FAQ: California Water FAQs


What are some California Water FAQs?



  An Acre-foot of water  is about 326,000 gallons.



  A family of four uses 1 acre-foot of water per year in and around the house.



  Statewide, California receives on average of 23 inches of precipitation each year.



  Joshua Tree receives an average of 4.65 inches of precipitation each year.



  Most of California’s rain falls from October through April, and most of the water

    use occurs May through September.



  About 75 % of the rain that falls in California falls north of Sacramento, while

    about 75% of the water demand (agricultural, domestic and industrial) is south

    of Sacramento.



  About 63% of annual rainfall and runoff is used by native vegetation, evaporates or

    soaks into the ground. 


  California has about 85 million acre-feet of surface and ground water available in an

    Average year.  Of that, about 36% (or 30 million acre-feet) is used for cities and

    farms;  28% (24 million acre-feet) is legally committed to the environmental purposes

    of wild and scenic rivers, wetlands and Sacramento-San Joaquin Delta outflows; and

    36%  (30 million acre-feet) flows to the ocean.



  Landscaping accounts for about 33% to 40% of home water use, showers for about

    15 % to 18%, and toilets for about 17% to 20%.



  California recycles about 401,910 acre-feet of water each year.



  The state’s 1,400 surface water reservoirs hold about 45 million acre-feet.



  In “normal” water years, ground water supplies 35% to 40% of the states water

    needs.  That percentage jumps to at least 50% in dry years.



  Given California’s growing population and increasing environmental needs for

    water, officials estimate that shortages of 3 million to 4 million acre-feet can be

     in average years by the year 2020.



  A State water shortage project typically takes 10 to 20 years to design and build.



  JBWD has about 5.8 Million gallons in storage capacity at this time.  Our average

    daily demand of 1,408,191 gallons results in 4.1 days of storage.




  JBWD produced 513,190,000 gallons of water last year.