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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 />Table 3. Glen Canyon Darn Release Restrictions <br /> <br />Parameter (cfs) (ems) conditions <br />Maximum flow (I) 25,000 708,0 <br />Minimum flow 5,000 141.6 nighttime <br /> 8,000 2266 7:00 am to <br /> 7,00 pm <br />Ramp rates <br />ascending 4,000 lID per hour <br />descending 1,500 42,5 per hour <br />Dailv fluctuations (2) 5.000/8.000 141.6/226,6 <br /> <br />Lake :\lead <br /> <br />For calendar year 200 I, the surplus condition was the criterion governing the operation of Lake <br />Mead in accordance with Article 11I(3)(b) of the Operating Criteria and Article 1I(B)(2) of the <br />Decree. The amount of additional mainstream water made available during calendar year 2001 <br />was limited to a maximum of 0,630 MAF (777 MCM), A volume of 1.5 MAF (1,850 MCM) of <br />water was scheduled for delivery to Mexico in accordance v.ith Article 15 of the 1944 U.S.- <br />Mexico Treaty and Minute No. 242 of the International Boundary and Water Commission, <br /> <br />Lake Mead began water year 2001 at elevation 1,196.72 feet (364.76 meters). with 22.4 MAF <br />(27,673 MCM) in slorage, 87 percent of the conservalion capacity of 25.877 MAF (31,919 <br />MCM), During the year, Lake Mead reached its maximum elevation of 1,197.27 feet (364.93 <br />meters) at the end of January, 2001, with 22,5 MAF (27,782 MCM) in slorage, 87 percent of <br />capacity. Lake Mead reached its minimum elevation of 1,177.95 feet (359,04 meters) at the end <br />of September 200 L <br /> <br />The total release from Lake Mead through Hoover Dam during water year 2001 was 10.492 <br />MAF (12,942 MCM), wilh an additional 0,311 MAF (383,62 MCM) being diverted from Lake <br />r..1ead by the Robert Griffith Water Project. <br /> <br />(1) May be exceeded during beach/habitat building flows. habitat maintenance flows, or <br />when necessary to manage above average hydrologic conditions. <br /> <br />(1) Daily fluctuations limit is 5,OClO cfs (141.6 ems) for months with release volumes less <br />than 0.600 MAF (740 MCM); 6,000 cf5 (169.9 ems) for monthly release volumes of 0.600 <br />to 0.800 MAF (740 to 987 MCM); and 8,000 cfs (226.6 ems) for monthly volumes over <br />0.800 MAF (990 MCM). <br /> <br />October 15, 200 1 <br /> <br />13 <br />