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<br />" <br /> <br />e <br /> <br />. \'t>-- <br /> <br />e <br /> <br /> <br />Basin including reservoir evaporation 1S currently about 4.0 MAF which leaves <br /> <br />about 10.0 MAF that will be scheduled for future development, meeting downstream <br /> <br />commitments and maintaining instream values. <br /> <br />As projected use 1ncreases to 4.9 MAF by 1990, 5,4 MAF by 2000, and ultimately <br /> <br />5.8 MAF by 2030, the average annual flow at Lee Ferry will decrease from 10 MAF <br /> <br />at present to 9.1 MAF in 1990, 8.6 MAY in 2000 and 8.2 MAF in the year 2030. <br /> <br />These additional reductions 1n flow will affect the percentage of natural flow <br /> <br />1n the Upper Colorado River streams as shown in Table 2. <br /> <br />Tab Ifh 2* <br />percentage of present development <br />Natural Present <br />flow (1980) 1990 2000 <br /> <br />Estimated future flows as a <br /> <br />River basin <br />Upper Green River <br />(above Flaming Gorge) <br />Yampa River <br />Duchesne River <br />White River <br />Total Green River <br />(above Green River, Utah) <br /> <br />Upper Main Stem <br />(Colorado River above Cameo) <br />Gunnison River <br />Dolores River <br />Total Colorado River <br />(above Cisco, Utah) <br /> <br />Upper San Juan River <br />(above Navajo Dam) <br />Total San Juan River <br />(above Bluff, Utah) <br /> <br />Total Colorado River <br />(above Lee Ferry, Arizona) <br /> <br />100 <br />100 <br />100 <br />100 <br /> <br />78 <br />99 <br />37 <br />100 <br /> <br />74 <br />98. <br />37 <br />79 <br /> <br />71 <br />95 <br />29 <br />76 <br /> <br />volume <br /> <br />2010 <br /> <br />67 <br />93 <br />29 <br />74 <br /> <br />2030 <br /> <br />62 <br />93 <br />29 <br />74 <br /> <br />100 <br /> <br />71 <br /> <br />85 <br /> <br />79 <br /> <br />7S <br /> <br />73 <br /> <br />100 <br />100 <br />100 <br /> <br />46 <br />100 <br />100 <br /> <br />42 <br />99 <br />89 <br /> <br />38 <br />99 <br />86 <br /> <br />36 <br />99 <br />86 <br /> <br />36 <br />99 <br />86 <br /> <br />100 <br /> <br />65 <br /> <br />72 <br /> <br />68 <br /> <br />66 <br /> <br />65 <br /> <br />100 <br /> <br />89 <br /> <br />" <br /> <br />89 <br /> <br />89 <br /> <br />89 <br /> <br />89 <br /> <br />70 <br /> <br />100 <br /> <br />82 <br /> <br />69 <br /> <br />67 <br /> <br />70 <br /> <br />100 <br /> <br />61 <br /> <br />75 <br /> <br />67 <br /> <br />64 <br /> <br />64 <br /> <br />The remaining percentage of the natural flow indicates those streams which, we <br /> <br />believe, have been and will be most severely impacted. Even with this knowledge, <br /> <br />however, that streams such as the Duchesne could be reduced 70 percent in volume <br /> <br />'- <br /> <br />\... <br /> <br />! ' <br /> <br />--:-', <br /> <br />",-. ('.. ;-" <br /> <br />. i <br /> <br />.-/ <br /> <br />'-.' <br />