Tex. Water Code § 57.091: PURPOSES OF DISTRICT.

A district may be created for the following purposes:

(1) to construct and maintain levees and other improvements on, along, and contiguous to rivers, creeks, and streams;

(2) to reclaim lands from overflow from these streams;

(3) to control and distribute the waters of rivers and streams by straightening and otherwise improving them; and

(4) to provide for the proper drainage and other improvement of the reclaimed land.

Acts 1971, 62nd Leg., p. 110, ch. 58, Sec. 1, eff. Aug. 30, 1971.