The authority has the powers of a conservation and reclamation district under the constitution and other laws of this state, including the powers:
(1) expressly authorized in Section 59, Article XVI, Texas Constitution, for a district created to conserve, store, control, preserve, use, and distribute the storm water and 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) given by general law.