30 Tex. Admin. Code § 297.25
A permit is required to appropriate state water for storage in another's lawful reservoir and to divert and use water therefrom. Consent of the reservoir owner must be obtained. If the reservoir is a project of the Soil Conservation Service, U.S. Department of Agriculture, consent must be obtained from the Soil and Water Conservation District and any others having jurisdiction over the reservoir before a permit can be acquired.
Source Note:The provisions of this §297.25 adopted to be effective May 29, 1986, 11 TexReg 2330.