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Welcome from the Friends of the Cedarburg Bog

The Cedarburg Bog is one of the largest and most outstanding wetlands remaining in southeastern Wisconsin.

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It contains large expanses of cedar-tamarack swamp forest, in addition to marshes, shrub carrs, swamp hardwoods, and both deep and shallow bog lakes.  Its most unusual feature is the presence of a string or "patterned" bog, which consists of stunted cedars and tamaracks alternating with flatter, wetter areas dominated by sedges.  String bogs are typically found much further north, and the Cedarburg Bog may be the southernmost string bog in North America.

The Cedarburg Bog was designated a State Natural Area in 1952: it was the second property in the state added to this program. It is currently owned primarily by the DNR and the University of Wisconsin, with some private inholdings. It is registered as a National Natural Landmark by the Department of the Interior. It also has been designated a Wetland Gem by the Wisconsin Wetlands Association and an Important Bird Area by the Wisconsin Bird Conservation Initiative.

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Bog Friends' Mission Statement

The Friends of the Cedarburg Bog is a nonprofit 501(c3) organization that supports preservation, stewardship, appreciation and scientific study of the Cedarburg Bog in cooperation with the Department of Natural Resources and the University of Wisconsin-Milwaukee Field Station. The Cedarburg Bog is one of the largest and most biologically interesting wetlands in southern Wisconsin. The Bog Friends seek to make the public more aware of the Bog's uniqueness by creating opportunities to visit it. It plans projects and organizes volunteer workdays for invasive species control, to improve facilities for educational and scientific programs and to support long-term monitoring and research.





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