Category Archives: California Water

IRWD Irvine Ranch Water District Sources, Use Reduction, and Rates

Posted on April 28, 2015 by Dennis SILVERMAN

  Irvine Ranch Water District Water Sources in 2013: 22% Imported from State Water Project and Colorado River Aqueduct 31% Clear Ground Water (GW) 25% Recycled Water 19% Treated GW which is used in grounds and buildings In 2015, IRWD … Continue reading →

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Orange County Water Agencies Restrictions for February 2016

Posted on April 28, 2015 by Dennis SILVERMAN

From the OC Register, we have copied for inclusion with the set of articles, the new targets for Orange County water agencies to be in force by the end of February 2016. New targets for O.C. water districts Supplier Name … Continue reading →

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California Water Projects Feeding Southern California

Posted on April 28, 2015 by Dennis SILVERMAN

Map of California Water Projects   The California State Water Project (SWP) This section is taken from the Wikipedia article on the CSWP or SWP, but specialized to the path of the water to Southern California. The SWP has 5.75 … Continue reading →

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Gary Oberts talk to OLLI on the Irvine Ranch Water District Water Sources

Posted on April 28, 2015 by Dennis SILVERMAN

Our water expert, Gary Oberts, gave a talk to the Osher Lifelong Learning Institute (OLLI) associated with UC Irvine.  His talk was on the Irvine Ranch Water District of Irvine, California, and its water sources and policies during the current … Continue reading →

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California Ground Water and Agriculture

Posted on April 25, 2015 by Dennis SILVERMAN

In a normal year, 30% of California water use comes from ground water.  In the current severe drought, 60% or more is ground water. There are 850 million acre-feet in 450 ground water reservoirs.  One half of that is unavailable … Continue reading →

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Water Consumption by Power Plants is Only 3% of Total Water Usage

Posted on April 21, 2015 by Dennis SILVERMAN

Some water use presenters point out that about 38% of our fresh water is used to cool power plants. That is true, but in most cases the water is returned to the river or lake that it came from, just … Continue reading →

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Beef in California Agriculture

Posted on April 21, 2015 by Dennis SILVERMAN

Cows in the US and California In 2015, there were 90 million cattle in the US.  Cow products brought in $44 billion in farm gate receipts.  In 2013, $5.7 billion was from exports. In 2012, there were 30 million beef … Continue reading →

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California Water Usage in Crops, and the Water Value of Almonds

Posted on April 21, 2015 by Dennis SILVERMAN

Breakdown of California Water Usage The total California water use in 2010 was about 70 million acre feet per year.  50% of that was environmental usage, 40% was agriculture (28 million AF/year), and 10% was urban (7 million AF/year).  Environmental … Continue reading →

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Water: Size of an Acre-foot of Water

Posted on April 21, 2015 by Dennis SILVERMAN

I am embarking on a short series of articles to answer questions that I have about California water.  It is in no way a comprehensive treatment of the vast system of California water.  I also am in no way an … Continue reading →

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