California Code, Fish and Game Code - FGC § 1787

(a) If the bank site owner is a public entity, that entity shall pay annually to the county in which the property is located an amount equal to the county taxes levied on the property at the time title to the bank site is transferred to that entity.  The public entity shall also pay the assessments levied upon the property by any irrigation, drainage, or reclamation district.

(b) Payments under this section shall be made on or before December 10 of each year, except for newly acquired bank sites, for which payments shall be made pursuant to subdivision (c).

(c) Payments for newly acquired bank sites shall be made within one year of the date title to the property was transferred to the state, prorated for the balance of the year from the date title was transferred to the 30th day of June following the date title was transferred, and, thereafter, payments shall be made on or before December 10 of each year.