Indiana Code Title 14. Natural and Cultural Resources § 14-26-1-10

(1) The water resources development fund created by IC 14-25-2-4.

(2) Appropriations that the general assembly makes available to the commission for these purposes.

(1) the sale of water from impoundments;  or

(2) payments made by persons or corporations, private or public, who have contracted with the commission for the maintenance by the commission of certain minimum quantities of stream flow;