LA gets blackballed (actually, it's just water) In this Monday, Aug. 10, 2015 photo provided by the Los Angeles Department of Water and Power, Los Angeles Mayor Eric Garcetti, in suit at center rear, and LADWP workers deposit the final batch of over 90 million "shade balls" into the Los Angeles Reservoir in the Sylmar area of Los Angeles. (Art Mochizuki/Los Angeles Department of Water and Power via AP)
LA gets blackballed (actually, it's just water)
Lexile

Los Angeles has been blackballed.
 
The city has completed a program of covering open-air reservoirs with floating "shade balls" to protect water quality.
 
City officials have dumped the last 20,000 of 96 million black balls into the Los Angeles Reservoir in Sylmar, 25 miles northwest of downtown.
 
The 4-inch-diameter plastic balls block sunlight from penetrating the 175-acre surface of the reservoir.
 
That prevents chemical reactions that can cause algae blooms and other problems, allowing the Department of Water and Power to meet U.S. Environmental Protection Agency water-quality requirements.
 
They have the added perk of aiding with the ravages of the drought and are expected to keep about 300 million gallons annually from evaporating.
 
"In the midst of California's historic drought, it takes bold ingenuity to maximize my goals for water conservation," Mayor Eric Garcetti said in a statement, noting that the effort is "emblematic of the kind of the creative thinking we need to meet those challenges."
 
The 36-cent balls also will help prevent evaporation of 300 million gallons of water annually from the 3.3 billion-gallon reservoir, the DWP said.
 
The city began using shade balls in 2008 and they now also cover the Upper Stone, Elysian and Ivanhoe reservoirs.

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CRITICAL THINKING QUESTION
How do the black balls conserve water?
Write your answers in the comments section below


COMMENTS (27)
  • owenh-ver
    8/20/2015 - 07:34 p.m.

    this article is verry interesting and i think that the shade balls are an ingenious way to help the water.

  • majorf-hol
    8/26/2015 - 05:03 p.m.

    I think that blog was interisting because i love the idea of saving water from droughtage. i wish it would have gone into greater detail about how this works. something like this is important to the human race. saving water is a good thing to do. when i grow up i hope i can work on an effort like this. if the planet is to survive we all have to work together to help protect the things we care about.

  • kolbyd-fel
    9/02/2015 - 02:16 p.m.

    The black balls are used to stop the water from evaporating.

  • coled-fel
    9/02/2015 - 02:17 p.m.

    CTQ: The black balls conserve water by reflecting the sun's rays from the water, which would cause the water to evaporate.

  • elizabetht-fel
    9/02/2015 - 02:17 p.m.

    The shade balls conserve water by preventing evaporation from occurring so that 300 million gallons of water are preserved from evaporating annually. This helps the people to have water in the midst of a drought.

  • mattv-fel
    9/02/2015 - 02:17 p.m.

    The black balls conserve the water by making it so the water wont evaporate as often. So, the water stays in the Los Angeles Reservoir for a much longer time.

  • kyleighp-fel
    9/02/2015 - 02:17 p.m.

    Black balls help conserve water by shading the water from the sun. This help prevent chemical reactions that can cause algae to bloom. It also helps with the problem of evaporation.

  • lances-fel
    9/02/2015 - 02:18 p.m.

    The black ball draw heat and block the sun from the water to keep it from evaporating they also keep animals and things out of the water.

  • garretta-fel
    9/02/2015 - 02:20 p.m.

    The black balls conserve water by blocking sunlight which evaporates the water as well as blocking chemical reactions and other problems.

  • travisb-fel
    9/02/2015 - 02:21 p.m.

    Black balls conserve water by stopping the sun from evaporating it and preventing algae spores from growing and contaminating the water.

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