Impacts of Drought on Water Supply and Conservation Efforts
Discover the impacts of drought on Palo Alto's water supply, including the reliance on snowpack, conservation measures implemented by authorities, and the need for alternative water supply options in case of prolonged drought conditions. Explore images and data illustrating the challenges faced and strategies undertaken to address water scarcity.
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Presentation Transcript
Impacts of Drought Facilities Managers Meeting February 11, 2015 1
Palo Altos Water Supply 100% of Potable water from SFPUC Mostly from Hetch Hetchy, depends on snowpack Some from local reservoirs Recycled water Parks, golf course, water quality control plant Possible expansion 8 emergency wells 2
Precipitation about Half of Normal at Hetch Hetchy (October 2013-Sep 2014) 3
SFPUC Water System Storage January 1983-September 2014 4
Calls for Conservation January 17, 2014 Governor Brown declared water state of emergency and called for 20% water use reduction January 31, 2014 SFPUC asked customers to voluntarily reduce water use by 10% Immediately, Palo Alto began asking customers to cutback SCVWD called for 20% reduction (different supply source) 5
July 15, 2014 SWRCB issued emergency water use regulations August 4, 2014 Palo Alto City Council prohibitted additional water uses (beyond the Municipal Code s permanent water use restrictions): 1. Use of potable water in non-circulating fountains 2. Use of potable water to clean driveways and sidewalks 3. Landscape irrigation between 10 am and 6 pm (except for drip irrigation, soaker hoses, and hand watering) September 15, 2014 Council adopted enforcement provisions for the new water use restrictions 6
City of Palo Alto Cumulative Water Use Reduction 8
What About This Year? SFPUC says: If precipitation is at or above median precipitation: We ll be on the road to recovery of system storage. If precipitation is similar to 2007 and 2014: It will be a drier than normal year, but the results will keep us at a 10% demand reduction. If precipitation is similar to 1977: We will need to plan for a 20% demand reduction and begin consideration of alternative water supply options. 9
Questions? 11
