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  1. #1
    Senior Member JohnDoe2's Avatar
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    Whiting: Changing weather may affect tap water

    Published: Nov. 27, 2012 Updated: 7:01 p.m.

    Whiting: Changing weather may affect tap water




    BY DAVID WHITING
    COLUMNIST
    THE ORANGE COUNTY REGISTER
    dwhiting@ocregister.com

    Some say the great wars of the future won't be about oil, but about water.
    With drought conditions in most areas west of the Mississippi, is it time to bar windows, bolt doors and hoard water?
    UC Irvine's Soroosh Sorooshian stands near a Google Earth image of the planet displayed on a large HIPer Wall video monitor. The global map can show estimated rainfall over variable time periods in near real time. The data his team at Center for Hydrometeorology and Remote Sensing produces is available free to the public. H. LORREN AU JR., THE ORANGE COUNTY REGISTER

    The good news, according to hydrology experts, is that unlike vast parts of the world such as central Africa and the Midwest there are no worries in Orange County.

    For the foreseeable future.

    The problem is that science's crystal ball only sees so far.

    But Soroosh Sorooshian, director of UCI's Center for Hydrometeorology & Remote Sensing, is doing everything he can to peer further into our future.

    Fortunately, he has help from some of the most sophisticated technology on and above the planet.
    I sit in a conference room outside Sorooshian's office and wish I had the giant screen on the wall in my family room. Of course, I'd waste it watching the Lakers.
    Sorooshian monitors things like real lakes.

    The screen is 10-foot by five-foot and shows rainfall everywhere on Earth. With a computer click, Sorooshian zooms in on an area, checks out landcover such as trees, jungle, deserts lakes and reviews rainfall in the last 72 hours.

    If you're used to checking out weather online, that may sound like no big deal.
    But realize that satellite photos only show clouds and estimate storm severity. They don't tell you how much rain is really falling.

    With support from the Department of Commerce, the National Oceanic Atmospheric Administration, the U.S. Army and NASA, Sorooshian's team uses sophisticated satellites backed with radar and ground gauges to measure rainfall.
    In millimeters.

    For a farmer in Vietnam or in California's Central Valley the information is available free online the rainfall numbers are a quantum leap from technology only a decade ago.

    Yes, you may not care so long as your faucet works. But if you've ever reached for the tap and found nothing but air something that occurred in parts of Southern California in the late 1950s you understand that knowing how much rain falls matters.
    When Sorooshian started specializing in hydrology, the field didn't carry the weight it does today.

    In the early 1970s, the planet seemed like, well, the water planet.
    Sorooshian is quick to point out that hasn't changed. Earth has the same amount of water. But the big question isn't about how much water we have.

    Sorooshian frames the big question this way: "Is the water coming to where you want it?"

    Consider the tragedy in the Darfur region of the Sudan. Many agree the origin of the conflict stems from people having to move because of changing rainfall patterns.

    Closer to home, we see rain pelting the East while the central U.S., the nation's breadbasket, experiences extreme drought.

    Sorooshian, distinguished professor of civil and environmental engineering, understands the importance of rain first hand. He grew up on a farm in Iran in an area known to be one of the world's most fertile for thousands of years.

    Now, he sees his family's old pistachio groves dying of thirst.
    But changing weather is only one thing that troubles Sorooshian.
    In 1990, the global population was 5.2 billion, including 250 million Americans. By 2008, those figures jumped, respectively, to 6.7 billion and 304 million.
    In a decade, global population is projected to climb to more than 8 billion, with the number of U.S. residents estimated at 352 million.

    Sorooshian points out that countries across the globe are using water like never before, to build cars, homes, make bread.

    Think about how much water is used to make a single loaf, including everything from growing wheat, to maintaining a bakery.

    The Orange County Water district states that to make a single slice of bread, it takes 11 gallons of water.

    To manufacture a car 39,090 gallons.

    The Middle East, Sorooshian explains, is in the midst of a drought and even the CIA is interested in how tensions over water will play out.

    So why haven't we heard more about water?

    "Everything else is so huge," the professor says, "no one pays attention to it."

    But they will.
    Sorooshian says historical conflicts over the Colorado River Basin may be an example of things to come elsewhere.

    The Colorado River which Orange County drinks "was the most litigated water basin in the world."

    If you've been to lakes Powell or Mead, both reservoirs, you've seen why there are water fights. Water year 2011 was one of the driest in four decades. Water levels are low.

    Sorooshian notes that tree rings in the basin indicate mega droughts over hundreds of years. Is the current drought mini or mega?

    As an answer, Sorooshian shows me two climate model projections for the decades ahead. One shows more water. The other, less.

    "We don't yet have the science where we can predict. Nature is complicated."

    If we're in the early stages of a mega drought, Sorooshian says, "The Dust Bowl was nothing compared to what we'll see."

    Fortunately, Sorooshian calls Orange County water "a model with a system that has resiliency with backup resources."

    Along with the Colorado River, Orange County gets its water from a variety of sources including Northern California's snow pack, storm water from the Prado Dam and recycled water. Much is stored in the county's groundwater basin.
    Additionally, South Coast Water District, which serves coastal communities in South County, is testing desalinization.

    But in an interdependent world, are places like Orange County enough to prevent water from becoming the new oil?
    As we make our way across the globe using Sorooshian's map, I think of my recent visit to Joshua Tree National Park. There's a trail that promises a lake. There's even a shiny sign at the site describing the lake.

    But there isn't a lake, only powder-dry desert.

    A student who passed her doctoral exam only an hour ago drops by Sorooshian's
    office. Her thesis offers ways to make rainfall measurements even more accurate.

    Let's drink or sip to that.

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    Whiting: Changing weather patterns may affect tap water | water, sorooshian, county - Home - The Orange County Register
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    Senior Member HAPPY2BME's Avatar
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    The situation in Southern California is much more dire due to it's total dependence on the man-made and artificial California Aqueduct, which is entirely exposed.

