Tex. Spec. Dist. Code § 9049.004
(a) The district is composed of the territory described by Section 2, Chapter 246, Acts of the 58th Legislature, Regular Session, 1963, as amended by Sections 1 and 3, Chapter 611, Acts of the 60th Legislature, Regular Session, 1967, as that territory may have been modified under:
(b) The boundaries and field notes of the district form a closure. A mistake in the field notes or in copying the field notes in the legislative process does not affect:
Added by Acts 2015, 84th Leg., R.S., Ch. 855 (S.B. 1162), Sec. 1.06, eff. April 1, 2017.