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INSTREAM FLOWS TO ASSIST THE RECOVERY OF ENDANGERED FISHES 15 <br />- 457,280 acre feet <br />Upper <br />Green <br />W <br />Flaming <br />Gorge - 48,800 acre feet <br />Little Snake <br />River <br />Ladore I <br />Canyon - 109,767 acre feet <br />(Rhithron) Yampa <br />Canyon Upper <br />(Potamon) Yampa <br />Jensen White _ 131,537 acre feet <br />River <br />Ouray ?---- <br />(Potamon) <br />\I/ Duchsne cup <br />-?j - River 498,000 acre feet <br />Gray <br /> <br />Desolation Price <br />?_ River - 95,609 acre feet <br />Labryinth <br /> San Rafael _ 94,000 acre feet <br />W - 1,432,082 acre feet River <br />30 % depletion of historic flow <br />Cataract <br />Colorado <br />Canyon <- <br />River <br />W <br />Powell <br />Fig. 7. Regulation of flow in the Green River system. Octagons represent storage reservoirs, reversed arrows indicate <br />transcatchment diversions, and annual flow depletions are given in acre-feet. <br />flows to flush alluvium downstream (Elliott and <br />Parker 1992). <br />Channel Encroachment by Riparian Plants <br />The inability of the regulated river to redistrib- <br />ute alluvium allows encroachment of vegetation <br />into the river channel. Dense vegetation down to <br />the low water mark (i.e., minimum flow channel) <br />is an ecological feature that now characterizes the <br />river corridor of the regulated segments of the <br />Gunnison (Stanford and Ward 1984), Colorado <br />(Graf 1978; Stanford and Ward 1986b; Osmund- <br />son and Kaeding 1991), and Green rivers (Fisher <br />et al. 1983). However, Fisher et al. (1983) also <br />provided very clear evidence that vegetation along <br />the shoreline of the Yampa River has not changed