30 Tex. Admin. Code § 297.15
A Texas Water Code (TWC), §11.143, permit authorizes anyone owning a dam or reservoir on the person's own property with normal storage of not more than 200 acre-feet of water for domestic and livestock purposes or wildlife management purposes, to take state water therefrom for any lawful purpose authorized in the permit. (A permit is not required to use water from such a reservoir for domestic and livestock or wildlife management purposes.) Reservoirs on navigable streams are not exempt under TWC, §11.142. Application requirements and procedures are less detailed than those required for TWC, §11.121, permits. It may be permanent in nature, seasonal, or granted for a term of years. The owner of an exempt impoundment under TWC, §11.142, who subsequently desires to use state water therefrom for other than domestic and livestock, or wildlife management purposes may elect to apply for a permit under TWC, §11.143, or proceed under the provisions of TWC, §11.124, et seq.
30 Tex. Admin. Code § 297.15