The district is composed of the territory described by Section 1, Chapter 9, Special Laws, Acts of the 41st Legislature, 4th Called Session, 1930, as referenced by Section 1, Chapter 43, Acts of the 57th Legislature, 3rd Called Session, 1962, as that territory may have been modified under:

1. (1) Section 6601.105 or its predecessor statute, Section 11, Chapter 43, Acts of the 57th Legislature, 3rd Called Session, 1962;
2. (2) Chapter 4, Title 128, Revised Statutes, before August 30, 1971;
3. (3) Subchapter G, Chapter 53, Water Code, before September 1, 1995;
4. (4) Subchapter J, Chapter 49, Water Code; or
5. (5) other law.

Acts 2003, 78th Leg., ch. 1277, Sec. 1, eff. April 1, 2005.