Hidden Lake

Note: The historic bridge over the East Branch DuPage River was removed earlier this year so the bridge can be refurbished. As a result, there is no access to the Eagle Lake Trail until the bridge can be reinstalled in fall 2022. The south parking lot is also closed for the project.

Part of the trail around Round Meadow Lake will also close. The north parking lot, including the picnic shelter and restrooms, will remain open as will access to the Loop Trail and Round Meadow Lake. Most of the Round Meadow Lake Trail will remain open, but you won’t be able to complete the entire loop. The bridge on the south side of Round Meadow Lake will be completely replaced. More information about the Hidden Lake Bridge Replacements Project.

The 390-acre Hidden Lake Forest Preserve in Downers Grove is an ideal place to fish, paddle, picnic or just relax. It features two lakes and a river, trails, fishing, boating and picnic areas, including a new picnic shelter.  

Natural Scene

Trails

More than 2 miles of trails wind through Hidden Lake, making it a great destination for hikers, joggers, birders and other wildlife watchers. 

Picnicking

Hidden Lake has dozens of picnic tables and grassy areas where you can spread a blanket. Ground fires are not allowed, but you can bring grills. (The preserve has hot-coal containers for charcoal.) 

Groups can reserve the 50-person shelter as well. Details are on our Picnicking page.

Fishing

Drop a line at at the 15-acre Round Meadow Lake and the 10-acre Eagle Lake, and fish for bass, bluegill, crappie, channel catfish, green sunfish, carp and black bullhead.

Anglers 16 or older who are not legally disabled must carry valid Illinois fishing licenses. Lake maps and regulations, including creel limits and minimum lengths, are on our Fishing page.

Notice — The Forest Preserve District has found nonnative, invasive zebra mussels at Eagle Lake at Hidden Lake Forest Preserve. You can help stop their spread no matter where you fish.

• Remove all plants, animals and mud from boats, equipment and trailers.
• Drain all water from your boat and gear and dry everything thoroughly with a towel.
• Empty all bait buckets in garbage cans or dumpsters before leaving the lake. (You can't see juvenile zebra mussles with the naked eye.)
   

Boating

You can explore Round Lake in your canoe, kayak or other select nongasoline-powered watercraft but need to have a Forest Preserve District permit in your possession.

History

In presettlement times, this preserve was predominantly prairie with the southern portion in timber. The true "hidden lake" is a glacier-dug pond tucked away among mature oaks and hickories at the preserve.

In the mid-1960s, the owners of the southwest portion of the preserve east of Route 53 created Eagle Lake in the shape of a soaring eagle in memory of a lost loved one. Round Meadow Lake was created decades later in conjunction with I-355; gravel dug from the site was used for construction, and the water body mitigates frequent flooding of the area.

The Barney family settled the site in the 1830s and built a sawmill along the river, as well as a post office, one-room schoolhouse, creamery and general store. Barney sold his land to Joseph Yackley in 1854.

In 1912, the Cuttens bought more than 500 acres in the area and built a country retreat named Sunny Acres Farm. The farm was purchased in 1933 by William “Big Bill” Johnson, who made his fortune through speakeasies and gambling clubs during Prohibition. He lived on the farm until his death in 1962.

The Forest Preserve District bought the preserve in 1977 and 1978.