(a) The commissioners court of a county may order a referendum on the question of whether:
(1) flood control taxes should be increased;
(2) flood control taxes should be decreased; or
(3) an existing or proposed flood control project should receive funding.
(b) The ballot for a referendum under this section shall be printed to permit voting for or against one or more of the following propositions:
(1) “Whether the flood control tax imposed under Section 1-a, Article VIII, Texas Constitution, should be increased by (state amount of increase as a percentage or as a specific amount)”;
(2) “Whether the flood control tax imposed under Section 1-a, Article VIII, Texas Constitution, should be decreased by (state amount of decrease as a percentage or as a specific amount)”; or
(3) “Whether the following flood control projects should receive funds generated by the flood control tax imposed under Section 1-a, Article VIII, Texas Constitution (list any flood control projects designated by the commissioners court as available for funding).”

(c) If a majority of votes cast in the referendum approve an increase in the flood control tax, the flood control tax is increased. If a majority of votes cast in the referendum approve a decrease in the flood control tax, the flood control tax is decreased. A flood control project for which a majority of the votes cast at the referendum do not approve funding may not receive funds from revenue generated by the flood control tax.