Any county affected by such apportionment as provided in § 7-3-7, at any time within thirty days after the report of the auditor-general has been filed, may bring its action in equity in the circuit court of such county for the purpose of setting aside such apportionment and causing an apportionment to be made between the counties affected. The estimate and appraisement of the auditor-general shall be prima facie evidence of the facts and values therein stated and shall be admissible in evidence.
SDCL 7-3-9