    If the California Aqueduct was cut off, tens of millions of Southern Californians would be instantly without water. Like the same day they could wake up and literally have no tap water.
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    Senior Member JohnDoe2's Avatar
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    Quote Originally Posted by HAPPY2BME View Post
    The situation in Southern California is much more dire due to it's total dependence on the man-made and artificial California Aqueduct, which is entirely exposed.

    If the California Aqueduct was cut off, tens of millions of Southern Californians would be instantly without water. Like the same day they could wake up and literally have no tap water.
    It seems you have no concept of water being stored in reservoirs.

    List: http://en.wikipedia.org/wiki/List_of_largest_reservoirs_of_California
    Name County(s) Coordinates Volume[n 1] (acre-feet) Volume (km3) Outflow[2][n 2] Dam[n 3] Image
    Shasta Lake Shasta 4045′15″N 12221′13″W / 40.75417N 122.35361W / 40.75417; -122.35361 (Shasta Lake)[3] 4,552,000[4] 5.615 Sacramento River Shasta Dam
    Lake Oroville Butte 3932′14″N 12129′00″W / 39.53722N 121.4833333W / 39.53722; -121.4833333[5] 3,537,577[6] 4.364 Feather River Oroville Dam
    Trinity Lake Trinity 4051′36″N 12243′24″W / 40.86N 122.72333W / 40.86; -122.72333[7] 2,448,000[8] 3.020 Trinity River Trinity Dam
    New Melones Lake Tuolumne,
    Calaveras
    3800′02″N 12031′12″W / 38.00056N 120.52W / 38.00056; -120.52[9] 2,400,000[10] 2.960 Stanislaus River New Melones Dam
    San Luis Reservoir Merced 3704′04″N 12107′52″W / 37.06778N 121.13111W / 37.06778; -121.13111[11] 2,041,000[12] 2.518 San Luis Creek[n 4] San Luis Dam
    Don Pedro Reservoir Tuolumne 3744′30″N 12022′25″W / 37.74167N 120.37361W / 37.74167; -120.37361[13] 2,030,000[14] 2.504 Tuolumne River New Don Pedro Dam
    Lake Berryessa Napa 3831′53″N 12209′49″W / 38.53139N 122.16361W / 38.53139; -122.16361[15] 1,602,000[16] 1.976 Putah Creek Monticello Dam
    Lake Almanor Plumas 4013′47″N 12109′29″W / 40.22972N 121.15806W / 40.22972; -121.15806[17] 1,308,000[18] 1.613 North Feather River Canyon Dam
    Folsom Lake Sacramento 3843′26″N 12107′03″W / 38.72389N 121.1175W / 38.72389; -121.1175[19] 1,120,200[20] 1.382 American River Folsom Dam
    Lake McClure Mariposa 3738′11″N 12016′49″W / 37.63639N 120.28028W / 37.63639; -120.28028[21] 1,024,600[22] 1.264 Merced River New Exchequer Dam
    Pine Flat Lake Fresno 3649′57″N 11919′33″W / 36.8325N 119.32583W / 36.8325; -119.32583[23] 1,000,000[24] 1.233 Kings River Pine Flat Dam
    New Bullards Bar Reservoir Yuba 3923′32″N 12108′30″W / 39.39222N 121.14167W / 39.39222; -121.14167[25] 996,103[26] 1.229 North Yuba River New Bullards Bar Dam
    Diamond Valley Lake Riverside 3340′42″N 11702′30″W / 33.67833N 117.04167W / 33.67833; -117.04167[27] 810,000[28] 0.999 Domenigoni Creek[n 5] West Dam
    Lake Tahoe[n 6] Placer, El Dorado, Douglas (NV), Washoe (NV) 3904′59″N 12002′03″W / 39.08306N 120.03417W / 39.08306; -120.03417[29] 732,000[30] 0.903 Truckee River Lake Tahoe Dam
    Lake Havasu San Bernardino, Mohave (AZ), La Paz (AZ) 3423′00″N 11414′33″W / 34.3833333N 114.2425W / 34.3833333; -114.2425[31] 646,200[32] 0.797 Colorado River Parker Dam
    Lake Isabella Kern 3538′47″N 11828′56″W / 35.64639N 118.48222W / 35.64639; -118.48222[33] 568,000[34] 0.701 Kern River Isabella Dam
    Clear Lake Reservoir Modoc 4150′59″N 12110′14″W / 41.84972N 121.17056W / 41.84972; -121.17056[35] 527,000[36] 0.650 Lost River Clear Lake Dam
    Millerton Lake Fresno, Madera 3659′51″N 11941′36″W / 36.9975N 119.69333W / 36.9975; -119.69333[37] 520,500[38] 0.642 San Joaquin River Friant Dam
    Camanche Reservoir San Joaquin, Amador, Calaveras 3813′26″N 12058′04″W / 38.22389N 120.96778W / 38.22389; -120.96778[39] 431,000[40] 0.532 Mokelumne River Camanche Dam
    Lake Sonoma Sonoma 3843′05″N 12300′34″W / 38.71806N 123.00944W / 38.71806; -123.00944[41] 381,000[42] 0.470 Dry Creek Warm Springs Dam
    Lake Nacimiento San Luis Obispo 3544′40″N 12054′14″W / 35.74444N 120.90389W / 35.74444; -120.90389[43] 378,480[44] 0.467 Nacimiento River Nacimiento Dam
    Hetch Hetchy Reservoir Tuolumne 3756′21″N 11943′32″W / 37.93917N 119.72556W / 37.93917; -119.72556[45] 360,000[46] 0.444 Tuolumne River O'Shaughnessy Dam
    Lake San Antonio Monterey 3552′13″N 12100′19″W / 35.87028N 121.00528W / 35.87028; -121.00528[47] 335,000[48] 0.413 San Antonio River San Antonio Dam
    Castaic Lake Los Angeles 3431′12″N 11836′23″W / 34.52N 118.60639W / 34.52; -118.60639[49] 323,700[50] 0.399 Castaic Creek[n 7] Castaic Dam
    New Hogan Lake Calaveras 3809′03″N 12048′47″W / 38.15083N 120.81306W / 38.15083; -120.81306[51] 317,000[52] 0.391 Calaveras River New Hogan Dam
    Prado Flood Control Basin[n 8] Riverside 3354′33″N 11737′07″W / 33.90917N 117.61861W / 33.90917; -117.61861[53] 314,400[18] 0.389 Santa Ana River Prado Dam
    Clear Lake[n 9] Lake 3903′42″N 12249′38″W / 39.06167N 122.82722W / 39.06167; -122.82722[54] 313,000[55] 0.386 Cache Creek Cache Creek Dam
    Indian Valley Reservoir Lake 3907′31″N 12232′34″W / 39.12528N 122.54278W / 39.12528; -122.54278[56] 300,600[57] 0.371 North Fork Cache Creek Indian Valley Dam
    Cherry Lake Tuolumne 3800′20″N 11954′25″W / 38.00556N 119.90694W / 38.00556; -119.90694[58] 274,300[59] 0.338 Cherry Creek Cherry Valley Dam
    Lake Casitas Ventura 3423′09″N 11920′08″W / 34.38583N 119.33556W / 34.38583; -119.33556[60] 254,000[61] 0.313 Coyote Creek[n 10] Casitas Dam
    Whiskeytown Lake Shasta 4037′41″N 12233′51″W / 40.62806N 122.56417W / 40.62806; -122.56417[62] 241,100[4] 0.297 Clear Creek[n 11] Whiskeytown Dam
    Union Valley Reservoir El Dorado 3852′35″N 12024′00″W / 38.87639N 120.4W / 38.87639; -120.4[63] 230,000[18] 0.284 Silver Creek[n 12] Union Valley Dam
    Stampede Reservoir Sierra 3928′38″N 12008′26″W / 39.47722N 120.14056W / 39.47722; -120.14056[64] 226,500[65] 0.279 Little Truckee River Stampede Dam
    Twitchell Reservoir Santa Barbara, San Luis Obispo 3500′44″N 12018′25″W / 35.01222N 120.30694W / 35.01222; -120.30694[66] 224,300[67] 0.277 Cuyama River Twitchell Dam
    Pardee Reservoir Amador, Calaveras 3815′27″N 12051′01″W / 38.2575N 120.85028W / 38.2575; -120.85028[68] 209,950[69] 0.259 Mokelumne River Pardee Dam
    Hell Hole Reservoir Placer 3903′33″N 12024′35″W / 39.05917N 120.40972W / 39.05917; -120.40972[70] 208,400[71] 0.257 Rubicon River Hell Hole Dam
    Lake Cachuma Santa Barbara 3435′12″N 11958′52″W / 34.58667N 119.98111W / 34.58667; -119.98111[72] 205,000[73] 0.253 Santa Ynez River Bradbury Dam
    http://en.wikipedia.org/wiki/List_of_largest_reservoirs_of_California
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    INLAND: Little space available to store surplus water | Breaking ...

