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<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 />I <br />I <br />I <br /> <br />Releases from Lake Powell in water year 2000 will continue to reflect consideration of the uses <br />and purposes identified in the authorizing legislation for Glen Canyon Dam. Power plant releases <br />and BeachlHabitat Building Flows will reflect criteria based on the findings, conclusions and <br />recommendations made in the Record of Decision for the GCDFEIS pursuant to the Grand <br />Canyon Protection Act of 1992. <br /> <br />Daily and hourly releases will continue to be made according to the parameters of the ROD for <br />the GCDFEIS preferred alternative, and published in the Glen Canyon Dam Operating Criteria <br />(62 Fed. Reg. 9447, Mar. 3, 1997), as shown in the following table: <br /> <br />a e en anvon am re ease re n Ions <br />Parameter (cms) (cfs) conditions <br />Maximum flow (1) 708.0 25,000 <br />Minimum flow 141.6 5,000 nighttime <br /> 226.6 8,000 7:00 am to <br /> 7:00 pm <br />Ramp rates <br />ascending 113.3 4,000 per hour <br />descending 42.5 1,500 per hour <br />Dailv fluctuations (2) 141.6/226.6 5,000/8,000 <br /> <br />T bl 3 GI C <br /> <br />D <br /> <br />I <br /> <br />st .ct. <br /> <br />(1) to be evaluated and potentially increased as necessary and in years when delivery to the <br />Lower Basin exceeds 10,152 MCM (8.23 MAF) <br /> <br />(2) Daily fluctuations limit is 141.6 cms (5,000 cfs) for months with release volumes less <br />than 740 MCM (.600 MAP); 169.9 cms (6,000 cfs) for monthly release volumes of 740 to <br />987 MCM (.600 to .800 MAP); and 226.6 ems (8,000 cfs) for monthly volumes over 990 <br />MCM (.800 MAP) <br /> <br />December 1, 1999 <br /> <br />11 <br />