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<br />12 <br />below it. It should be cautioned that this system accounts only for <br />the geo-morphology of the drainage system and allowances are not <br />made for activities or perturbations which may chap:,e the biological <br /> development of stream systems. <br /> From Flaming Gorge Dam the Green River continues 14 km through <br /> <br /> the lower end of Red Canyon before passing through the open basin <br /> of Brown's Park. The river enters a region of high canyon walls <br /> at Lodore Canyon 80 km below the dam (KBD) before joining the Yampa <br /> <br /> River at Echo Park (103 KBD) and passing through Whirlpool Canyon. <br /> At Island Park the Green River exits these canyons to meander <br /> through rolling hills before it re-enters the canyons of Split <br /> Mountain. Gorge. <br /> This area is also sparsely populated, the largest population <br /> center being Dutch John, Utah (population 263), located near Flaming <br /> Gorge Dam. Although some agriculture is practiced through Brown's <br /> Park, it is done on a limited scale and water removal for irrigation <br /> is not a significant factor affecting discharge rates of the Green <br /> River through the study area. <br /> Since closure of Flaming Gorge Dam in 1962 the character of <br /> this segment of the Green River has been altered by the regulated <br /> water releases from the dam. The seasonal flow regime has been <br /> stabilized, water temperature fluctuations have been reduced, and <br /> the natural scouring and deposition processes of the river have <br /> been changed. The effects of damming on suspended sediment are <br /> significant as water releases are nearly sediment-free. Although <br /> loading increases below the mouth of the Yampa River, levels are <br />0