Cook County Forest Preserves: Governance and Conservation

The Cook County Forest Preserves system is one of the largest county-level forest preserve systems in the United States, protecting more than 70,000 acres of open land across Cook County, Illinois. This page covers the legal structure of the Forest Preserve District of Cook County, how its governing board exercises authority, the conservation programs it administers, and the boundaries of its jurisdiction relative to other public land managers in the Chicago metro region.

Definition and scope

The Forest Preserve District of Cook County is an independent special-purpose governmental unit, legally distinct from both Cook County government and the City of Chicago. The District was established under the Illinois Forest Preserve District Act (55 ILCS 5/Art. 10), which authorizes counties in Illinois to form dedicated districts for acquiring, restoring, and maintaining natural lands. The District encompasses land spread across more than 50 municipalities within Cook County, including forest preserves accessible from Chicago's northern, western, and southern suburbs.

The enabling statute defines the District's core mission as acquiring and holding lands for the purpose of protecting and restoring the flora, fauna, and scenic features of such lands for the recreation and education of the public. This dual mandate — conservation alongside public recreation — distinguishes the Forest Preserve District from purely passive wilderness agencies and from fully recreational park bodies such as the Chicago Park District.

The District's land holdings include 69 named forest preserves, more than 180 miles of trails, 30 boat launches, and 22 nature centers as reported by the Forest Preserve District of Cook County. The system stretches from the Des Plaines River corridor in the west to the Calumet region in the southeast.

Scope, coverage, and limitations: The District's authority applies only within Cook County boundaries. It does not govern state land managed by the Illinois Department of Natural Resources, federally administered land such as the Indiana Dunes National Park, or preserves located in adjacent counties including DuPage, Lake, Will, Kane, or McHenry. Residents and policymakers dealing with conservation land in those counties must consult their respective county forest preserve or open space agencies. The page on collar counties in the Chicago metro addresses those adjacent jurisdictions.

How it works

The Forest Preserve District of Cook County is governed by a Board of Commissioners composed of the same elected members who sit on the Cook County Board of Commissioners. Under Illinois law, the county board president serves as president of the Forest Preserve District's board, and the 17 county commissioners serve as its commissioners. This structural overlap means the District does not hold separate elections; its leadership is determined through the same Cook County electoral cycle that governs the broader county government.

The District operates through the following functional structure:

1. Board of Commissioners — Adopts the annual budget, approves land acquisitions, sets policy, and authorizes major contracts.
2. General Superintendent — Appointed by the board; oversees day-to-day operations, staffing (approximately 700 full-time employees), and capital projects.
3. Conservation and Natural Resources Division — Leads ecological restoration, invasive species management, and habitat monitoring across the 70,000-acre system.
4. Planning and Development Division — Manages trail construction, facility upgrades, and long-range land use planning.
5. Finance and Administration — Oversees the District's property tax levy, grant administration, and capital budgeting.

Funding flows primarily from a dedicated property tax levy authorized under 55 ILCS 5/10. The District may also accept grants, donations, and intergovernmental transfers. Conservation programs receive supplemental support through the federal Land and Water Conservation Fund, administered nationally by the National Park Service (NPS LWCF Program).

Common scenarios

Understanding how the District's governance plays out in practice requires examining the recurring situations that arise for residents, municipalities, and neighboring agencies.

Restoration projects adjacent to private land: When the District undertakes prescribed burns or invasive species removal near suburban neighborhoods, it typically notifies adjacent municipalities and property owners under protocols established in its master plan. The Northeastern Illinois Planning Commission — now restructured as the Chicago Metropolitan Agency for Planning — coordinates regional land use frameworks that affect buffer zones between forest preserves and developed parcels.

Trail connectivity agreements: The District enters intergovernmental agreements with municipal park districts, the Illinois Department of Natural Resources, and the Metropolitan Water Reclamation District to create continuous trail corridors. The North Branch Trail and the Salt Creek Trail, for example, cross jurisdictions requiring written easements and maintenance-sharing agreements documented under Chicago-area intergovernmental agreements.

Land acquisition disputes: When the District seeks to acquire private parcels, it may exercise eminent domain authority granted under 55 ILCS 5/10-12. Disputes over valuation proceed through the Cook County Circuit Court, which holds jurisdiction over condemnation proceedings within the county.

Permit and concession conflicts: Private vendors operating within forest preserve boundaries — including food concessionaires and equipment rental operators — require permits issued by the District. These are not subject to Chicago municipal licensing rules administered by the Chicago Department of Business and Consumer Protection.

Decision boundaries

The District's authority has defined edges that frequently matter in practice.

District versus Illinois DNR: The Illinois Department of Natural Resources manages state parks and state natural areas that may abut or overlap in geography with county forest preserves. Jurisdiction over fish and wildlife within District preserves remains partially shared: the Illinois DNR issues fishing licenses that apply to District waterways, but the District sets its own rules for trail use, event permitting, and facility construction.

District versus Chicago Park District: The two entities serve overlapping constituencies but hold distinct mandates. The Chicago Park District (Chicago Park District governance) administers approximately 8,800 acres of urban parkland, nearly all within Chicago city limits, with an emphasis on athletic facilities and programmed recreation. The Forest Preserve District prioritizes ecological integrity and natural habitat, prohibiting golf courses and most permanent built structures on its land. This contrast in purpose means that land near Chicago's city boundary may fall under either authority depending on parcel ownership — not geography alone.

District versus municipal zoning: Municipalities within Cook County cannot rezone land owned by the District. The District's property is exempt from local zoning ordinances under Illinois law, meaning a suburb cannot require the District to comply with local height limits, setback rules, or use restrictions when constructing a nature center or maintenance facility.

Budget and levy limits: The District's property tax levy is subject to statutory rate caps under Illinois law. For voters seeking to understand how Forest Preserve levies appear alongside other Cook County charges, the Cook County property tax system page provides the broader framework. The Chicago Metro Authority index offers a navigational reference across the full range of Cook County and regional governmental bodies covered in this network.

References

• Forest Preserve District of Cook County — Official site for land holdings, programs, and governance documents.
• Illinois General Assembly — Forest Preserve District Act, 55 ILCS 5/Art. 10 — Enabling statute governing formation, powers, and funding authority.
• Cook County Board of Commissioners — Governing body that serves concurrently as the District's board.
• National Park Service — Land and Water Conservation Fund — Federal grant program supplementing District conservation funding.
• Chicago Metropolitan Agency for Planning (CMAP) — Regional planning authority coordinating open space and land use frameworks affecting forest preserve buffer areas.
• Illinois Department of Natural Resources — State agency with shared jurisdiction over fish, wildlife, and adjacent state natural areas.