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Koshkonong Corners

No. 668



Koshkonong Corners supports a diversity of natural communities including oak savanna, southern sedge meadow, wet-mesic prairie, and southern hardwood swamp - all contiguous with the Lake Koshkonong floodplain. Of note, is a significant population of a federally threatened and state-endangered plant species. Most of this site has been undergoing management for the benefit of this species and its habitat. Much of the initial management and restoration has focused on the removal of invasive woody species such as buckthorn and multi-flora rose.

About five acres were once farmed wetland that has now been left to return to wet-mesic prairie. Species present include bog tway blade, monkey flower, Michigan lily, turtle head, and swamp thistle. The rare plant found here has declined more than 70% from its original county records in the U.S. and protection of this site, along with the adjacent Fair Meadows State Natural Area, will aid in its recovery and ensure the habitat is managed for its long-term survival. Koshkonong Corners is privately owned and was designated a State Natural Area in 2013.

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. If a developed trail is present, it will normally be noted on the SNA map and/or under the Maps tab. A compass and topographic map or a GPS unit are useful tools for exploring larger, isolated SNAs.

The good majority of SNAs are isolated and have few or no facilities. Some SNAs have vehicle access lanes or parking lots, but their accessibility may vary depending on weather conditions. Parking lots and lanes are not plowed during winter. Hiking trails may be nonexistent or consist of undeveloped footpaths. A GPS unit or compass and a detailed topographic map are useful tools for exploring larger SNAs.

Non-DNR lands

Entrance fees: For non-DNR-owned SNAs, we are unaware of any vehicle or admission fees. However, please contact the landowner for more information.

Hunting and trapping

This is a non-DNR-owned SNA: Opportunities for hunting and trapping depend on the landowner. 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 Resources tab.

Other activities

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.


Rock County. T4N-R13E, Section 3. 62 acres.

Driving directions

This is a privately owned site with restricted access to protect an endangered species. Contact the State Natural Areas Program for more information.

Koshkonong Corners is owned by: Private