southern california water dialogue
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Southern California Water Dialogue. February 26, 2014. 2013 Hydrologic Conditions. Percent of Average Precipitation (%) Calendar Year 2013. Driest Calendar Year on Record. 2014 Hydrologic Conditions. Percent of Average Precipitation (%) 10/1/2013 – 1/31/2014. - PowerPoint PPT PresentationTRANSCRIPT
Southern California Water DialogueFebruary 26, 2014
2013 Hydrologic Conditions
Driest Calendar Year on Record
Percent of Average Precipitation (%)Calendar Year 2013
2014 Hydrologic Conditions
Driest Oct-Jan on Record
Percent of Average Precipitation (%) 10/1/2013 – 1/31/2014
Percent of Average Precipitation (%)Oct 2013 – Jan 2014
17%
2014 Hydrologic ConditionsPercent of Average Precipitation (%)
Water Year to Date
Still Below Average
41%
Statewide Impacts
Folsom Lake, Sacramento
January 2014
Almaden Reservoir, San Jose January 2014
Lake OrovilleDecember 2013
Lake Ghisolfo, CalistogaJanuary 2014
State of California Drought Emergency
Governor Brown declaration on January 17“Perhaps the worst drought California has seen since records began being kept”Calls for citizens to do their part and reduce water use by 20 percentLooks to clear the way for water transfers and exchanges
Recent EventsSecond snow survey is only 12% of normal snowpack to date (expected to improve)DWR reduced the SWP Table A Allocation to zero percent (January 31)SWRCB granted a joint DWR/USBR petition
Reduces Delta Outflow requirements to minimumProvides flexibility in Delta Cross Channel operations
OCT OCT NOV DEC JAN JAN FEB MAR APR APR MAY JUN JUL JUL AUGSEPT0
10
20
30
40
50
60
70
80
90
100
Cum
ulati
ve P
reci
pita
tion
(Inch
es)
Northern Sierra Hydrologic ConditionsEight Station Index WY 1922-2013
Max88.5
Min17.1
Avg50.446.2
4.5
17%
Before Storm
OCT OCT NOV DEC JAN JAN FEB MAR APR APR MAY JUN JUL JUL AUGSEPT0
10
20
30
40
50
60
70
80
90
100
Cum
ulati
ve P
reci
pita
tion
(Inch
es)
Northern Sierra Hydrologic ConditionsEight Station Index WY 1922-2013
Max88.5
Min17.1
Avg50.446.2
41%
12.9
4.5
After Storm
OCT OCT NOV DEC JAN JAN FEB MAR APR APR MAY JUN JUL JUL AUGSEPT0
10
20
30
40
50
60
70
80
90
100
Cum
ulati
ve P
reci
pita
tion
(Inch
es)
Northern Sierra Hydrologic ConditionsEight Station Index WY 1922-2013
Max88.5
Min17.1
Avg50.446.2
Colorado River Hydrologic ConditionsUpper Colorado Basin Snowpack
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep0.0
3.0
6.0
9.0
12.0
15.0
18.0
Wat
er C
onte
nt (i
n)
Normal
Current Water Year
Previous Water Year
9.7
96%
Before Storm
Colorado River Hydrologic ConditionsUpper Colorado Basin Snowpack
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep0.0
3.0
6.0
9.0
12.0
15.0
18.0
Wat
er C
onte
nt (i
n)
Normal
Current Water Year
Previous Water Year
11.5112%
After Storm
Probability of Surplus/Shortage Based on January 2014 Conditions
Year Surplus Shortage
2014 0% 0%2015 0% 0%2016 4% 44%2017 7% 54%2018 12% 54%2019 15% 56%2020 21% 58%
2014 Available SupplyBased on Currently Allocated Supplies
SWP: 600 TAFTable A Allocation: 0 Storage & Programs: 600 TAF
CRA: 1.2 MAFPriority 4: 550 TAFColorado System Storage & Programs: 650 TAF
Winter storms may improve the
SWP Allocation
2014 Supply and Demand BalanceBased on Currently Allocated Supplies and Demands
Supply/Demand Balance Acre-Feet SWP Supply 600,000 CRA Supply 1,200,000Total Supply 1,800,000
Total Demand 2,000,000
In-Region Storage Requirement 200,000
2014 Supply and Demand Balance
Resource Mix0.0
500.0
1,000.0
1,500.0
2,000.0
2,500.0
CRA
SWP
In-Region
SWP improvement can increase supplies
2014 Supply and Demand Balance
Resource Mix0.0
500.0
1,000.0
1,500.0
2,000.0
2,500.0
CRA
SWP
In-Region
Conservation reduces storage depletion
2006 2007 2008 2009 2010 2011 2012 2013 20140
1
2
3
4
2.2 1.81.1 1.0
1.72.4 2.7 2.4
Emergency Storage Dry-Year Storage
Mill
ion
Acre
-Fee
tMWD Storage ReservesEnd of Year Balances*
*Estimated actual storage balances, may be subject to change.
2006 2007 2008 2009 2010 2011 2012 2013 20140
1
2
3
4
2.2 1.81.1 1.0
1.72.4 2.7 2.4
Emergency Storage Dry-Year Storage
Mill
ion
Acre
-Fee
tMWD Storage ReservesEnd of Year Balances*
*Estimated actual storage balances, may be subject to change.
Storage use will vary based on actual
conditions
Heavy dependence on imported supply
and SWP Diversions
Emphasis on Conservation, Local Supplies, and Storage & Transfers
Early 1990’s 2010 IRP Strategy
Diversification of Water Portfolio
CRA
Cons
SWP
Local Supplies
Storage & Transfers
CRA S
WP
Local Supplies
Storage & Transfers
Conservation & WUE
CURRENT AS OF 051711
Regional InvestmentsReducing Reliance on ImportsRegional InvestmentsReducing Reliance on Imports
21
Conservation: 900,000 af/yr
Recycling: 335,000 af/yr
Groundwater Recovery: 111,000 af/yr
Seawater: 46,000 af/yr (planned)
Conservation represents regional actions both active & passiveRecycling & groundwater represents total regional production 2012 (MWD & member agency)Seawater represents 3 planned local projects
-
1,000,000
2,000,000
3,000,000
4,000,000
5,000,000
6,000,000
MWD Storage Capacity
13x Increase in Capacity
Desert / Coachella
Lake Mathews& Lake Skinner
Castaic & Perris
Mojave Demo & Additional Prop. 13
Diamond Valley Lake
Lake Mead Demo
Kern Delta Prop. 13 Programs
Arvin Edison
Additional Lake Mead
Semitropic
Mojave Amendment
SummaryUnprecedented conditionsMetropolitan’s IRP has prepared
Metropolitan is prepared to use storage to meet demandsWater use efficiency is key region-wide
Metropolitan is taking drought actionsWater Supply AlertConservation and Recycled Water BudgetCoordination with other agencies
Regional InvestmentsReducing Reliance on Imports
Conservation: 900,000 af/yrRecycling: 335,000 af/yr
Groundwater Recovery: 111,000 af/yr
Conservation represents regional actions both active & passiveRecycling & groundwater represents total regional production 2012 (Metropolitan & member agency)
25
Seawater: 46,000 af/yr (planned)