Sec. 9. (a) A watershed development commission, with the approval of:
(1) the affected regional planning commission established under IC 36-7-7 or IC 36-7-7.6; and
(2) the department;
may enter into agreements with agencies in another state that are responsible for the planning or development of flood damage reduction and drainage measures in the part of the commission's designated watershed that is located in the other state.
(b) If a watershed development commission has water quality purposes under section 1(b) of this chapter, the commission, with the approval of:
(1) the affected regional planning commission established under IC 36-7-7 or IC 36-7-7.6; and
(2) the department;
may enter into agreements with agencies in another state that are responsible for water quality in the part of the commission's designated watershed that is located in the other state. However, an agreement under this subsection does not convey water quality regulatory authority to a watershed development commission.