- Natural areas
- Contact information
- For information on State Natural Areas, contact:
- Thomas Meyer
Natural areas conservation biologist
Wisconsin State Natural Areas Program Grandma Lake Wetlands (No. 305)
Within Chequamegon-Nicolet National Forest, Florence County. T39N-R15E, Sections 28, 33, 34. 475 acres.
Grandma Lake Wetlands contains a 44-acre pristine soft water bog lake surrounded by an open mat that supports an unusual and diverse flora. Ringing the lake is a wide, open mat of sphagnum moss, sedges, rushes, and low ericaceous shrubs. Locally, the mat composition is quite unusual, with species such as bog club-moss, horned bladderwort, and a bulrush assuming dominance. A conifer swamp of tamarack and black spruce surround the open bog. Northern white cedar is also present. The transition zone between open bog and conifer swamp is occupied by a muskeg of widely scattered, stunted swamp conifers within a matrix of typical bog vegetation. Of particular importance is the presence of a large population of bog rush (Juncus stygius), a state endangered species that was unknown in Wisconsin until 1982. Other rare plants include bog arrow-grass (Triglochin maritimum), dragon's-mouth orchid (Arethusa bulbosa), and two sedges, livid (Carex livida) and small-headed bog sedge (C. tenuiflora). Insectivorous species are quite common including pitcher plant, narrow-leaved sundew, round-leaved sundew, and several bladderworts. A number of rare birds inhabit this area including black tern (Chilidonius niger), common loon (Gavia immer), merlin (Falco columbarius), and American bittern (Botaurus lentiginosus). Grandma Lake Wetlands is owned by the U.S. Forest Service and was designated a State Natural Area in 1996. This site is also recognized by the Forest Service as an established Research Natural Area.
From the intersection of Highway 139 and Elm Street in Long Lake, go south on Highway 139 1.9 miles, then east on Tie Mill Road (Forest Road 2402) 3.4 miles, then south on Forest Road 2158 (Grandma Lake Road) 0.5 mile to a small pull-off on the west side of the road marked by a brown breeding bird survey fencepost. A footpath leads west 0.2 mile to the bog mat. The most diverse part of the mat lies north and northeast of the lake.
Grandma Lake Wetlands is owned by:
- US Forest Service
The DNR's state natural areas program is comprised of lands owned by the state, private conservation organizations, municipalities, other governmental agencies, educational institutions and private individuals. While the majority of SNAs are open to the public, access may vary according to individual ownership policies. Public use restrictions may apply due to public safety, or to protect endangered or threatened species or unique natural features. Lands may be temporarily closed due to specific management activities. Users are encouraged to contact the landowner for more specific details.
The data shown on these maps have been obtained from various sources, and are of varying age, reliability, and resolution. The data may contain errors or omissions and should not be interpreted as a legal representation of legal ownership boundaries.
Very few State Natural Areas have public facilities, but nearly all are open for a variety of recreational activities as indicated below. Generally, there are no picnic areas, restrooms, or other developments. Parking lots or designated parking areas are noted on individual SNA pages and maps. Trails, if present, are typically undesignated footpaths. If a developed trail is present, it will normally be noted on the SNA map and/or under the "Access" tab. A compass and topographic map or a GPS unit are useful tools for exploring larger, isolated SNAs.
Hunting and trapping
This is a non-DNR owned SNA: Opportunities for hunting and trapping depend on the land owner. Please contact them directly to find out about their rules for hunting and trapping. You can find a link to other owner websites under the "Resource links" heading above. More details regarding allowable uses of this non-DNR owned SNA may be posted, if available, under the "Access" tab above.
Other allowable activities such as - but not limited to camping, geocaching and bicycling are determined by the landowner. Please contact them directly or visit their websites for details.