SB2311 would amend the Flood Control Act of 1945 to require the Illinois Department of Natural Resources (DNR) to create and periodically update a comprehensive statewide flood plan beginning no later than July 1, 2026, and then every five years thereafter. The plan would be built from regional flood plans tied to river basins and would be intended to guide state and local flood control policy, protect life and property, and, where possible, support water development.
The bill also requires DNR to establish flood planning regions, provide technical and financial assistance to regional planning groups, and adopt guidance principles for both statewide and regional planning. Regional plans must use scientific data and updated mapping, identify flood-prone areas and solutions, account for land use and population growth, and be reviewed for impacts on neighboring areas before approval. The bill further requires a 10-year dam repair, rehabilitation, and maintenance plan, annual progress reports to the General Assembly, and the creation of a State Flood Plan Implementation Advisory Committee to oversee implementation and review related rules.
If enacted, SB2311 would add new Sections 5.1 through 5.4 to the Flood Control Act of 1945 and create a new statewide flood-planning framework administered by DNR. It would impose recurring planning, reporting, and coordination duties on DNR, require collaboration with the Department of Agriculture and the Illinois Emergency Management Agency and Office of Homeland Security, and establish formal regional planning groups with public participation requirements. The bill would also affect flood control dams, flood mitigation projects, land-use analysis in floodplains, and the process for prioritizing and approving flood-related projects across the state.
No committee transcripts or recorded votes were provided, so there is no direct evidence of debate, amendments, or formal support/opposition in the available record. Based on the bill text alone, the measure appears policy-driven and administrative in nature, with an emphasis on long-term flood preparedness, coordination, and infrastructure planning. The overall tone of the proposal is proactive and technical rather than controversial on its face.
The main potential points of contention are likely to involve the scope of state oversight, the costs and administrative burden of creating and maintaining statewide and regional flood plans, and the requirement that DNR provide technical and financial assistance to regional groups. Stakeholders such as counties, municipalities, utilities, agricultural interests, environmental groups, and flood-prone communities may differ on project priorities, land-use implications, and whether flood control solutions should also be used to support water supply development. Another possible issue is the bill’s requirement that regional plans not negatively affect neighboring areas, which could complicate approval of projects with downstream or cross-jurisdictional impacts.