Several types of levees are present in the Rock Island District:
- Levees that are built, operated and maintained by the federal government
- Levees that are built by the federal government and turned over for operation and maintenance by a local sponsor
- Levees that have been constructed by a non-federal entity and are enrolled in the Corps' Rehabilitation and Inspection Program, and
- Levees that were neither built by the federal government nor are part of federal operations or maintenance programs