    www.pe.com/.../20110711-inland-little-space-available-to-store-surpl...
    Metropolitan Water District of Southern California expects by year's end to have the highest storage levels since 1928 in its regional reservoirs, ...
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    RED ALERT! NEED YOUR HELP MAKING CALLS
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    Eastside Reservoir Project (Diamond Valley Lake), California ...

    The Diamond Valley Lake is the largest reservoir in Southern California and has a ... The dams, which were completed in December 1999, required the ... "The three dams, built in Riverside County, hold back 987 million cubic metres of water.
    Metropolitan water district project
    The Diamond Valley Lake is the largest reservoir in Southern California and has a capacity to hold around 800,000 acre-feet (260 billion gallons) of water. At a cost of $1.9bn, the Diamond Valley Lake almost doubled the storage capacity for the Metropolitan Water District of Southern California (MWD).
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    1. San Vicente Dam at height - San Diego Union-Tribune
      www.utsandiego.com/photos/galleries/.../san-vicente-dam-height/
    2. Oct 16, 2012 – The San Vicente Dam has now reached its new full height of 337 feet. The San Diego County Water Authority raised the dam 117 feet to more than double capacity...

    Dam project raises water security - San Diego Union-Tribune
    www.utsandiego.com/news/2012/.../dam-project-raises-water-security...
    Oct 16, 2012 – As construction of the newly raised San Vicente Dam nears completion, the San Diego County Water Authority offered a preview of the structure ...
    When the finishing touches are completed next summer, it will have the capacity to hold 242,000 acre-feet, or 78 billion gallons, of water.
    That’s more than double its earlier volume of 90,000 acre-feet, and enough to serve more than a million people for a year, said project manager Kelly Rodgers. . .
    Last edited by JohnDoe2; 11-28-2012 at 03:49 PM.
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    Senior Member HAPPY2BME's Avatar
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    Those lakes and dams are great. But with tens of millions of users and tens of thousands of businesses and industry constantly draining them, they had better have a reliable water source.

    And the California Aqueduct feeds how many of those reservoirs that feed all the major So. Cal. metro areas?
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  9. #9
    Senior Member JohnDoe2's Avatar
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    Overall, Southern California gets it’s water from a variety of sources. Groundwater sources provide between 30 and 40 percent of supply, and the remainder is imported from the Owens Valley, the Colorado River, and the State Water Project.
    Where does Southern California’s water come from?


    Posted by: Maven on April 29, 2008 at 8:16 am

    California is a beautiful fraud; a magnificent put-on, an exquisitely lush illusion. From the farmlands of the Central Valley to the swimming pools, green lawns and flowering landscapes of Southern California, it is all a brilliantly engineered masterpiece, an extensive rearrangement of the existing natural order, created by the ingenuity and will of man, and costing
    billions of taxpayer dollars in the process. The palm trees, the tropical flora and fauna, as well as the millions of people, all of it does not belong here. Not any of it.

    In the West, it is said that water flows uphill towards money, and nowhere else could that be truer than here in Southern California. About half of the water that flows freely from our taps started as snow in the Sierra Nevada Mountains, and has traveled 444 miles from Northern California. It has leapt up 3000 feet to traverse the Tehachapi Mountains, and traveled through gigantic siphons, pumps and tunnels to reach us.

