Johnson Sauk Trail State Park - Illinois

US National Parks and Monuments Travel Guide:

Park Overview

From cross-country skiing in the winter to a lazy picnic in the summer, from a fishing trip in the spring to exploring fields of wildflowers amidst the fall colors of the giant oaks, Johnson-Sauk Trail State Park truly is a park for all seasons.

Located on a glacial moraine that forms the beautiful, rolling hills of Henry County in north-central Illinois, the park sits astride a trail that led Native Americans from Lake Michigan to the confluence of the Mississippi and Rock rivers.

Located off Illinois Route 78, Johnson-Sauk Trail is 6 miles south of Interstate 80 and 5 miles north of Kewanee. Originally known as the Henry County Conservation Area, a local newspaper invited the public to suggest names when the conservation area was going to be changed to a state park. Two names were popular with the public. One would name the park after State Senator Frank P. Johnson, a tireless worker on behalf of the park, while the second suggested Sauk Trail as a fitting name, for the Indian tribes most associated with the park when Europeans began settling the area.

The two most popular choices were combined to form the park's official name. Today, Johnson-Sauk Trail State Park features 1,365 acres of recreation opportunities.


Johnson-Sauk Trail State Park is located in a part of Illinois that was a vast shallow sea millions of years ago. Two glaciers covered this part of Illinois, the last being the Wisconsinian Glacier, which shaped the land as we know it today.

Thestate park is located on the southern edge of what once was the Great Willow Swamp, a marsh area covering the low-lying areas between the Mississippi, Rock and Green rivers, and is believed to have contained one of the most concentrated and varied wildlife populations in the central part of North America.

Attracting large numbers of both market and sport hunters, the area was considered a sportsman's paradise. The marsh eventually was drained for agricultural purposes.

The abundance of wild game and fur-bearing animals was what attracted Indians -- the area's first inhabitants -- to this part of Illinois. Although mound-building tribes were the first Native Americans to settle this part of the state, tribes of Sauk, Fox, Winnebago, Kickapoo, Potawatomi, Kaskaskia, Peoria and Piankashaw Indians later established villages here.

Winnebago Indians are known to have used the Sauk Trail and to have camped at or near the state park regularly. The Sauk tribe moved from Wisconsin to the confluence of the Rock and Mississippi rivers and joined the Fox Indians to form a confederation. These tribes sent hunting parties to this part of the marsh frequently.

French trappers and traders were the first Europeans to pass through this area. The land encompassing Johnson-Sauk Trail State Park was part of the Great Northwest Territory claimed by France. Following the French and Indian War, the land was ceded to Great Britain in 1765, becoming part of the colony of Virginia. The land later was part of the Northwest Territory and Illinois Territory before Illinois gained statehood.

Natural Features

Johnson-Sauk Trail State Park features a varied terrain, with rolling hills covered with a mix of hardwoods and pines in the south half of the park, and a flatter landscape with wildlife plantings and grasslands making up the northern half of the park.

Thepark's centerpiece is a 58-acre lake that offers both fishing and boating, as well as nearly two and a half miles of shoreline to explore.

The lake was one of a series of lakes considered for Illinois in 1944. After studying a number of sites, 369 acres of land known as Whiting's Woods were purchased. Actual construction of the lake didn't begin until 1949, and was halted soon after when engineers encountered unfavorable soil conditions. Work didn't get underway again until the summer of 1955, after advanced methods of dam construction were developed.

The park also has Sauk Trail Pond, a scenic 3-acre pond near the park's round barn, that provides fishing opportunities in a more restful setting.

From spring through fall, visitors will find a wide array of both woodland and prairie wildflowers, including bluebells, Dutchman's breeches, trillium, prairie anemone, yarrow, field daisies, vervain and goldenrod. While fewer than 1,000 natural areas exist in Illinois, one of them is located in Johnson-Sauk Trail State Park. The area contains a population of skunk cabbage, an early bloomer that sometimes blossoms in the snow -- rare for this part of the state.

White-tailed deer, raccoons, squirrel, opossum and rabbits are among the myriad wildlife found in the park, while birders have ample opportunities to catch sight of chickadees, nuthatches, goldfinches and hundreds of other avian visitors.


