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Today's Sunset:
7:23pm


   

Your Forest Preserves

your forest preserves

Acreage

692 acres

Activities

Cross-Country Skiing
Fishing
Hiking

Amenities

Public Parking
Trails

Related Sites 

Millennium Trail and Greenway

Fourth Lake

Named for the lake it borders, Fourth Lake Forest Preserve features a scenic peninsula with exceptional views of Fourth Lake, three ponds, and an expansive grove of pines and spruces. A thick group of mature oaks overlooks the lake and surrounding marsh. The site also features a large natural wetland and a fen.

A mowed parking area, fishing on Fourth Lake, and a half-mile mowed trail for hiking and cross-country skiing are among the amenities offered here. The trail follows the eventual route of the Millennium Trail near the eastern shore of Fourth Lake.

 

Location

Fourth Lake is located in north central Lake County between Lindenhurst and Grayslake.

An entry road and small grass lot are located on the south side of Grand Avenue (Route 132), approximately half-way between Route 45 and Sand Lake Road. [view on Google maps]

The Operations and Public Safety Facility is located on the north side of Grand Avenue, west of Route 45. [view on Google maps]

 

History

Listed on the Natural Areas Inventory, which identifies high-quality natural areas statewide, acquisitions at Fourth Lake began in 1983. Some of the land here was donated.

Originally slated as out lots for the Venetian Village subdivision, the land was considered unsuitable for building because of the site's wetland. In addition, a wide drainage ditch ran through the middle of the land.

 

The Natural Scene

Fourth Lake and its fen ecosystem are home to a variety of state-threatened and endangered plant species and could provide habitat for the American bittern and various rails.

Fens are rare, often sloping, wetlands that occur where mineral rich alkaline groundwater comes to the surface. Unlike bogs, fens have higher nutrient and mineral levels and sustain a more diverse plant and animal community. Fens are often covered by grasses, sedges, reeds and wildflowers.

Considered a swale, rather than a kettle ecosystem, the fen is situated between two ridges of the Valparaiso Moraine. The fen drains south into Fourth Lake, which drains eastward via Mill Creek to the Des Plaines River.

 

Preserve News

New location for in-person permit purchases
Land purchase provides Millennium Trail route
Forest Board approves expansion of two preserves
 

Upcoming Events

Oct 8 Playdate with Nature