    WATER DEVELOPMENT WAS KEY TO CALIFORNIA'S GROWTH
    As early as 1900, Los Angeles had already outgrown its meager water supply, the Los Angeles River. William Mulholland found the water the growing city needed in the Owens Valley, and embarked on an ambitious project to bring it here. And ever since then, California has remade its landscape on an unprecedented scale. There are reservoirs where there once was desert, desert where there once was cropland, and cropland where there once was a swampy marsh. Some rivers have been dried up; some rivers flow through mountains into other rivers' beds; and some rivers even flow backwards at times.

    Since the Gold Rush era, California has been transformed from a vast, sparsely populated area into one of the world's leading agricultural and food production regions. Much of this development is due to the development of the area's natural resources, most especially water. Water development, storage and distribution projects have transformed deserts into farmland and supported development of large cities and towns. These water projects have helped make California a leading agricultural producer, a major manufacturing
    center, the most populated state in the country, and the eighth largest economy in the world.

    However, this rapid and intensive development has not been without its consequences. Fish populations have been depleted, wetlands have been drained, and dams and levees have altered natural water flow patterns. Native species of many plants have declined or become extinct, and water quality has been impaired by agricultural, mining and urban sources.

    IT NEVER RAINS IN CALIFORNIA \”..
    No other state has rearranged their environment to the same extent as California. The truth is, most of California is an arid semi-desert, with a climate similar to that of the North African Plain. Los Angeles is drier than Beirut. About 65 percent of the state receives less than 20 inches of rainfall per year, most of that in the winter months. While 70 percent of California’s runoff occurs north of Sacramento, 75 percent of California’s urban and agricultural demands are to the south.

    The abundant sunshine and mild temperatures of Central and Southern California are ideal for agriculture; the only ingredient missing is the rain. California's rainfall is seasonal : dry during the hot summer months, and wet for only a few months in the winter. Still, California has more irrigated acreage than any other state, thanks to massive water projects started early in the twentieth century and still continuing today.

    WATER PROJECTS AND THE STATE'S ECONOMY

    Water development has three primary goals: flood control, water storage, and hydroelectric power generation. California is home to four massive water projects, plus numerous local projects. The map to the right shows the water projects located throughout the state. The Los Angeles Aqueduct brings water from the Owens Valley south to Los Angeles. The Colorado River Aqueduct brings water from the Colorado River to Southern California for urban uses, and the Imperial Irrigation District operates the Imperial Dam and All-American Canal, which supply water for irrigation in the Imperial Valley. The Central Valley Project irrigates farmland in the Central Valley and provides water to the Bay Area; the State Water Project brings water from the San Francisco Bay Delta and delivers it to farmers in the Central Valley, as well as providing water for urban uses in Southern California. In addition, the Hetch-Hetchy Aqueduct and the Mokelumne Aqueduct supply water to the Bay Area. Click on the map above to see it enlarged and to visit the DWR website.



    Moving water around the state is an energy intensive process. Total energy used to pump and treat water accounts for at least 6.5% of total electricity used statewide. The State Water Project is the state’s largest single consumer of electricity, accounting for 2 to 3 percent of electrical energy use per year. Hydroelectric power does produce a portion of this energy back, but whether the project is a net user or net producer of energy depends upon the distance the water must be moved. In most cases, more energy is used than is produced by these projects.

    Water fuels the economy of California, and managing it properly is of paramount importance. It has also been a source of decades-long political wars. Besides the satisfying the needs of a growing population, demands for more water also comes from the agricultural industry, businesses, manufacturers and developers. These needs must be balanced against demands for protecting water quality and for protecting fisheries, wildlife and recreational interests. The fundamental controversy is one of distribution, as conflicts between these competing interests continue to be exacerbated by continued population

    growth and periods of drought.

    Everything depends on the manipulation of water : capturing it behind dams, storing it in reservoirs, and rerouting it in concrete rivers over hundreds of miles. California has twelve hundred major dams, the two biggest irrigation projects on earth, and some of the biggest reservoirs in the country. Only about 25% is for urban use, the remainder is split between irrigation and environmental purposes.

    AGRICULTURE IS IMPORTANT TO THE CALIFORNIA ECONOMY

    One out of every six jobs in California is tied to agriculture in some way. California has the largest agricultural economy in the nation; half of the nation's fruits, nuts, and vegetables are grown here. About 20% of the nation's milk supply comes from California; 92% of all grapes grown in the United States are grown here. Cotton, foliage and flowers are also in the top 10 agricultural commodities produced in California. Fresno is the most productive county in the nation, with an agricultural worth of 3.5 billion dollars in 2000.

    WHERE DOES SOUTHERN CALIFORNIA’S WATER COME FROM
    Overall, Southern California gets it’s water from a variety of sources. Groundwater sources provide between 30 and 40 percent of supply, and the remainder is imported from the Owens Valley, the Colorado River, and the State Water Project.

    Where you live in Southern California determines where, exactly, your water comes from.

    Metropolitan Water District is a regional wholesaler of groundwater and imported water from the Colorado River and the State Water Project, which it sells to it’s 26 member agencies. Each of these member agencies also has varying amounts of local resources of their own, so the extent of dependence upon imported water & Metropolitan Water District varies. The Colorado River Aqueduct supplies San Diego and the southern portion of Metropolitan Water District’s service area, while State Water Project generally serves the northern portion of MWD’s service area.
    If you live within the DWP service area, your water comes from the Owens Valley Aqueduct, groundwater, and Metropolitan Water District.

    You can find out more about where your water comes from by clicking here. You can also find out more information by consulting your agencies website, and reading their water plan.

    THE LOS ANGELES AQUEDUCT

    Owned and operated by the Los Angeles Department of Water and Power, the Los Angeles Aqueduct supplies a portion of the water needed to supply the residents and businesses in it’s 465 square mile service area. The Los Angeles Aqueduct system includes 8 storage reservoirs along the aqueduct, and 99 reservoirs and tanks located within the city.

    In the year 2005-2006, the Owens Valley supplied 48% of the water for DWP; Metropolitan Water District supplied 41%, groundwater sources provided 11%, and only 1% was recycled. About 72% of water use in DWP’s service area is for residential use; 25% is for commercial & goverment, and 3% is for industrial use. (Click here for DWP Fact sheet.)

