A district may construct all works and improvements necessary:
(1) for the prevention of floods;
(2) for the irrigation of land in the district;
(3) for the drainage of land in the district, including drainage ditches or other facilities for drainage;
(4) for the construction of levees to protect the land in the district from overflow;
(5) to alter land elevations where correction is needed;
(6) to supply water for municipal uses, domestic uses, power and commercial purposes, and all other beneficial uses or controls; and
(7) for the construction of geothermal water conveyance systems necessary for the conservation of natural resources.
Official text of the Texas Water Code as published by the Texas Legislative Council.