765 ILCS 120/5

All instruments creating conservation rights and all instruments releasing conservation rights shall be duly recorded in the county where the land lies so as to affect title in the manner of other conveyances of interests in land and shall describe the land subject to or released from such conservation right by adequate legal description or by reference to a recorded plat showing its boundaries. The recorder or the Registrar of Titles shall, upon recording, cause a copy of the conservation right or release of conservation right to be mailed to the Department of Natural Resources. A release of the conservation right shall not be effective until it has been duly recorded.