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Water Scientifically

Above is the current Southern California Watering Index provided by MWD. The Watering Index is a percentage that is calculated from scientific data and used to establish a recommended setting for the water budget adjustment feature. The index is normally 100 percent for the hottest time of the year in Southern California - much of July and August. Over the course of the year the Watering Index changes to reflect the landscape’s changing need for water as climatic conditions change.

:: home > Conservation

Landscape Guides

In Corona, more than 60% of water is used outdoors for irrigating landscape. With a few landscape changes, you have the opportunity to significantly cut your outdoor water consumption.

water-efficient garden

Here are some resources to help you on the way to a more water-efficient landscape:

  • Water-Saving Plant Palettes
    DWP staff developed four water-saving plant palettes using information from Metropolitan Water District's Garden Spot site. Check out our plant palettes to find the right water-saving plants for your home.
  • Sample Garden Plans
    We've put together some sample garden plans complete with plant lists. Now you can see how simple it can be to transform your landscape from water-thirsty to water-thrifty.
    See the sample garden plans...
    Live in Eagle Glen? We have HOA-approved plans for you.
  • Purveyors of Plants Meet Drought Demands (and suggest you do the same) Watch this short, but informative video on how plant growers are saving water by growing more drought-resistant varieties. Watch now on YouTube...
  • Drip Irrigation Guide
    Considering installing drip irrigation? Please read our Drip Irrigation 101 Guide for more information.
  • Irrigation Supply Discounts
    The City of Corona Department of Water and Power has teamed up with local businesses to provide water-efficient sprinkler nozzles and smart irrigation controllers at discounted rates of between 10% to 50% off. Click here for a list of our landscape partners.
  • Composting
    Yard trimmings and food residuals together constitute 24% of the United States' municipal solid waste stream. This is a lot of waste to send to landfills when it could become useful and environmentally beneficial compost instead!

    Composting offers the obvious benefits of resource efficiency and creating a useful product from organic waste that would have gone to the landfill.

    The Riverside County Waste Management Department holds composting workshops and sells composting bins to all residents of Riverside County. For more information, please call (951) 486-3200.

    For additional information and helpful tips on composting, please visit the following websites:

    - U.S. Environmental Protection Agency
    - Riverside County Waste Management Department
  • Trained Landscapers
    The DWP offers a course on efficient irrigation to landscapers and contractors who have an active Business License in Corona.  If you need assistance with landscaping or irrigation, consider using one of these companies: Trained Landscape Contractors
  • Inland Empire Garden Friendly logoInland Empire Garden Friendly
    Inland Empire Friendly gives Inland California gardeners a single place to find garden events, workshops, plant sales, and more. Many local garden shops carry plants with the Inland Empire Friendly logo signifying that they are suitable for our climate zone.
  • Inland Gardening Tips
    Check the Inland Empire Waterwise Gardening site for tips specific to the needs of gardeners our area: Inland Empire Waterwise Gardening.