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<br />Colorado River - Rifle, Colorado to the Dirty Devil Arm of Lake <br /> <br />Powell .................................... 114 <br />San Juan River - Farmington to Neskahai Canyon. . . . . . . . . . . .. 117 <br />. HUMPBACK CHUB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 <br />CRITICAL HABITAT DESIGNATION BY AREA .............. 120 <br />Yampa River - Dinosaur National Monument ............... 120 <br />Green River - Dinosaur National Monument . . . . . . . . . . . . . . .. 125 <br />Green River - Desolation and Gray Canyons, Utah . . . . . . . . . . .. 127 <br />Colorado River - Black Rocks/Westwater Canyon . . . . . . . . . . . .. 129 <br />Colorado River - Cataract Canyon, Utah .................. 130 <br />Little Colorado River .............. . . . . . . . . . . . . . . .. 132 <br />Colorado River - Marble and Grand Canyons ............... 135 <br /> <br />BONYT AIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 <br />CRITICAL HABITAT DESIGNATION BY AREA .............. 142 <br />Yampa River - Dinosaur National Monument ............... 142 <br />Green River - Dinosaur National Monument . . . . . . . . . . . . . . .. 143 <br />Green River - Desolation and Gray Canyons, Utah . . . . . . . . . . .. 145 <br />Colorado River - Black Rocks/Westwater Canyon. . . . . . . . . . . .. 147 <br />Colorado River - Cataract Canyon, Utah .................. 148 <br />Colorado River - Hoover Dam to Parker Dam (Lakes Mohave and <br /> <br />Havasu) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 150 <br />SUMMARY OF PROPOSED CRITICAL HABITAT DESIGNATION . . . .. 154 <br />RIVER MANAGEMENT PRACTICES AND PROBLEMS .. . . . . . . . . .. 157 <br /> <br />BARRIERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 157 <br />WATER MANAGEMENT ............................. 159 <br />Water Depletions and Releases ........................ 161 <br />Power Marketing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 163 <br />Water Marketing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 166 <br />WATER TEMPERATURE AND SEDIMENT TRANSPORT . . . . . . .. 167 <br />CONTAMINANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 168 <br />Green River Contaminants . . . . . . . . . . . . . . . . . . . . . . . . . .. 168 <br />Upper Colorado River Basin Contaminants . . . . . . . . . . . . . . . .. 169 <br />San Juan River Contaminants ......................... 170 <br />Gila River Contaminants ...... . . . . . . . . . . . . . . . . . . . . .. 17 I <br />Salt River Contaminants ............................ 171 <br />Verde River Contaminants . . . . . . . . . . . . . . . . . . . . . . . . . .. 172 <br />Lower Colorado River Contaminants. . . . . . . . . . . . . . . . . . . .. 172 <br /> <br />MINING ....... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 <br />CHANNELIZATION AND LOSS OF BOTTOMLANDS ............. 174 <br />FISH REMOVAL PROJECTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 175 <br />NONNATIVE FISHES .................................. 177 <br /> <br />RECREATION ....................................... 181 <br />ONGOING RECOVERY EFFORTS .......................... 183 <br />UPPER BASIN .................................... 183 <br /> <br />iv <br />