Tex. Water Code § 11.032: RECORDS.

(a) A person who owns and operates a system of waterworks used for a purpose authorized by this code shall keep a detailed record of daily operations so that the quantity of water taken or diverted each calendar year can be determined.

(b) If the water is used for irrigation, the record must show the number of acres irrigated, the character of the crops grown, and the yield per acre. No survey is required to determine the exact number of acres irrigated.

Amended by Acts 1977, 65th Leg., p. 2207, ch. 870, Sec. 1, eff. Sept. 1, 1977.