Tex. Parks & Wild. Code § 13.309
The department may agree with the United States or any appropriate agency to plan, acquire, operate, and develop projects involving participating federal aid funds on behalf of any political subdivision of this state if the political subdivision certifies to the department that:
Acts 1975, 64th Leg., p. 1405, ch. 545, Sec. 1, eff. Sept. 1, 1975.