70 ILCS 605/4-35
The clerk of the circuit court of the county in which a district is organized is, ex officio, the clerk of that district. He shall maintain for each district organized in his county a "Drainage Record," in which he shall record the order organizing the district; any orders enlarging or extending the boundaries of the district; any orders pertaining to the levy of assessments, the performance of work or the duties of the commissioners; the maps, plats and plans of the district; the list of active commissioners; and all assessment rolls, certificates of levy, reports and other formal records of the district required by law or by order of court to be recorded. When such matters are recorded in the Drainage Record, no additional record thereof shall be required in the records of the circuit court. He shall not be required to keep or maintain the minutes of commissioners' meetings. He shall compile and keep a composite map of all the districts organized in the county. In addition to the duties prescribed in this Section he shall perform such other and further duties as may be required elsewhere in this Act. The clerk shall receive for his services such fees as are allowed by law for similar services by the county clerk or the clerk of the circuit court.
70 ILCS 605/4-35