SDCL § 7-21-30: Constructive knowledge of county financial condition and limitations.

All officers, boards, and members of boards, and employees of every county and of all of its agencies and institutions and all other persons and corporations, shall be charged with notice of the financial condition of the county, and of all of its institutions and agencies, the limitations imposed by the budget thereof, the appropriations contained therein, the condition of each thereof, and the claims against the same.