Texas Local Government Code - LOC GOV'T § 72.001. Boundary Survey; Appointment of Surveyor

(a) If a county court finds, or is notified by the commissioner of the General Land Office, that the boundary or part of a boundary of the county is not sufficiently definite, the county court shall appoint an experienced and competent registered professional land surveyor to conduct a survey of the boundary in question. The surveyor shall make and establish the boundary lines and corners in the manner prescribed by this chapter.

(b) In the order appointing the surveyor, the county court shall designate the boundary lines to be run and the boundary corners to be established and marked and shall conform to the law that defined the boundaries of the county.