On or before April 20th of each year, the director shall determine and certify to the State Controller the amount of severance aid computed and to be allowed to water districts under Section 831 for the fiscal year. On or before May 15th of each year, the State Controller shall allocate from the Motor Vehicle Transportation Tax Fund the amount of severance aid computed and to be allowed to water districts for the current fiscal year as so certified.

The Department may charge or allocate the amounts so transferred to the appropriate particular projects on account of which the severance aid was computed.