... 50 <br /> <br />1. Daily-mean, main-channel temperatures in the upper '- <br />Colorado River in or near the l5-mi1e, reach, 1983-19,90 ......... 77 <br /> <br />viii <br /> <br />- - -.. --------------..~ <br /> <br />r""'" <br />