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    The Anderson Dam Tunnel Project contractor installs one of two 11-foot-diameter fixed-cone valves in the diversion outlet structure. Water from the reservoir will be released through these large-diameter valves during diversion operations.
    The Anderson Dam Tunnel Project contractor installs one of two 11-foot-diameter fixed-cone valves in the diversion outlet structure. Water from the reservoir will be released through these large-diameter valves during diversion operations.
    May 28, 2026
    Reliable water starts with smart investments

    Santa Clara County’s water system is aging, and major upgrades are underway across the region to prepare for future droughts, climate challenges, and growing water needs.

    Read More
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    Close-up of the invasive golden mussel. Photo by Marcela Uliano da Silva
    Close-up of the invasive golden mussel. Photo by Marcela Uliano da Silva
    May 27, 2026
    As boating season kicks off, help protect our waters from golden mussels

    By Nai Hsueh, Director, Valley Water

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    Volunteers filled several bags of trash at the cleanup along Stevens Creek.
    Volunteers filled several bags of trash at the cleanup along Stevens Creek.
    May 27, 2026
    Volunteers remove over 14,000 pounds of trash during National River Cleanup Day

    Valley Water and the Creek Connections Action Group coordinated a countywide volunteer effort to remove litter and debris from creeks and rivers as part of this year’s National River Cleanup event. The effort highlights a shared commitment to protecting local waterways, supporting healthy ecosystems, and preventing trash from reaching the San Francisco and Monterey bays.

    This year’s cleanup efforts in Santa Clara County saw an incredible turnout:

    Read More
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  • Mobile Lab To Improve Farm Irrigation Efficiency
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  3. Mobile Lab To Improve Farm Irrigation Efficiency

Mobile Lab To Improve Farm Irrigation Efficiency

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Sprinkler Distribution Uniformity test
Sprinkler Distribution Uniformity test

What is Valley Water's Ag Mobile Irrigation Lab?

Drip irrigation Distribution Uniformity test
Drip irrigation Distribution Uniformity test

Managing and maintaining agricultural irrigation systems can be challenging.

Valley Water’s agricultural mobile irrigation lab (mobile lab) provides free technical services for growers to help improve irrigation efficiency in seasonal row crops, tree crops, greenhouse crops, nurseries, and vineyards.

The Valley Water Mobile Lab Program offers the following free services for growers in Santa Clara County:

  • Irrigation system evaluations, including
    • measuring pressures throughout system;
    • collecting volumes of water strategically in the irrigation block to estimate distribution uniformity (DU) and application rates;
    • inspecting for leaks, breaks, clogs, or other problems in system; and
    • providing a comprehensive and confidential report with system evaluation data and analysis.
       
  • Seasonal irrigation and soil moisture monitoring, including
    • installing flow meters and data loggers at individual irrigation blocks, and
    • installing soil moisture sensors and data loggers to monitor moisture levels throughout the growing season.
       
  • Seasonal crop canopy monitoring
     
  • Irrigation system design consultation
     
  • Irrigation scheduling decision support
     
  • Connecting growers to network of agency resources, including the
    • University of California Cooperative Extension (UCCE)
    • California Department of Food & Agriculture (CDFA)
    • Natural Resources Conservation Service (NRCS)
Pressure gauge during a free mobile lab survey
Pressure gauge during a free mobile lab survey
Flowmeter during a free mobile lab survey
Flowmeter during a free mobile lab survey

Why improve irrigation management?

The benefits to improving irrigation management include:

  • Maintaining or improving consistencies in crop production and quality
     
  • Reducing costs with efficient use of water and nutrient inputs
     
  • Conserving water in our semi-arid climate that features cyclical periods of drought
     
  • Conserving fertilizer
     
  • Maintaining and improving groundwater and surface water quality

How can I schedule an initial site visit?

Michael Johnson, California H2orticulture Services, performing a free mobile lab survey
Michael Johnson, California H2orticulture Services, performing a free mobile lab survey

Schedule an appointment

For more information and to schedule an appointment with mobile lab staff, contact:

  • Michael Johnson with California H2orticulture Services at 831-325-3376

Eligibility and program questions

For eligibility or program questions about this free service, contact:

  • Ashley Shannon at (408) 630-2951 or [email protected]

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