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<br />Recovery Implementation Program (SJRIP), the Grand Canyon Adaptive Management Work <br />MWG), the Native Fish Work Group (NFWG), and the Lower Colorado River Multi- <br />Conservation Program (MSCP). Each of these programs coordinates and conducts <br />distinct conservation, recovery, and management actions. <br />2.1 Upper Colorado River Basin <br />The upper basin RA comprises of the upper Colorado River and Green River subbasins. <br />The upper Colorado River subbasin includes the mainstem upper Colorado River and the <br />Gunnison and Dol 'vers as major tributaries. Although upstream depletions reduce total <br />river volume, there major dams in the warmwater regions of the mainstem upper Colorado <br />River, except for small diversion dams (i.e., Price-Stubs, Government Highline) that block <br />upstream fish passage near Grand Junction, Colorado. The only barrier in the Gunnison River <br />(i.e., Redlands Diversion) now has a fish passage structure; the Aspinall Unit, which consists of <br />Blue Mesa, Morrow Point, and Crystal dams, is located in the upper Gunnison River and affects <br />water delivery and temperature of the lower Gunnison River. The upper Colorado River <br />subbasin and its tributaries have about 4 of flowing, unimpeded, warmwater riverine <br />habitat. <br />The Green River subbasin includes the mainstem Green River and the Yampa, White, <br />Duchesne, and Price rivers as major tributaries. Flow of the Green River is regulated largely by <br />Flaming Gorge Dam, and there are no mainstem fish passage barriers downstream to the <br />confluence of the upper Colorado River. Flaming Gorge Dam was fitted with a temperature <br />control device in 1978 to warm releases and allow for upstre ge expansion of warmwater <br />native fishes. The Yampa River is mostly free-flowing, and t are no mainstem fish barriers. <br />Flow of the White River is regulated by Taylor Draw Dam near Rangely, Colorado, with no fish <br />passage barriers downstream. Flow of the Duchesne and Price rivers is regulated by upstream <br />dams and diversions, but the lower reaches of each tributary provide accessible warmwater <br />habitat. The Green River subbasin and its tributaries have about 875 km of flowing, unimpeded, <br />warmwater riverine habitat. <br />The ecological setting of the upper basin retains much of its historic structure <br />function (Carlson and Muth 1989). Although reduced in magnitude and frequency, t <br /> <br /> <br /> <br /> <br /> <br />6 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />,I <br />I <br />I <br />I <br />I <br />;1 <br />I <br />I <br />