The park features 5 picnic areas with tables and cook stoves/grills. Chief Senachwine Shelter offers electricity and can be reserved at


The Chief Keokuk Campground features 70 pads with electrical hook-ups for campers or tents (Class A camping), plus 25 non-electrical, 'tent only' sites (Class C camping) that are not accessible by vehicle. There is a shower building and a sanitary dump station in the camping area. These two facilities and all water open May 1st and close November 1st. The park does not provide water November 1st - May 1st, however the campground is open during these winter months for electric or non-electric 'dry' camping.

In addition, "Blackhawk Group Area" on Lakeshore Loop Road is available for organized youth/adult group camping May 1st - November 1st. Lakeshore Loop Road is closed.

Reservations can be made, for dates between May 1st and November 1st, at for many of the Class A and Blackhawk Group Area.

A primitive cabin, Chief Tecumseh, is also available. The cabin is located on a slope overlooking Johnson Lake. This cabin is obtained through reservations only, by using There is no cooking, pets or smoking in the cabin. Fire grill, table and BBQ grill are provided outside. A full size bed, two sets of bunk beds, table and benches are provided inside. The cabin has heat and a/c available with two ceiling fans. You must provide your own bedding. Cabin is available April - November. During the months of April & November, there is no water and no showers available at the park. May - Oct, there is potable water within 100 yards of the cabin and the shower building is open.


The playground in Chief Keokuk Campground is available to our campers.


The 58-acre lake has a maximum depth of 21 feet and features excellent populations of largemouth bass, crappie, bluegill, channel catfish and bullhead. Numerous fish cribs and attractors have been put into the lake to enhance fishing. In addition, muskie and northern pike have been added to the lake in recent years, providing visitors with an exciting, new fishing opportunity. Fishing is permitted by boat (electric trolling motor only) and along the shoreline. Fishing hours are within the above park hours. Night fishing is not allowed. Park is open to campers only after park hours.


Johnson-Sauk Trail Lake's boat launch is adjacent to the Marina near the dam. Only electric trolling motors are permitted on the lake.


Johnson-Sauk Trail has 4 miles of trails, ranging from 1/4 mile to 1 mile in length, from easy to moderate and taking hikers along the lake or through land ranging from rolling prairie to pine plantations and bottomland hardwood forests. Even the pickiest of hikers should find a trail to his or her liking. If added miles are desired, the trails have been designed to connect so you can link one to another, providing up to an 8 mile loop around Lake Johnson

Winter Sports

Johnson-Sauk Trail is an all-season park, with summer hiking trails doubling as trails for 3 miles of cross-country ski trails. Trail maps are available.

The park's hills also are ideal for sledding and the lake provides an excellent place to go ice fishing or ice skating.

Ryan's Round Barn

One of the most unique features of Johnson-Sauk Trail State Park is the large, round barn built in 1910 and located near the park entrance. One of the largest round barns in the country, the architectural marvel stands more than 80 feet high and is 85 feet in diameter.The barn has a full-size16-foot wide silo inside. Round barns originally were built by religious groups because they "left no corners in which the devil could hide."

Local Attractions

Bishop Hill Historical Site

Located 20 miles SW of Johnson-Sauk State Recreation Area, this National Landmark Village is the perfect place to spend an afternoon or the day. There are museums, eateries, unique gift shops and art galleries as well as a variety of festivals.

Francis Park

Located 5 miles SE of Johnson-Sauk State Recreation Area, the unique home of Frederick Francis was built in 1890 out of brick, stone and native wood. The house features disappearing doors and windows, an air cooling system, radiant heat deflectors in the fireplace chimney, and running water, all without the benefit of electricity.


Johnson Sauk Trail State Park is located in west central Henry County. The park entrance is located on the eastern side of IL Rt. 78 just five miles north of Kewanee or six miles south of I-80 (Exit 33) and Annawan. The entrance is well marked and easy to find.


28616 Sauk Trail Rd., Kewanee, IL 61443 -- 309.853.5589

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