Wat. Code, § 74200.5

(a) Notwithstanding any other provision of this part, the local agency formation commission, in approving either a consolidation of districts or the reorganization of two or more districts into a single water conservation district may, pursuant to subdivisions (k) and (n) of Section 56886 of the Government Code, increase the number of directors to serve on the board of directors of the consolidated or reorganized district to 7, 9, or 11, who shall be members of the board of directors of the districts to be consolidated or reorganized as of the effective date of the consolidation or reorganization.

(b) Unless the local agency formation commission provides for an alternative schedule for reducing the size of the board of directors of the consolidated or reorganized district, upon the expiration of the terms of the members of the board of directors of the consolidated or reorganized district whose terms first expire following the effective date of the consolidation or reorganization, the total number of members on the board of directors shall be reduced until the number equals 5, 7, or 9, as may be determined by the local agency formation commission in approving the consolidation or reorganization.

(c) In addition to the powers granted under Section 1780 of the Government Code, in the event of a vacancy on the board of directors of the consolidated or reorganized district at which time the total number of directors is greater than five, the board of directors may, by majority vote of the remaining members of the board, choose not to fill the vacancy. In that event, the total membership of the board of directors shall be reduced by one board member. Upon making the determination not to fill a vacancy, the board of directors shall notify the board of supervisors of its decision.