Water Supply Conditions presentation provided at the May 22, 2014 San Diego County Water Authority Water Planning Committee Board Meeting. Presented by Lesley Dobalian, Water Resource Specialist

1. Final Snow Survey Location:
Phillips Station near Echo Summit,
Water Supply Conditions
Water Planning Committee
May 22, 2014
Presented by: Lesley Dobalian
Water Resources Specialist

2. 2
“Year’s Final Snow Survey Comes Up Dry”
DWR May 1, 2014 Press Release
Manual and electronic readings
recorded statewide snowpack’s
water content at a mere 18% of
average

3. 3
0%
25%
50%
75%
100%
125%
150%
175%
2006 2007 2008 2009 2010 2011 2012 2013 2014*
173%
53%
60% 65%
91%
146%
62%
59%
35%
Average Water Year Statewide Runoff
Percent of Average (Water Year: Oct 1 – Sept 30)
*May 1, 2014 forecasted water year runoff

4. 4
MWD 2014 Water Supply and Demand Balance
Water Balance Acre-Feet
Total Supplies 858,000
Colorado River 755,000
State Water Project 103,000
Estimated Member Agency Demands 1,922,000
New Water Balance -1,064,000
 Excludes Water Authority Colorado River Transfers
 Negative balance made up through storage and other supplies
 Actual balance may change as year progresses
Source: MWD May 12, 2014 Water Surplus and Drought Management Plan Report

5. 5
Source: MWD May 12, 2014 Water Planning and Stewardship Committee
 Due to reduced storage reserves, MWD may need to implement its
Water Supply Allocation Plan in 2015 if conditions continue to be dry

6. 6
Fiscal Year Potable Water Use in
Water Authority Service Area
20,000
40,000
60,000
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Acre-Feet
Water Use FY13 (AF) Water Use FY14 (AF)
July – April of FY 2014 is 3% more than in FY 2013
Warmer Nov – Apr in FY 2014

7. 7
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Fiscal Year 2013 Fiscal Year 2014
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Average Daily Maximum Temperature at
Lindbergh Field - Departure from Normal (˚F)
Hotter
Cooler
Ave Daily Max Temp:
FY 2014: January – April was 4.2˚F warmer than normal

8. 8
Temperature Outlook
June – August 2014
Summer Outlook
“Chance of El Niño increases during the remainder of
the year, exceeding 65% by summer.” May 12, 2014
Climate Prediction Center