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FISH CONSUMPTION ADVISORY for Franklin Creek and Mill Pond.  To learn more, click here.

NOTE:  Franklin Creek State Natural Area will be closed on the following dates for firearm deer hunting: November 18, 19, 20; December 1, 2, 3, 4, 29, 30, 31, 2022; January 1, 13, 14, 15, 2023. During the firearm deer hunting seasons all trails, day use areas, shelters and campgrounds are closed.

Franklin Creek State Natural Area is located in Lee County, northwest of the village of Franklin Grove and east of Dixon just north of IL Rt. 38. Beautiful Franklin Creek flows throughout the 882-acre park. Several large natural springs, hardwood forests, bedrock outcroppings and a large variety of flora and fauna comprise a pristine ecosystem.

The mill spring, the largest in the park, provided water power for the largest grist mill in Lee County, constructed in 1847. The site includes a 198-acre nature preserve which is an outstanding and diverse natural area in a uniquely beautiful setting.

Low-lying areas along the creek bed support a bottomland forest dominated by silver maple and hackberry. Ravines support mesic upland forest characterized by sugar maple and basswood and paw paw. On drier sites, a dry-mesic forest of white oak, red oak, black oak, shagbark hickory and hop hornbeam occurs. A small glacial drift hill prairie remnant is present in the preserve.

The forested areas provide habitat for woodpeckers, flycatchers, thrushes, vireos and warblers; and, raccoons, chipmunks, gray and fox squirrels, beaver, and deer. Nineteen species of fish have been recorded from Franklin Creek.

Franklin Creek SNA picnic shelters can be reserved through ExploreMoreIL™.

Hiking and seasonal cross country skiing and snowmobile trails, along with equestrian trails, are popular destinations for site visitors. The equestrian area contains 12 miles of trails developed and maintained by the Rock River Trail and Horseman'​s Association. Equestrian facilities include a picnic shelter, restrooms, drinking water and an outdoor show area.

Since 1987, the Franklin Creek Preservation Area Committee has been continuing their volunteer involvement by working to reconstruct the Franklin Creek Grist Mill. The original early-American corn meal and wheat flour producing mill was reconstructed and became operational in 1999. It is open to the public on weekend afternoons from April through October, and the mill building serves as a visitor center.​​​​​​


Franklin Creek State Natural Area is located between Rochelle and Dixon, just north of IL RTE 38. On IL RTE 38 on the west side of the small town of Franklin Grove, turn north on Daysville Road and go one block to Old Mill Road. Turn left (west) on Old Mill Road and proceed one mile to the State Natural Area.

From northerly parts, Franklin Creek State Natural Area is located 10 miles south of Oregon. On IL RTE 64 in Oregon, ½ mile east of the bridge over Rock River is the IL RTE 64/Daysville Road intersection (at the Traffic Light). At this intersection go south on Daysville Road 10 miles to the small town of Franklin Grove. At the northern edge of town, turn right (west) on to Old Mill Road and go one mile to the State Natural Area.

While groups of 25 or more are welcome and encouraged to use the park's facilities, they are required to register in advance with the site office to avoid crowding or scheduling conflicts.

Additional Information

  • At least one responsible adult must accompany each group of 15 minors.
  • Pets must be kept on leashes at all times.
  • Actions by nature can result in closed roads and other facilities. Please call ahead to the park office before you make your trip.
  • We hope you enjoy your stay. Remember: take only memories, leave only footprints.



















Park Information:

Northwestern Illinois

1872 Twist Road

Franklin Grove





Franklin Creek site map

Other Parks in Illinois:

Map of Illinois DNR Regions State Parks in Northwestern IllinoisState Parks in Northeastern IllinoisState Parks in East Central IllinoisState Parks in West Central IllinoisState Parks in Southern Illinois