update on water supply conditions and drought response activities - march 26, 2015
TRANSCRIPT
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Presentation by: Dana Friehauf, Water Resources Manager
Water Planning Committee March 26, 2015
Update on Water Supply Conditions and Drought Response Activities
Drought Outlook through June 30
2 Average (1922-1998) 2013-2014 2014-2015 (current)
Northern Sierra Precipitation: 8-Station Index
Percent of Average: 79%
Current Precipitation: 31.7 inches
3
Northern Sierra Snowpack (As of March 24, 2015)
0
5
10
15
20
25
30
35
Normal 2014-2015
Wat
er C
onte
nt (
in)
8% of Normal
4
Reservoir Conditions – Lake Oroville
Average (1922-1998) 2013-2014 2014-2015 (current)
5
0%
25%
50%
75%
100%
125%
150%
175%
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015*
173%
53% 60% 65%
91%
146%
62% 59%
35%
50%
Average Water Year Statewide Runoff Percent of Average (Water Year: Oct 1 – Sept 30)
*DWR Mar. 1, 2015 Forecast for Water Year
4th Consecutive Dry Year 2012-2015
6
0%
20%
40%
60%
80%
100%
120%
140%
Prolonged Colorado River Drought Water Year Inflow to Lake Powell
*BOR Mar. 16, 2015 Forecast for Water Year
7
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 FY14 (AF) Water Use FY15 (AF)
• Figures include urban and agricultural water use • Potable Water Use in July – February of FY 2015 is 7% less than in FY 2014
8
-2.0
0.0
2.0
4.0
6.0
8.0Fiscal Year 2014 Fiscal Year 2015
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Hotter
Cooler
Average Daily Maximum Temperature at Lindbergh Field – Departure from Normal (oF)
9
-2.0
0.0
2.0
4.0
6.0
8.02013 2015
Jan Feb Mar Apr May Jun
Hotter
Cooler
Average Daily Maximum Temperature at Lindbergh Field – Departure from Normal (oF)
SWRCB monthly reporting compares 2015 water use to 2013 water use – temperatures influence water use
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SWRCB adopted emergency regulations in July 2014 Remain in effect for 270 days
Absent further actions, regulations expire April 25, 2015
March 17, 2015 SWRCB amended and readopted regulations Anticipated to become effective by
the end of the month Urban agencies have 45 days to comply
SWRCB Emergency Regulations for Urban Water Conservation
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SWRCB Emergency Regulations Three Additional Statewide Prohibitions
1. No irrigation with potable water during and up to 48 hours after measurable rainfall
2. Water served only on request in restaurants and bars
3. Hotels and motels offer patrons option of not
having towels and linens washed daily
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Implement mandatory stage of drought response plan that includes limited water days per week
Promptly notify customers when aware of leaks within customer’s control
Additional monthly reporting requirements Compliance and enforcement efforts Number of days outdoor irrigation is allowed
SWRCB Emergency Regulations Urban Water Supplier Requirements
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Date Actions
Feb. - April 2015
Staff coordinates with Member Agency Drought Advisory Team on development of proposed FY 2016 supply allocations
March 26, 2015 SDCWA Board receives monthly update on supply conditions and drought response activities
April 14, 2015 MWD Board expected to set cutback level and establish member agency allocations
April 23, 2015 SDCWA Board consider drought management actions in response to cutbacks from MWD
July 1, 2015 If MWD approves supply cutbacks, allocation period would begin
Preparing for Potential FY16 MWD Supply Cutbacks Tentative Timeline