Metropolitan’s Storage Management Approach
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Transcript of Metropolitan’s Storage Management Approach
Metropolitan’s Storage Management ApproachSouthern California Water DialogueOctober 26, 2011
Metropolitan Storage Serves a Number of Purposes
Dry-Year Storage – regional drought protectionOperational Storage – seasonal regulation of imported suppliesEmergency Storage – helps protect the region from catastrophic events
Original IRP focused on developing new storage New projects/agreements have been developed
Diamond Valley Lake: > 800 TAFConjunctive Use Agreements: > 200 TAFSWP Groundwater Storage: > 1.0 MAFLake Mead Banking: 1.5 MAFDWCV Advance Delivery Account: 800 TAFDWR Contractual Storage: Can be > 400 TAF
Storage Capacity has Increased Dramatically since the 1996 IRP
Metropolitan’s Storage Capacity
0.0
1,000,000.0
2,000,000.0
3,000,000.0
4,000,000.0
5,000,000.0
6,000,000.0
Mill
ion
Acre
-Fee
t
Metropolitan Storage Is Used To Manage Variability In Imported Supplies
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
0.0
200,000.0
400,000.0
600,000.0
800,000.0
1,000,000.0
1,200,000.0
1,400,000.0
1,600,000.0
1,800,000.0
Range : 0.38 to 1.68 MAF
Historical SWP DeliveriesTable A, Article 21, and Carryover
Historical Colorado River Aqueduct Deliveries
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
0.0
200,000.0
400,000.0
600,000.0
800,000.0
1,000,000.0
1,200,000.0
1,400,000.0
Range : 0.54 to 1.26 MAF
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
2010
0
5
10
15
20
25
30
35
Inch
es
Range : 4.6 to 34.0 inches
Historical Local PrecipitationLos Angeles Civic Center 1960-2010
Local StorageDiamond Valley Lake MathewsLake SkinnerConjunctive Use GroundwaterDWR State Project Reservoirs
CRA StorageDWCV Advance Delivery
Lake Mead ICS
Location of Storage Programs Also Matters
Central Valley/SWP StorageSan Luis CarryoverSemitropic Arvin-EdisonKern DeltaMojave
Drought Management Actions
Jan Jan
Jun 2007: Board authorized advertising & outreach campaign funds
2007
Apr 2007: Cut Replenishment Programs
2008 2009 2010 2011
JanJan Jan
Jul 2007:Water Supply Allocation Plan Development Initiated
Jan 2008: Interruption of IAWP by 30%Withdraws from storage programs
Apr 2008:Commencement of Five-Year Supply Plan Actions
Feb 2008: Board approves Water Supply Allocation Plan
Apr 2009: Board approves WSAP Level 2
Apr 2011:WSAP Level 2 removed
Apr 2010: Board approves WSAP Level 2
2006 2007 2008 2009 2010 20110
1
2
3
4
2.2 1.81.1 1.0
1.72.4
Emergency Storage Storage Balance
Mill
ion
Acre
-Fee
tUse of Storage Reduced the Impact of Supply Shortages
Summary of Metropolitan’s Storage Management Approach
Coordinated operation of storage with imported and local supplies provides
Regional drought protectionSeasonal regulation of imported supplies
Emergency storage helps protect the region from catastrophic events
0.0
200.0
400.0
600.0
800.0
1,000.0
1,200.0
1,400.0
1,600.0
1,800.0
2,000.0
Hydrology Year
Mill
ion
Acre
-Fee
t
Range : 0.11 to 1.38 MAF
Forecast of MWD Table-A Supplies2009 DWR Reliability Report
Diamond Valley LakeStorage Levels
Jan-99 Jan-01 Jan-03 Jan-05 Jan-07 Jan-09 Jan-110
100,000200,000300,000400,000500,000600,000700,000800,000900,000
TAF
765 TAF
DVL: 94% of 810 TAF Maximum Storage