Update at the February Board of Directors meeting on the current water supply situation in San Diego and statewide.

1. Water Supply Conditions
Water Planning Committee
February 24, 2011

2. Statewide Snow Water Equivalents
February 23, 2011
Region
R i Inches
I h % Average
A
Northern Sierra 27 109
Central Sierra 29 117
Southern Sierra 29 138
Statewide 29 121
Data provided by the California Cooperative Snow Surveys 2

6. Colorado River Conditions
February 22, 2011
Upper Colorado water year 2011
precipitation to date
124% of average
Current Basin Snowpack
120% of average
Projected water year 2011
unregulated inflow to Lake Powell
104% of normal
no mal
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7. Local Precipitation
Local Precipitation
July 1, 2010 – Feb 21, 2011
Station
Actual inches % Normal
Lindbergh Field
db h ld 9.63 139
Ramona Airport
p 19.04 184
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8. Acre-feet
Total Local Reservoir Storage*
Total Local Reservoir Storage
500,000
400,000
2/22/11
300,000
300 000
200,000
,
2/22/2011:
363,900 AF
121% of Average
100,000
56,000 AF from 2/22/2010
0
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Average (2001-2010) WY 2010 WY 2011
*Includes 38 TAF of Water Authority carryover storage 8

9. Conclusion
State Water Project Table A Precipitation Outlook
March – May 2011
Allocation is 60 percent for
CY 2011
Water supply conditions are
at or above average for
precipitation, snowpack, and
reservoir storage
La Niña conditions are still
Precipitation Probability
present but are likely to A= Above Average, B= Below
transition to neutral Average, EC= Equal Chance
conditions in late Spring Source: National Weather Service
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