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Test Release Table

September 2000

Annual 24-Month Operating Plan Forecast (Million Acre-Feet) % of Average Virgin Inflow to Lake Powell                                                    
Water Year 2000 Low Summer Steady Flows at Glen Canyon Dam (WITHOUT TEST RELEASES - in Thousand Acre-Feet)
WY 2000 WY 2001 (Recovery Period)
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Total Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Total
December 1999 7.70 100 1,053 1,060 1,000 1,000 900 800 650 650 900 1,000 1,200 1,000 11,213
Mid-Jan. 2000 4.50 58 1,053 1,060 1,009 805 605 515 500 515 550 695 745 550 8,602
January 2000 4.00 52 1,053 1,060 1,009 805 605 480 480 480 500 675 675 500 8,322
Mid-Feb. 2000 5.30 69 1,053 1,060 1,009 805 650 605 525 540 600 750 820 600 9,017
February-00 4.80 62 1,053 1,060 1,009 805 650 515 500 515 550 725 750 600 8,732
March-00 Preliminary 5.80 75 1,053 1,060 1,009 805 650 695 550 570 650 800 895 651 9,388
Mid-March 2000 6.30 81 1,053 1,060 1,009 805 650 650 625 645 670 800 895 682 9,544
March 2000 Final 6.00 78 1,053 1,060 1,009 805 650 650 600 600 650 800 895 636 9,408
April 2000 Final 6.60 85 1,053 1,060 1,009 805 650 650 625 645 680 800 895 701 9,573
May 2000 Final 5.30 69 1,053 1,060 1,009 805 650 650 625 600 600 706 800 600 9,158 600 750 915 2,265
June 2000 Final 5.40 70 1,053 1,060 1,009 805 650 650 625 600 600 750 850 683 9,335 600 750 915 2,265
July 2000 Final 4.60 59 1,053 1,060 1,009 805 650 650 625 600 600 625 641 550 8,868 550 600 800 1,050 800 750 650 700 850 1,050 1,150 1,000 9,950
August 2000 Final 4.35 56 1,053 1,060 1,009 805 650 650 625 600 600 625 600 500 8,777 550 600 800 900 700 650 650 692 800 1,050 1,150 900 9,442
September 2000 Final 4.35 56 1,053 1,060 1,009 805 650 650 625 600 600 625 600 500 8,777 550 600 800 900 700 650 650 695 800 1,050 1,150 900 9,445
Water Year 2000 Low Summer Steady Flows at Glen Canyon Dam (WITH TEST RELEASES - in Thousand Acre-Feet)
WY 2000 WY 2001 (Recovery Period)
Mid-January 2000 4.50 58 1,053 1,060 1,009 805 605 515 927 492 476 492 492 676 8,602
January 2000 4.00 52 1,053 1,060 1,009 805 605 480 882 492 476 492 492 476 8,322
Mid-February 2000 5.30 69 1,053 1,060 1,009 805 650 605 1,000 699 476 492 492 676 9,017
February-00 4.80 62 1,053 1,060 1,009 805 650 515 1,012 492 476 492 492 676 8,732
March 2000 Preliminary 5.80 75 1,053 1,060 1,009 805 650 695 1,120 860 476 492 492 676 9,388
Mid-March 2000 6.30 81 1,053 1,060 1,009 805 650 650 1,075 1,106 476 492 492 676 9,544
March 2000 Final 6.00 78 1,053 1,060 1,009 805 650 650 1,035 1,010 476 492 492 676 9,408
April 2000 Final 6.60 85 1,053 1,060 1,009 805 650 650 910 1,300 476 492 492 676 9,573
May 2000 Final 5.30 69 1,053 1,060 1,009 805 650 650 907 1,150 476 492 492 676 9,420 600 600 800 2,000
June 2000 Final 5.40 70 1,053 1,060 1,009 805 650 650 907 1,131 476 492 492 676 9,401 600 700 900 2,200
July 2000 Final 4.60 59 1,053 1,060 1,009 805 650 650 907 1,131 474 492 492 645 9,368 550 600 800 900 650 600 600 700 850 1,050 1,150 1,000 9,450
August 2000 Final 4.35 56 1,053 1,060 1,009 805 650 650 907 1,131 474 493 492 645 9,369 550 600 800 800 650 600 600 600 700 950 1,100 900 8,850
September 2000 Final 4.35 56 1,053 1,060 1,009 805 650 650 907 1,131 474 493 495 645 9,372 550 600 800 800 650 600 600 600 700 950 1,100 900 8,850
Notes:
1/ Study Period: March and April 2000.
2/ Follow-up Study: Late September 2000
3/ July 2000 Estimated Time for Reservoir to Return to Level it Would Have Been With No Studies: October 2000 through April 2001.
4/ August 2000 Estimated Time for Reservoir to Return to Level it Would Have Been With No Studies: October 2000 through August 2001.
5/ September 2000 data UNCHANGED for October 2000 Projections.

Created on 4/27/2001
By S. Loftin