S.C. Code § 49-27-20
The three counties may by joint ordinance create the Lake Wylie Marine Commission. Upon its creation, the commission has the powers, duties, and responsibilities conferred upon it by joint ordinance subject to the laws of each applicable state. The provisions of any joint ordinance may be modified, amended, or rescinded by a subsequent joint ordinance. A county may unilaterally withdraw from participation as required by any joint ordinance or the provisions of this chapter once the commission has been created. Any county may, by ordinance, unilaterally withdraw from the commission at the end of any budget period upon ninety days' prior written notice. Upon the effectuation of the withdrawal, the commission is dissolved and all property of the commission must be distributed to or divided among the three counties and any other public agency or agencies serving the Lake Wylie area in a manner considered equitable by the commission by resolution adopted prior to dissolution.
S.C. Code § 49-27-20