The engineer of the district shall show in the engineer's report upon the map of the district the location of the line or lines between counties, and show clearly what tracts of land within such district lie in each of the counties of the district.
Tenn. Code Ann. § 69-5-1109, under Multi-County Districts — Alternative Procedure.
Tenn. Code Ann. § 69-5-1109
The engineer of the district shall show in the engineer's report upon the map of the district the location of the line or lines between counties, and show clearly what tracts of land within such district lie in each of the counties of the district.