    The Los Angeles Aqueduct system brings water 338 miles from the Mono Basin and 233 miles from the Owens Valley by gravity to Los Angeles. The first Los Angeles Aqueduct was completed in 1913. It took five years to build at a cost of $23 million. Water from the Owens Valley travels through 24 miles of unlined
    open channel, 37 miles of lined open channels, 97 miles of concrete conduit, 43 miles of tunnels, 12 miles of steel and concrete pipe, 8 miles of reservoirs, 2 miles through the Haiwee bypass, and 10 miles through power tunnels and waterways to reach Los Angeles. The second Los Angeles Aqueduct was completed in 1970 at a cost of $89 million, and utilizes a mix of concrete conduit and steel pipelines.
    In order to acquire the necessary water rights, the city purchased much of the land in the Owens Valley. DWP still remains the largest private land owner in the Owens Valley area. LADWP owns 314,000 acres, primarily on the Owens Valley floor. Of this, 260,000 acres are leased back to residents mostly for ranching, with a small portion for leased for commercial or recreational use. LADWP leases the land for ranching under strict guidelines designed for maximum protection of the watershed.


    The dewatering of the Owens Valley has not been without it’s ill effects on the Owens Valley and on Mono Lake. The export of water south to Los Angeles decimated a thriving agricultural community, dried up Owens Lake, and turned parts of the Owens Valley into a desert. Environmental mitigation for the damage done has been litigated for decades, and currently, DWP is under court mandated obligation to keep water in the Lower Owens River and provide dust control on the dry Owens Lake bed. Furthermore, DWP is prevented from diverting water from the Mono Lake Basin until the lake level reaches a mandated elevation – which is a long way off. This has resulted in a reduction in the amount of water that DWP can export from the Owens Valley.

    Some say that Los Angeles stole the water from the Owens Valley, and whether this is true or not is a subject of debate. Others say that the land management policies of the DWP have discouraged extensive urban development, and have thusly spared the Owens Valley the problems associated with increased urbanization. To this day, Inyo County remains one of California’s least populated counties. The area is also a popular recreation destination, offering camping, fishing, hiking, rock climbing, and many other outdoor activities. More on these issues in the Aquafornia article, California’s Water Crisis.

    For more information on the Los Angeles Aqueduct System:


    THE COLORADO RIVER
    Shortly after completion of the Los Angeles Aqueduct, booming population growth and drought sent Mulholland and the City looking for additional water sources. In 1928, the Metropolitan Water District was organized as a public corporation, pursuant to special legislation enacted by the state legislature. The legislation provided a way for cities and smaller governmental entities to join together to develop a regional water supply. The 13 original members of the MWD are Anaheim, Beverly Hills, Burbank, Compton, Fullerton, Glendale, Long Beach, Los Angeles, Pasadena, San Marino, Santa Ana, Santa Monica, and Torrance. MWD has since added another thirteen members.

    Today,the Metropolitan Water District is by far the largest water agency in California, if not the entire United States. MWD serves 18 million customers over 5200 square miles, a service area extending from Ventura County down to San Diego.


    The Metropolitan Water District manages the 242-mile long Colorado River Aqueduct, which extends from Parker Dam at Lake Havasu, Arizona, to Lake Matthews, near Riverside. The Colorado River Aqueduct’s capacity is 1.3 million acre-feet annually. The water travels through 63 miles of canals, 92 miles of tunnels, 55 miles of conduit, and 144 underground siphons. Metropolitan’s water system includes 5 pumping plants, 9 water treatment plants, and 9 reservoirs, with a total capacity of 1,972,000 acre-feet of water storage.

    The Colorado River is the principal water resource for seven states & parts of Mexico. Spanning 1,440 miles from Wyoming to the Gulf of California, the Colorado River is the most litigated river in the entire world. Water in the river is governed by a complex set of interstate compacts, international treaties, Supreme Court decrees, federal laws, state laws, water contracts, and administrative decisions which together have become known as “The Law of the River”.


    The Law of the River includes the 1922 Colorado River Compact, which apportions water use among the seven states, and outlines a priority system for use of the water. A 1944 U.S.-Mexico treaty allocated 1.5 MAF to Mexico. California’s basic apportionment from the Colorado River is 4.4 million acre-feet, plus surplus water if available. The U.S. Secretary of the Interior is the designated “water master” for the Colorado River, and has authority to declare when surplus or shortage conditions exist.

    California’s annual use of the Colorado River water has varied between 4.5 to 5.2 million acre-feet of water over the last ten years. The additional water over the California’s basic allocation has come from surplus conditions and unused apportionments of water by Arizona. However, these surplus conditions aren’t likely to continue much farther into the future, with persistent drought conditions in the Colorado River basin and with Arizona approaching full use of it’s apportionment.


    Of California’s 4.4 million acre-feet apportionment from the Colorado River, 3.8 million acre-feet or 86% of that water goes mostly to the Imperial Valley, and to a much lesser extent, the Palo Verde Irrigation District near Blythe, the Yuma Project, and the Coachella Valley Irrigation District. The water rights held by these irrigation districts predate the 1922 Colorado River Compact. These “present perfected” water rights entitle them to receive their water allocation in all years – dry or wet – over other lower priority users. Metropolitan holds a fourth priority right to 550,000 million acre-feet of water, and a fifth priority right to another 662,000 MAF.

    Increasing use of the Colorado River by Arizona and other states of their previously unused apportionments, along with diminished supplies due to persistent drought conditions and climate change could eventually reduce the amount of water available to Metropolitan to only its fourth priority right of 550,000 million acre-feet, plus what water could be made available from conservation programs with the Imperial Irrigation District and other agricultural-to-urban water transfers.

    For more information on the Colorado River:

    • From the Metropolitan Water District website, The Colorado River – click here.
    • From the Metropolitan Water District website, California’s Colorado River Allocation – click here.
    • From the University of Arizona Water Resources Research Center, “Sharing Colorado River Water: History, Public Policy and the Colorado River Compact – click here.


