Tex. Water Code § 11.02363

(a) Periodically, the advisory group shall review the environmental flow standards for each river basin and bay system adopted by the commission under Section 11.1471. In conducting a review of the environmental flow standards, the advisory group shall:

(1) work with the science advisory committee and the pertinent basin and bay area stakeholder committees and basin and bay expert science teams in a manner similar to that provided by Section 11.02362;

(2) take into consideration the work plans developed under Section 11.02362(p);

(3) analyze previous environmental flow recommendations and standards;

(4) prescribe future monitoring, studies, and activities needed to better understand the environmental flow; and

(5) validate or refine:

(A) the environmental flow recommendations;

(B) the environmental flow standards adopted by the commission; and

(C) strategies to achieve the environmental flow standards.

(b) The advisory group shall develop a biennial statewide work plan to prioritize and schedule the review of environmental flow standards under Subsection (a). The work plan must establish:

(1) the methodology used to prioritize the review of the environmental flow standards of each river basin and bay system; and

(2) a timeline for the review of the environmental flow standards of each river basin and bay system.

(c) The advisory group shall submit to the commission:

(1) any review conducted under Subsection (a), including recommendations to the commission for use in adopting rules under Section 11.1471; and

(2) the biennial work plan developed under Subsection (b).