Indiana Code Title 14. Natural and Cultural Resources § 14-25-2-1

Sec. 1. (a) Except as provided in section 8 of this chapter, the commission may provide certain minimum quantities of stream flow or sell water on a unit pricing basis for water supply purposes from the water supply storage in reservoir impoundments or parts of the impoundments that are financed by the state.  The water may be made available for direct withdrawal from the reservoir impoundment or released from the reservoir impoundment to create increased flowage beyond normal stream flow for use by the contracting party or purchaser at a downstream point.  The withdrawals or releases may not exceed the storage allocated to water supply purposes in the authorizing legislation for water supply or multiple purpose reservoir projects.

(b) This section does not abrogate, limit, or affect in any manner prior or future sales of water from reservoirs constructed for or by the department in which adequate water for incidental water supply purposes is available.