    THE STATE WATER PROJECT

    The California Department of Water Resources designed, built, and operates the State Water Project. It is the largest state-built water and power project in the United States. The State Water Project begins at Lake Davis in Northern California, and spans 600 miles south to Southern California. It includes 34 storage facilities, 20 pumping plants, four pumping-generating plants, 5 hydroelectric power plants, and about 700 miles of canals, tunnels and pipelines. The State Water Project provides drinking water for 23 million people and irrigation water for 750,000 acres of farmland.
    The 29 water agencies that buy SWP water have contracted for long-term deliveries of nearly 4 million acre-feet of water. About 70% of water delivered by the State Water Project is for urban use; the remaining 30% is for agricultural use. The Metropolitan Water District’s entitlement is for 2,011,500 million acre-feet, or about 47% of the total water delivered by the SWP. The Kern County

    Water Agency’s entitlement is for 1,153,400 million acre-feet, or about 27% of the total. The remaining 26% of the water is split between the remaining 27 water agencies.

    Although contractors hold entitlements to 4.2 million acre-feet of water, rarely is the water project able to deliver that much. On average, the State Water Project delivers between 2.5 million & 3.5 million acre-feet of water. The lowest amount of water ever delivered was 0.55 million acre-feet during the drought of 1991. For more background information on the State Water Project:

    • History of the State Water Project – click here.
    • Aquafornia Exclusive: Photo Tour of the State Water Project – click here.

    THE DELTA : THE HUB AND THE CRITICAL LINK OF THE CALIFORNIA’S WATER SYSTEM


    Nearly two-thirds of the state's population and millions of acres of farmland receive their water from the Sacramento-San Joaquin Delta area, also known as the Bay-Delta. The Delta is located where the Sacramento and San Joaquin rivers converge and flow into the San Francisco Bay. The mixture of fresh waters from the five rivers which feed into the Delta combine with the salty ocean water to create the largest estuary on the West Coast of North America. The 940 square-mile Delta area is home to over 750 different species of plants and animals.


    The Delta is home to millions of migratory waterfowl that use the Pacific Flyaway every year from South America to Alaska. The Delta is also home to many species of fish, including salmon, steelhead fish, and the Delta smelt. The population of the Delta smelt fish has seen a rapid decline in the past two years, falling to its lowest level ever measured. The Delta smelt are considered an indicator of the biological health of the Delta, and their population has dropped so precipitously that some scientists fear they are on the brink of extinction. Other species, such as the Chinook salmon, are threatened as well.

    The Delta pumps provide drinking water to more than 20 million people; and water agencies in central and southern California are dependent upon it, both directly and indirectly. 42% of the state's annual runoff flows through the maze of islands, marshes and sloughs of the Delta. Massive pumps at the southern end of the marsh pull approximately 5.5 million acre-feet per year of fresh water from the waterways to feed both the Central Valley Project and the State Water Project.

    RECENT COURT DECISIONS REGARDING FISH AND WATER PROJECTS


    However, these pumps suck in and kill significant amounts of fish, and these pumps have been the subject of a lawsuit recently. In December of 2006, the California Sportfishing Protection Alliance filed suit in Alameda County Superior Court that the SWP does not have the proper permits to take (kill) certain fish species, such as the endangered Delta Smelt. In March of 2007, the judge agreed and ruled that the pumps must be shut down within 60 days unless the state acquires the proper permits from the Department of Fish & Game. (It is important to note that the ruling is based on a lack of paper permitting, rather than the impact on threatened species.)
    In August of 2007, Judge Wanger confirmed his earlier decision that the state and

    federal pumps operating in the Delta were in violation of the Endangered Species Act, and issued a court ruling restricting the amount of water that can be exported from the Delta in order to protect the endangered Delta smelt. This has reduced the amount of water that can be exported from the Delta during the months of January through June, and as a result, water contractors have been told to expect only 35% of their allocation of State Water Project water for 2008.

    In April of 2008, Judge Wanger ruled once again that another federal permit was in violation of the Endangered Species Act, this time for the salmon. Wanger ruled that the water projects were affecting the salmon in a subsequent hearing in August of 2008; however, he imposed no other restrictions at that time. More litigation is upcoming in this case, and It is unclear at this time how this will affect water deliveries in the future.

    DELTA LEVEES ARE A MAJOR CONCERN

    Besides being the hub of California’s water supply, the Delta serves many other uses. The Delta is a place where a lot of people live, and population is expected to continue to grow. There is a lot of water traffic in the Delta, with ships headed into the ports at Sacramento & Stockton. Three state highways cross the Delta, connecting the Bay Area to the Central Valley. There are also power lines, oil and gas transmission lines, and railroads throughout the area. The Delta also has more than a half a million acres of incredibly productive farmland. All of this property and infrastructure is protected by an extensive network of aging levees.

    There are 1600 miles of levees that protect the Delta and channel water through the area; most of these were built soon after the Gold Rush. Since 1850, 95% of the estuary's wetlands and tidal marshes have been leveed and filled, with resulting loss of fish and wildlife habitat.

    Much of the network of levees through the Delta has been built only to 100-year flood standards, and levees have failed 162 times in the past 100 years. Levees are susceptible to failure by erosion, seepage, rising sea levels, earthquakes, and land subsidence. If a levee failure occurred, salt water would flood many Delta islands, disrupting water deliveries to southern and central California. Water users would be forced users to rely on stored supplies. It could take several years and billions of dollars for the water system to be restored if a major levee break occurred.

    For more information on the Delta:


    THE PERIPHERAL CANAL DEBATE
    In 1960, voters passed the California Water Resources Development Bond Act, authorizing $1.75 billion for construction of the SWP. However, the funds authorized by voters were insufficient to cover the cost of implementing the plan as originally designed, and so engineers decided to convey water from Northern California to the Delta and divert water from there. A few dams and a peripheral canal to divert water from the Sacramento River around the Delta were planned for later construction.

    The original peripheral canal planned would have been large enough to carry the entire flow of the Sacramento River around the Delta, diverting fresh water away from the Delta to send it south. When the initiative went before the voters in 1982, it was soundly defeated, in large part due to the efforts of an alliance of Northern California interests. They saw the canal as a Southern California water grab that would promote unfettered growth and continued water wastage. Up until recently, the peripheral canal idea was considered the ‘third rail’ of California politics.

