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Wisconsin State Natural Areas Program Peshtigo River Delta Marshes (No. 563)



Within Green Bay West Shores Wildlife Area, Marinette County. T29N-R23E, Sections 15, 16, 21. 481 acres.



Peshtigo River Delta Marshes is an extensive sedge meadow and marsh complex bordering the mouth of the Peshtigo River along the west shore of Green Bay. This area supports a willow and dogwood shrub carr that becomes more open toward its southern end where the quality sedge meadow is found. Tussock sedge and bluejoint grass dominate the meadow with cordgrass, marsh fern, sensitive fern, northern tick-seed sunflower, spotted Joe-pye weed, orange jewelweed, turtlehead, marsh cinquefoil, blue skullcap, and marsh bellflower. Slender willow dominates the shrub layer which also contains alder, red-osier dogwood, and white meadowsweet. Osprey and American bittern are known from the surrounding area. Peshtigo River Delta Marshes is owned by the DNR and was designated a State Natural Area in 2008.


Driving directions

From the intersection of US 141 and County Y just west of Peshtigo, go south on Y 3.2 miles, then east on Hale School Road 1 mile, then south on Hale Road 1.7 miles, then east to the end of Spitzmacher Road about 2.4 miles. Park along the road and walk east into the site.


Peshtigo River Delta Marshes is owned by:

  • WDNR


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.

Allowable activities

In general, the activities listed below are allowed on all DNR-owned SNA lands. Exceptions to this list of public uses, such as SNAs closed to hunting, are noted under the "Access" tab above and posted with signs on site.

  • Hiking
  • Fishing
  • Cross country skiing
  • Hunting
  • Trapping

Prohibited activities

  • Camping and campfires
  • Collecting of animals (other than legally harvested species), non-edible fungi, rocks, minerals, fossils, archaeological artifacts, soil, downed wood, or any other natural material, alive or dead. Collecting for scientific research requires a permit issued by the DNR
  • Collecting of plants including seeds, roots or other non-edible parts of herbaceous plants such as wildflowers or grasses
  • Geocaching
  • Horseback riding
  • Rock climbing
  • Vehicles, including bicycles, ATVs, aircraft, and snowmobiles except on trails and roadways designated for their use

For rules governing state-owned SNAs and other state lands, please consult Chapter NR 45 Wis. Admin. Code [exit DNR]

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Last revised: Monday, June 10, 2019