Ag Alert. October 4, 2023

CIMIS REPORT | www.cimis.water.ca.gov

CALIFORNIA IRRIGATION MANAGEMENT INFORMATION SYSTEM

For the week of September 21 - September 27, 2023 ETO (INCHES/WEEK)

YEAR

3.0

THIS YEAR

2.5

LAST YEAR AVERAGE YEAR

2.0

1.5

1.0

0.5

0.0

MACDOEL II (236)

BIGGS (244)

DAVIS (06)

MANTECA (70)

FRESNO (80)

SALINAS-SOUTH (214)

FIVE POINTS (2)

SHAFTER (5)

IMPERIAL (87)

THIS YEAR LAST YEAR AVG. YEAR % FROM AVG.

0.86 1.03 0.94 -7

1.08 1.04 1.12 -6

1.15 1.09 1.24 -7

1.09 1.17 1.08 0

1.20 1.37 1.19 1

1.05 1.09 1.05 3

1.17 1.28 1.35 -13

1.23 1.33 1.22 1

1.58 1.58 1.53 4

W eekly reference evapotranspiration (ETo) is the rate of water use (evapotranspiration—the sum of soil evaporation and crop transpiration) for healthy pasture grass. Multiplying ETo by the appropriate “crop coefficient” gives estimates of the ET for other crops. For example, assume ETo on June 15 is 0.267 inches and the crop coefficient for corn on that day is 1.1. Multiplying ETo by the coefficient (0.26 inches x 1.1) results in a corn ET of 0.29 inches. This

information is useful in determining the amount and timing of irriga- tion water. Contact Richard Snyder, UC Davis, for information on coefficients, 530-752-4628. The 10 graphs provide weekly ETo rates for selected areas for average year, last year and this year. The ETo information is provided by the California Irrigation Management Information System (CIMIS) of the California Department of Water Resources.

For information contact the DWR district office or DWR state headquarters:

SACRAMENTO HEADQUARTERS: 916-651-9679 • 916-651-7218

NORTHERN REGION: Red Bluff 530-529-7301

NORTH CENTRAL REGION: West Sacramento 916-376-9630

SOUTH CENTRAL REGION:

SOUTHERN REGION:

Fresno 559-230-3334

Glendale 818-500-1645 x247 or x243



2023 Health & Safety on the Farm and Ranch

Enjoy a special bourbon and a locally sourced dinner to benefit the California Farm Bureau Federation Fund to Protect the Family Farm (FarmPAC ® ).

Ticket: $125 Purchase tickets by Thursday, Nov. 9

WHEN: Friday, November 17 WHERE: CE Becker & Sons 298 Biggs East Hwy Biggs, CA 95917

California Farm Bureau is pleased to offer this year-long program of training sessions presented by Nationwide. Select topics will be presented in both English and Spanish. Members, enjoy access to free classes! Register for the upcoming training webinars. Trainings will be presented via Zoom. The Hazardous Agricultural Materials (HAM) training must be attended in person at a participating County Farm Bureau office or at the California Farm Bureau office in Sacramento. For a list of class dates and to register, visit cfbf.com/FBE or call (800) 698-FARM for assistance. You will receive a Zoom link and details two days prior to your selected webinar date.

To purchase tickets and for sponsorship opportunities, visit cfbf.com/farmpac or scan the QR code.

Event Hosts: Butte, Colusa, Glenn, Plumas-Sierra, Tehama and Yuba-Sutter County Farm Bureaus.

16 Ag Alert October 4, 2023

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