70 ILCS 2905/2-2
To lay out, locate, establish and construct one or more levees or embankments of such size, material and character as may be required to protect the district against overflow from any river, or tributary stream, or water-course, and to lay out, establish and construct all such other or additional improvements or works as may be auxiliary or incidental thereto, or promotive of the sanitary purposes contemplated in this Act; and to maintain, repair, change, enlarge and add to such levees, embankments, improvements and work as may be necessary or proper to meet future requirements for the accomplishment of the purposes aforesaid.
To the extent that any part of the territory of the District overlaps with a flood prevention district that is formed under the Flood Prevention District Act, the flood prevention district shall have the exclusive authority to repair, construct, or reconstruct levees within the territory of the flood prevention district. The District shall operate under the direction of the board of commissioners of the flood prevention district with respect to the repair, construction, or reconstruction of levees within the territory of the flood prevention district. In addition, the board of the District must comply with any requests for information by the board of commissioners of the flood prevention district, including, but not limited to, requests for information concerning past, present, and future contracts; employees of the District; finances of the District; and other activities of the District. This information must be submitted to the board of commissioners of the flood prevention district within 30 days after the request is received.
70 ILCS 2905/2-2