    THE PPIC REPORT

    However, the idea for a peripheral canal has reemerged, due in part to an influential study released in July of 2008 titled “Comparing Futures for the Sacramento-San Joaquin Delta“. The report was authored by researchers at the Public Policy Institute of California, as well as the University of California Davis. One of the central findings of the report was that “a peripheral canal \” should be part of a long term strategy for the Delta to serve both water supply and environmental objectives. Out of the four alternatives evaluated, they determined that a peripheral canal “appears to be the best way to maintain a reliable, high-quality water supply and to improve conditions for fish and other wildlife.

    The Delta as it is today, a levee-lined tidal channels surrounding deeply subsided islands, is unsustainable, researchers say. It is gradually shifting towards a estuary system with large tracts of open, deep water. The driving factors behind these changes include the subsidence (sinking) of the Delta islands, the rising sea levels, the risk of a major earthquake, and the changing inflows of water, all of which are putting stress on fragile and aging levees.


    The cost of maintaining the current levee system will become increasingly expensive, as within 50 years, researchers say it is likely many islands will be flooded permanently. Upgrading and repairing the levees in an attempt to resist these changes will soon exceed all available bond funds, and will, at some point, go beyond the willingness of the public to continue to pay these repairs.

    The PPIC Report concluded that a peripheral canal is the best option for providing a reliable, high-quality water supply for the residents of the Bay Area and Southern California, as well as for the millions of acres of farmland that depend on Delta water. A peripheral canal has the potential to benefit fish and other wildlife

    by being more responsive to the Delta's changes over time.
    But the original fears still persist. Northern Californians today are worried that if the peripheral canal were built, Delta water quality would stagnate without fresh water flows to dilute the farm runoff and municipal discharges into the estuary. This would damage Delta fisheries and threaten the fresh water supply for communities and farmers who draw their water directly from the Delta. They are also worried that if the peripheral canal were built and the state no longer dependent upon the Delta to channel water to the pumps, the Delta would be abandoned, and the fragile levees will crumble as a result of neglect and inadequate funding.

    Still, it is becoming quite obvious that ‘business as usual’ in the Delta is simply not working for anyone, and a new direction and consensus is needed.

    To read the PPIC Report:
    \” Comparing Futures for the Sacramento-San Joaquin Delta, by the Public Policy Institute of California
    Other Reports on the Delta and Peripheral Canal



    PLANNING FOR THE FUTURE OF THE DELTA
    Several planning processes for the Delta are currently underway, the two most notable being the Bay Delta Conservation Plan and the Delta Vision Blue Ribbon Task Force.

    The Bay Delta Conservation Plan
    The Bay Delta Conservation Plan is being developed with the goal of creating an ecosystem-based approach that will protect at-risk species while providing for reliability of water project operations. It is being prepared by a group of state, federal, and local water agencies, state and federal fish agencies, and environmental organizations.


    The BDCP is being prepared to meet the requirements of both federal and state endangered species laws, as well as the National Communities Conservation Planning Act. The BDCP will consider alternatives such as the restoration of floodplains, intertidal marshes, channel and openwater habitat, as well as invasive species control. The BDCP hopes to identify an improved way to move water through and/or around the Delta to create a more natural estuarine environment, as well as reduce species entrainment. This may include finding new points for diversion of water, as well as other changes to existing SWP & CVP facilities.

    One of the objectives of the BDCP is to obtain 50-year permits to operate water and energy projects and result in the issuance of ‘take' permits from the state & federal agencies for covered activities.

    The plan is currently in the scoping process, with a basic conservation strategy available around the end of 2008, with the full plan scheduled to follow mid-2009. It is hoped that by the end of 2010, the BDCP and permits will be approved.
    For more information on the Bay Delta Conservation Plan:



    Delta Vision Blue Ribbon Task Force

    In 2006, Governor Schwarzenegger formed the Delta Vision Blue Ribbon Task Force, and gave the newly formed task force the task of developing a long-term vision for sustainable management of the Delta.

    The task force first report, released in December of 2007, identified twelve ‘integrated and linked' recommendations, intended to be implemented together as an integrated solution, working in tandem to achieve success. The task force has identified two of the twelve recommendations as key elements of it's vision:
    The Delta ecosystem and a reliable water supply for California are the primary, co-equal goals for sustainable management of the Delta. Both are irreplaceable assets and one must not be secured at the expense of the other.
    The California Delta is a unique and valued area, warranting recognition and special legal status from the state of California. The Delta's uniqueness and value must be protected through special designation to safeguard its assets, its culture, and its economy.

    The task force is currently working on a Strategic Plan to implement the task force's twelve recommendations. The report is due in October of 2008. The key themes of the strategic plan are:
    \” Revitalization, not mitigation: Adopt a strategy that better supports diverse species, is less susceptible to major disruptions and increases opportunities for adaptation to changing circumstances.
    \” Sustainability, not extraction: Focus on sustainability rather than extraction or withdrawal of water; a sustainable water supply is more valuable and reliable, and will require significantly improved water use efficiency.
    \” Recognition, not abandonment: Encourage the Delta's unique character with levee improvements, support for its economic engines of agriculture and tourism, and safety improvements.
    \” Consistency, not chaos: Strengthen Delta governance to emphasize consistency of actions among existing local, state and federal agencies, guided by a clear and enforceable plan, thus enabling all four themes.

    While much attention has focused on water exports from the Delta, the task force notes that upstream diversions are also impacting the Delta. The the Hetch-Hetchy system and the Mokelumne Aqueduct divert water that would have otherwise drained into the Delta and carry it across it to the cities they serve. “You can't have your own pipes crossing the Delta with water that used to flow through the Delta and claim it has no effect,\” said Phil Isenberg, the chairman of the Delta Vision task force said in a recent Contra Costa Times article. “It isn't just them. It's us.”

    The Delta Vision Task Force meets monthly and the meetings are webcast.

