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AB 589, Bigelow. Water diversion: monitoring & reporting training - April 14, 2020 - Woodland, CA


AB 589, Bigelow.  Water diversion: monitoring and reporting training

Tuesday, April 14, 2020
Check-in begins at 2:00pm

UCCE Capitol Corridor Office
Norton Hall
70 Cottonwood Street
Woodland, CA 95776

Senate Bill 88 requires all water right holders - who have previously diverted or intend to divert more than 10 acre-feet per year (including riparian and pre-1914 claims), or are authorized to divert more than 10 acre-feet per year (under a permit, license, or registration) - to measure and report the water they divert.

Assembly Bill 589 allows any diverter, as defined, who has completed a course on measurement devices and methods administered by the University of California Cooperative Extension, including passage of a proficiency test to be considered a “Qualified Individual” who may install and maintain measuring devices or implement methods of measurement that are used for their own annual diversions as required by the California State Water Resources Control Board.

Who should attend: Anyone who is required to attend training addressing water diversion, monitoring and reporting as required by AB 589.

Pre-registration is required by April 7th; no on-site registration will be available.
Pre-registered cost: $15 via credit card (check option available). Please note no refunds will be available after April 7th.

Sign in: 2:00pm-2:30pm         Program: 2:30pm - 5:30pm

What to bring: Calculator (or phone with calculator)


  • Dr. Khaled Bali, UC Irrigation and Water Management Specialist, UC Kearney Agricultural Research and Extension Center
  • Larry Forero, UC Livestock and Natural Resources Advisor, Shasta and Trinity Counties
  • Allan Fulton, UC Irrigation and Water Resources Advisor, Tehama, Colusa, Glen and Shasta Counties

 At the workshop you will:

  • Clarify reporting requirements for ranch/agricultural operation
  • Understand what meters are appropriate for different situations
  • Learn how to determine measurement equipment accuracy
  • Develop an understanding of measurement weirs
  • Learn how to calculate and report volume from flow data

This training will move fast and will include a proficiency test.  We encourage family/staff members to attend.

Background: Beginning in the 2016 diversion season, Senate Bill 88 required that all diversions (appropriative and riparian) of over 10 acre-feet per year install and maintain a measurement device (or an acceptable alternative method of measuring) to monitor the rate of direct diversion, collection to storage and rate of withdrawal or release from storage.

SB 88 set expectations for both accuracy of the measuring devices and monitoring frequency. The installation and certification measurement methods used are required to be approved by an engineer/contractor/professional if the annual diversions are equal to or greater than 100 acre-feet per year or storage is greater than or equal to 100 acre-feet.

Assembly Bill 589 became law January 1, 2018.  The law requires the University of California Cooperative Extension and the State Water Resources Control Board to jointly develop the curriculum for the course and the proficiency test.  

Click here for more information on annual water use reporting, a summary of measurement and monitoring requirements and measurement regulation deadlines. 

If you have questions, please contact the UCCE Capitol Corridor office at 530-666-8143 or

$25.00 required charge