(a) At the direction of the board, the trust company shall make disbursements from the fund to another fund or account pursuant to a bond enhancement agreement authorized by § 15.435 in the amounts the board determines are needed for debt service payments on or security provisions of the board’s general obligation bonds or revenue bonds, after considering all other sources available for those purposes in the respective fund or account.
(b) Of the money disbursed from the fund during the five-year period between the adoption of a state water plan and the adoption of a new plan, the board shall undertake to apply not less than:
(1) 10 percent to support projects described by § 15.435 that are for:
(A) rural political subdivisions; or
(B) agricultural water conservation; and
(2) 20 percent to support projects described by § 15.435, including agricultural irrigation projects, that are designed for water conservation or reuse.