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<br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Figure 4. Relation between discharge, temperature, and initiation of spawning migration for Colorado SquaWtish, <br />Yarnpa River, 1981-83 and 1988. a = average daily discharge; T = average daily temperature (USGS <br />records, Yampa River near Maybell, Colorado). Solid vertical lines = dates first and last radio-tagged <br />fish exhibited movement to spawning ground; dashed vertical line = average date radio-tagged fish <br />exhibited migratory movements; n = number of radio tagged fish (fromTyus and Karp 1989). <br />