| Agency Name: | Department of Natural Resources |
| Type: | department |
| Jurisdiction: | Illinois |
| Chief1 Name: | Colleen Callahan |
| Chief1 Position: | Director of Natural Resources |
The Illinois Department of Natural Resources (IDNR) is the code department[1] of the Illinois state government that operates the state parks and state recreation areas, enforces the fishing and game laws of Illinois, regulates Illinois coal mines, operates the Illinois State Museum system, and oversees scientific research into the soil, water, and mineral resources of the state. In 2017, the Illinois Historic Preservation Division was added to its portfolio. It is headquartered in the state capital of Springfield.
The former Illinois Department of Conservation was reorganized into the Illinois Department of Natural Resources by executive order in 1995. The reorganization, codified into state law by Public Act 89-50, also added functions of the former Illinois Department of Energy and Natural Resources and the Illinois Department of Mines and Minerals to the agglomerated agency [2]
As of 2009, the Illinois Department of Natural Resources was divided up into 16 offices and bureaus [3]
In 2017, parts of the Illinois Historic Preservation Agency, were folded in the IDNR and became the Illinois Historic Preservation Division.
As of fiscal year 2006, the Illinois Department of Natural Resources had a budget of $187.1 million [4] Its headquarters is located at 1 Natural Resources Way, Springfield, Illinois 62702, adjacent to the Illinois State Fairgrounds.[5]
Chauncey Marsh is located in the Illinois portion of the Wabash valley. In 2022 The Nature Conservancy expanded it by purchasing a 649 acre adjacent parcel and transferring it to the IDNR.[6]