Okla. Stat. tit. 19, § 1218

A. Whenever a district owning facilities and property desires to sell such facilities and property and dissolve, the board of directors may adopt a resolution setting forth the proposed plan and, upon such plan being approved by three-fourths (3/4) of the residents of such district present at a meeting called for that purpose, such resolution and plan may be submitted to the board of county commissioners. B. If approved by the commissioners, the commissioners shall thereupon authorize the board of directors to carry through the plan of sale and shall further authorize the board of directors to wind up the affairs of the district, pay all debts and expenses, and distribute any excess funds to the members on an equal basis. Thereupon the district shall be dissolved as herein provided.