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49 <br />Stanford and Ward (1986b) reported flow regulation to decrease the <br />number of backwaters replenished during peak spring flow periods. <br />Haynes et al. (1984, 1985) suggested high flows to be important in <br />flushing sediments from spawning substrate as well as filling (with water) <br />backwaters used by young-of-water Colorado squawfish. <br />Holden (1980a, b) speculated that discharge may be related to <br />availability of Colorado squawfsh young-of-year habitat. <br />Miller et al. (1982c) cited a decrease in frequency of overbank flows to <br />be one of the major effects of flow regulation by dams. <br />o An inverse relationship exists between discharge and areas of in-channel <br />backwaters suitable for Colorado squawfish, for most sites investigated in the <br />Colorado River Basin. • <br />Archer et al. (1986) reported all backwaters observed at several sites on <br />the Green River were transformed to flowing waters when discharge rose <br />from 800 to 4000 cfs. <br />Pucherelli and Clark (1989) reported the area of backwaters in the Green <br />River above Desolation Canyon to be maximized at 1000-1800 cfs, a <br />fairly low discharge for that reach. <br />Jones and Tyus (1985a) reported an inverse relationship between <br />discharge and availability of backwaters used by Colorado squawfish <br />larvae for sites in the Green River Basin. <br />