The authority has and is vested with the powers of a conservation and reclamation district under the constitution and other laws of this state, including the powers:
(1) expressly authorized by Section 59, Article XVI, Texas Constitution, for a district created to conserve, store, control, preserve, use, and distribute storm water, floodwater, and the water of the rivers and streams of the state;
(2) implied by the purposes of that section of the constitution; and
(3) conferred by general law.