Tex. Spec. Dist. Code § 6906.004
(a) The district is composed of the territory described by Section 2, Chapter 435, Acts of the 66th Legislature, Regular Session, 1979, 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 2007, 80th Leg., R.S., Ch. 920 (H.B. 3166), Sec. 1.06, eff. April 1, 2009.