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effects of high steady releases on backwaters, beaches, vegetation and wildlife. Coordination within Reclamation between Operations and Maintenance will insure that unit maintenance does not impair use of all eight units at Glen Canyon during the period of high sustained releases, Table 3, Glen Canyon Dam interim flow restrictions Parameter (m3/s) (cfs) conditions I, I Maximum flow (4) 566.4 20,000 Minimum flow 141.6 " nighttime ,5,000 226.6 8,000 7:00 am to 7:00 pm Ramp rates ascending 70,8 2,500 per hour descending 42.5 1,500 per hour Daily fluctuations (5) 141.6 / 226.6 5,000 I 8,000 Lake Mead The "normal" condition will govern the operation of Lake Mead, however, if it becomes evident that water needs in the Lower Division States may exceed 9,250 MCM (7.500 MAF), the Secretary of the Interior will consult with interested parties regarding modification to the AOP. The outlook for lowest and highest monthly releases under the most probable inflow conditions for calendar year 1994 will be 695 MCM (,563 MAF) and 1,171 MCM (,949 MAF) respectively. Lake Mead is expected to finish calendar year 1993 at 26,214 MCM (21.250 MAF), which is 78 percent of capacity and approximately 9,6 m (31 feet) below the top of the conservation pool at 371.7 m (1220 feet) and 31,922 MCM (25,877 MAF), Reservoir storage elevation is projected to rise to 362.5 m (1189 feet) in February 1994, which is 78 percent of capacity or (4) to be evaluated and potentially increased as necessary and in years when delivery to the Lower Basin exceeds 10,150 MCM (8.23 MAF) (5) daily fluctuations limit of 141.6 m3/s (5,000 cfs) for months with release volumes less than 740 MCM (,600 MAF), 169,9 m3/s (6,000 cfs) for monthly release volumes of 740 to 990 MCM (,600 to .800 MAF) and 226.6 m3/s (8,ooocfs) for monthly volumes over 990 MCM (,800 MAF) 12 I I, ., I I I I I .' .t , I I I' I I I -, I