    For more information on Delta Vision Blue Ribbon Task Force:



    THE DELTA – A COMPLEX AND CHALLENGING PROBLEM WHICH WE MUST SOLVE

    In January of 2008, Lester Snow testified before the U. S. House of Representatives Subcommittee on Water and Power, and said of the Delta and it’s myriad of problems: “Fixing the Delta is an incredible challenge, with multiple layers of complexity and constantly changing conditions. Notwithstanding the immensity of the challenge, California cannot afford to fail. Immediate actions are critical, but a long term comprehensive management strategy will be essential to the sustainability of the Delta.”

    GROUNDWATER


    Groundwater typically accounts for about 30% of statewide water use in a year; it can be up to 40% in a drought year. Nearly one in three Californians rely solely on groundwater to meet their needs, not only in rural areas, but also the cities of Fresno and Bakersfield. Along the central coast, 90% of the drinking water is from groundwater.

    California uses more groundwater than any other state. Even in average rainfall years, more groundwater is used then is replaced by precipitation, stream seepage, or artificial recharge systems. Annual statewide overdraft is estimated by the DWR to be approximately 1.4 million acre-feet in a normal year.

    Groundwater sources are recharged by precipitation, surface runoff, irrigation, or by using imported water injected back into the aquifer, or used in lieu of groundwater pumping. When there is no rainfall, snowfall, or other source available to recharge the aquifer, the aquifer can become overdrafted.

    Overdrafting can result in lowered water tables and increased energy costs for pumping. Overdraft can also lead to land subsidence, as well as cause sea water and other contaminants to invade the aquifer.

    Subsidence occurs when overpumping leads to the collapse of the earth's surface overlying the aquifer; it is often irreversible. Subsidence can also cause salt water intrusion into coastal aquifers.

    California is only one of two states left that has yet to enact a comprehensive statewide groundwater management system.

    Currently there are no controls over the amount drawn from underground aquifers. There is some regulation in local districts or basins which have been adjudicated by the courts, but other than that, there are no controls over extraction. To some, such a program equals a state-dictated system for a resource that historically has been considered a right of the overlying land owners. Agricultural interests oppose any regulation as they fear it would constrain pumping in drought years.

    The quality of groundwater is of concern as well. All of the state's groundwater basins are contaminated to some degree. Up until as recently as the 1970′s, it was felt that groundwater basins did not need to be protected because of the widespread belief at the time that all contaminants, including toxic chemicals, were removed by percolation through soil and sediment. However, it has since been learned that a large variety of contaminants can migrate into groundwater supplies, and groundwater supplies must be carefully protected.

    Groundwater contamination can come from landfills, leaked toxins, solvents, microbial agents, acid mine drainage and agricultural chemicals. The contaminants are usually concentrated in small sections of the basin, and can force some communities to abandon their wells and rely on imported surface water supplies.
    Unfortunately, once contamination has been detected, it is costly and difficult to remove. Some aquifers may remain contaminated for hundreds of years, or quite possibly forever. It is therefore much cheaper to prevent contamination of groundwater basins then to remediate them afterwards.

    Perchlorate is used in rocket propellants, road flares, fireworks, and air bag inflation systems. It is a chemical contaminant which is very mobile once it gets into water. Perchlorate has been showing up in an increasing number of Southern California’s groundwater sources, including Santa Clarita, Rialto, and Simi Valley. Experts have been unable to agree on a drinking water standard for perchlorate. Federal and state agencies have set different minimums, while environmentalists have pushed for more stringent standards.

    For more information:

    • Metropolitan Water District, Executive Summary of the September 2007 Groundwater Assessment Report – click here.
    • Department of Water Resource’s Groundwater Fact Sheet – click here.

    IT'S A QUESTION OF BALANCE AND SUSTAINABILITY

    Southern California is hugely dependent upon large water projects which import water from far away, and each of these water sources is facing crises and impacts as a result of the diversions. The DWP has had to reduce its usage of water in order to restore Mono Lake, restore wetlands and some flow of water to the Owens River, and to deal with dust problems on Owens Lake. Southern California has long been overusing its allocation of water from the Colorado River, and this supply is being impacted by drought and population growth in other areas who also depend on the Colorado River for their water supply. The State Water Project depends on water from the fragile Delta area, which is threatened by a breakdown in the ecosystem, rising sea levels, vulnerable levees, and increasing urbanization.

    Water is a limited resource; there is only so much of it to go around. Managing California's finite water supply in the future so that it is sustainable and reliable will require striking a balance between the three stakeholders: urban users, agricultural users, and the environment. As the state continues to grow, it's going to require rethinking in how we view and use water throughout the state, and we're all going to have to be more efficient in how we use it.
    FOR MORE INFORMATION, CHECK OUT THE OTHER SECTIONS ON THE AQUAFORNIA INFORMATION DESK:


    • Learn more about the issues facing California’s water supply and the possible solutions:California’s Water Crisis
    • Find out more about the Delta and the critical issues are facing this tiny but vital region: Why the Delta is Important
    • Saving water is something you can do today. Get an extensive list of things you can do to conserve water: Aquafornia’s Water Conservation Tips
    • Read some of the best coverage of important water issues from various newspapers: Recommended Reading
    • For links to reports and other websites: Other Resources. Also, look down the right hand column for the categorized archive of news stories and the blogroll.

    To return to Aquafornia’s home page, click here.
    Photo credits: Bureau of Reclamation, Department of Water Resources, and Thea Hess. Flickr photos are linked to the flickr website.

    http://www.aquafornia.com/where-does-southern-californias-water-come-from/
    Last edited by JohnDoe2; 11-28-2012 at 07:06 PM.
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    Senior Member JohnDoe2's Avatar
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    Quote Originally Posted by HAPPY2BME View Post
    Those lakes and dams are great. But with tens of millions of users and tens of thousands of businesses and industry constantly draining them, they had better have a reliable water source.

    And the California Aqueduct feeds how many of those reservoirs that feed all the major So. Cal. metro areas?
    Overall, Southern California gets its water from a variety of sources. Groundwater sources provide between 30 and 40 percent of supply, and the remainder is imported from the Owens Valley, the Colorado River, and the State Water Project.

    Where does Southern Californias water come from?
    HAPPY2BME likes this.
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