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Grassy Lake Trail Map
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689 acres


Cross-Country Skiing


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Grassy Lake

The landscape of this preserve features gently rolling hills, oak woodlands, marshes and moraines.

Winding through colorful sedge meadows and mature oak woodlands, 3.5 miles of trails offer scenic views of Grassy Lake and the Fox River valley. Trails here are open only for hiking and cross-country skiing. Bicycling is not allowed.



Grassy Lake is located in southwest Lake County in Lake Barrington. [View on Google Maps]

Park at the Lake Barrington Village Hall, located on Old Barrington Road off of Kelsey Road and southwest of Miller Road.


The Natural Scene

Three rare and valuable natural features of the preserve include Wagner Fen, Flint Creek and wooded bluffs. Oak woodlands surround the fen and creek, providing habitat for songbirds, woodpeckers and hawks. 

Wagner Fen: In 2001, the 55-acre Wagner Fen portion of Grassy Lake owned by the Lake County Forest Preserves was dedicated as an Illinois Nature Preserve, in conjunction with the 45 acres previously dedicated by Barrington-based Citizens for Conservation (CFC). Combined, the Wagner Fen nature preserve complex totals 100 acres. The fen is co-owned by CFC and the Village of Tower Lakes.

An ecologically-valuable wetland, the fen is home to eight endangered and threatened species. CFC and Forest Preserve natural resource crews worked together to successfully preserve and restore Wagner Fen. A biological control project designed to eliminate the non-native purple loosestrife from the fen has resulted in almost complete eradication of the evasive plant species from the site.

Flint Creek: One of the healthier streams in Lake County and in the state of Illinois, Flint Creek's quality rating of a Grade B is considered rare for Illinois. With help from an Illinois Environmental Protection Agency grant, stream banks along the Flint Creek corridor were restored.


Contact Information

Grassy Lake
23900 W Kelsey Road
Lake Barrington, IL 60010
Trail at Grassy Lake. Image (c) Justin

Preserve News

Preserve safety tips
Board approves 100-year Vision and Strategic Plan
Board approves 100-year vision

Ongoing Events

Sep 1 - Oct 31
Grassy Lake Restoration Workdays

Preserve Improvements

Grassy Lake