Tex. Spec. Dist. Code § 9013.051
(a) The district is composed of the territory described by Section 2, Chapter 18, Acts of the 55th Legislature, 1st Called Session, 1957, as amended by Section 1, Chapter 300, Acts of the 57th Legislature, Regular Session, 1961, 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 2013, 83rd Leg., R.S., Ch. 112 (S.B. 1026), Sec. 1.06, eff. April 1, 2015.