1

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

10

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