Cal. Wat. Code § 35520.44
The board annually, concurrently with the making of the estimate required by Section 36552, shall adopt a resolution setting forth an estimate of the amount of money needed for the purposes of the drainage service area for the next fiscal year. The amount shall be sufficient to raise interest accruing and principal maturing during the fiscal year on outstanding bonds of the district issued for the drainage service area, incidental expenses of the service area, and the cost of the care, operation, management, or improvement of the works of the drainage service area, or that part of the costs as the board determines is to be raised by assessment. The amount of the assessment to be borne by each zone shall be computed by multiplying the total amount to be raised by assessment by the percentage of benefits accruing to each zone as declared by the board.
In the resolution to be adopted pursuant to this section, the board shall provide for a public hearing upon the assessment to be levied and shall specify a time and place when all interested persons may appear and be heard. Notice of the hearing shall be given by publishing a copy of the resolution in a newspaper of general circulation, published in each affected county, pursuant to Section 6066 of the Government Code, the first publication to be at least 14 days prior to the time fixed for the hearing. A copy of the resolution shall be mailed, postage prepaid, to each holder of title to land within title within the drainage service area as shown upon the last equalized assessment book of the district. Any error, omission, or mistake in the mailing, or any failure of any person to receive a copy, shall not invalidate the proceedings pursuant to this section.
The hearing may be adjourned from time to time at the discretion of the board, and, at its conclusion, the board shall, by resolution, levy an assessment upon all lands within each zone sufficient to raise the amount stated in the estimate of the board as revised, if revised, at the hearing. Assessments made within each zone of benefit established pursuant to this chapter shall be levied on all lands within the zone of benefit on an acreage basis.
Ca. Water Code § 35520.44