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          A BILL TO BE ENTITLED
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          AN ACT
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        relating to a requirement that the Texas Commission on  | 
      
      
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        Environmental Quality obtain or develop updated water availability  | 
      
      
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        models for certain river basins. | 
      
      
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               BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF TEXAS: | 
      
      
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               SECTION 1.  Section 16.012, Water Code, is amended by adding  | 
      
      
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        Subsection (h-1) to read as follows: | 
      
      
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               (h-1)  Not later than December 1, 2020, the commission shall  | 
      
      
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        obtain or develop updated water availability models for the Brazos,  | 
      
      
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        Guadalupe, San Antonio, Sulphur, and Rio Grande River basins.  The  | 
      
      
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        commission may collect data from all jurisdictions that allocate  | 
      
      
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        the waters of the rivers, including jurisdictions outside this  | 
      
      
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        state.  This subsection expires September 1, 2021. | 
      
      
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               SECTION 2.  This Act takes effect only if a specific  | 
      
      
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        appropriation for the implementation of the Act is provided in a  | 
      
      
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        general appropriations act of the 85th Legislature. | 
      
      
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               SECTION 3.  This Act takes effect September 1, 2017. |