upper and lower basin coordinated operations lake powell coordinated operations
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Upper and Lower Basin Coordinated Operations Lake Powell Coordinated Operations Water Year 2011 Projected Operations CRFS Technical Committee Meeting November 16, 2010. Lake Powell & Lake Mead Operational Diagrams and Projected Conditions. 3,629. 14.7. 1/1/11 Projection. - PowerPoint PPT PresentationTRANSCRIPT
Upper and Lower BasinCoordinated Operations
Lake Powell Coordinated OperationsWater Year 2011 Projected Operations
CRFS Technical Committee MeetingNovember 16, 2010
Lake Powell & Lake MeadOperational Diagrams and Projected Conditions
1,086 10.31/1/11
Projection
1/1/11 Projection
3,629 14.71/1/11
Projection
1/1/11 Projection
Lake Powell Equalization Table
Water Year Lake Powell Elevation (feet)
2008 3,636
2009 3,639
2010 3,642
2011 3,643
2012 3,645
2013 3,646
2014 3,648
2015 3,649
2016 3,651
2017 3,652
2018 3,654
2019 3,655
2020 3,657
2021 3,659
2022 3,660
2023 3,662
2024 3,663
2025 3,664
2026 3,666
Annual Operating Plan Lake Powell Unregulated Inflow Scenarios
Inflow Scenario
2010 AOPWY 2010
2011 AOPWY 2011
August October August October
MinimumProbable
5.00 maf(42 %)
4.70 maf(39 %)
4.85 maf(40 %)
4.50 maf(37 %)
MostProbable
11.00 maf(91 %)
10.00 maf(83 %)
10.75 maf(89 %)
9.60 maf(80 %)
Maximum Probable
18.00 maf(149 %)
16.50 maf(137 %)
17.10 maf(142 %)
15.80 maf(131 %)
Water Year 2011 Operations under Interim GuidelinesScenario Initial Operational
TierApril
AdjustmentProjected
Annual Release Volume
MinimumProbable
Upper Elevation Balancing
Balancing between 8.23 and 9.0 maf
9.0 maf
MostProbable
Balancing between 8.23 and 9.0 maf
9.0 maf
Maximum Probable
Equalization controlled by
Powell Elevation 3623’
13.45* maf
*To achieve Equalization by September 30, 2011, the water year release under the Maximum Probable Inflow forecast is 13.45 maf. The powerplant capacity for WY2011 is estimated to be about 12.93 maf.
24-Month Study
ProjectedPowell
WY Unreg Inflow
ProjectedPowell Apr- Jul Unreg Inflow
ProjectedLake Powell
EOWY Elevation
w/ 8.23 maf Release
Projected Glen
Canyon WY
Release
Projected Amount of EQ
Release
ProjectedLake Mead EOWY
Elevation
Probability of EQ
Aug2010
89%10.75 maf
89%7.10 maf 3649.48 ft 11.58 maf 3.35 maf 1104.7 ft 63%
Sep2010
89%10.71 maf
89%7.10 maf 3647.26 ft 11.28 maf 3.05 maf 1102.0 ft 58%
Oct2010
79%9.60 maf
76%6.03 maf 3639.33 ft 9.0 maf 0 maf 1076.90 ft 50%
Nov2010
80%9.64 maf
76%6.03 maf 3639.83 ft 9.0 maf 0 maf 1077.69 ft 48%
Dec2010
Summary of Lake Powell and Lake Mead OperationsReview of 24-Month Study 2011 Water Year Projections
In 2011, the Equalization Elevation is 3643 ft.
Unit Number
Oct 2010
Nov 2010
Dec 2010
Jan 2011
Feb 2011
Mar 2011
Apr 2011
May 2011
Jun 2011
Jul 2011
Aug 2011
Sep 2011
1
2
3
4
5
6 (3/4 Unit)
7
8
Units Available 4.75 5.75 6.75 6.75 4.75 4.75 5.75 6.75 6.75 6.75 6.75 4.75
Capacity (kaf) 1001 1243 1450 1450 977 992 1168 1453 1406 1453 1453 933
Max (kaf) 495 810 845 865 820 1093 1350 1400 1420 1500 1415 1428
Most (kaf) 495 810 845 865 820 805 716 710 745 838 875 476
Min (kaf) 495 810 845 865 820 805 716 710 745 838 875 476
Glen Canyon Power Plant Planned Unit Outage Schedule for Water Year 2011(updated 11-01-2010)
