Mille Lacs Kathio State Park near Onamia in Mille Lacs County, Minnesota — The American Midwest (Upper Plains)
Ogechie Wetlands
Kathio Landmark Trail
| | National Historic Landmark District | |
Sedge
The grass-like vegetation you see extending from the shoreline to the water's edge is known as sedge. Sedges take root in shallow water and, over many years, the slowly-decaying plants form a floating mat upon which more sedges and other plants can grow. This sedge mat supports a growth of wetland plants that are vital to the area's ecosystem.
The sedge mat acts like a massive natural sponge, soaking up water from excessive rainfalls, and slowly releasing it back into the watershed. This is beneficial, because it deters downstream flooding and allows the water to seep slowly through the underlying soil and rock, and eventually into the aquifers that are our future drinking water supply.
Wetland Plants
Swamp milkweed
Arrowhead
Cattails
Abundant Harvest
The sedges, cattails, willows and other aquatic plants provide food and nesting habitat for a wide variety of birds and other animals. From ancient times to fairly recently, the lake also supported an abundant growth of wild rice. Humans recognized the life-giving properties of these wetlands long ago, and established their living areas near this landscape of abundance.
Erected by Minnesota State Parks and Trails.
Topics. This historical marker is listed in these topic lists: Anthropology & Archaeology • Environment • Indigenous Peoples and Communities.
Location. 46° 8.763′ N, 93° 46.39′ W. Marker is near Onamia, Minnesota, in Mille Lacs County. It is in Mille Lacs Kathio State Park. It can be reached from the road to Ogechie Campground. The marker is at the beginning of the Kathio Landmark Trail. Touch for map. Marker is in this post office area: Onamia MN 56359, United States of America. Touch for directions.
Regionally, this marker is in Central Minnesota. It is also in the American Midwest and in the Corn Belt. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once Ruperts Land, the territory of the Mississippian Culture, and the Northwest Territory.
Other nearby markers. At least 8 other markers are within walking distance of this marker: A Wealth of Resources (within shouting distance of this marker); Kathio Forest: Past & Future
(about 400 feet away, measured in a direct line); Ojibwe Wild Rice Harvest (about 500 feet away); Archaeology Uncovers the Unwritten Past (about 600 feet away); Homeland of the Dakota (about 600 feet away); A Living Laboratory (about 700 feet away); Logging the Pines (about 800 feet away); Ogechie Lake (approx. 0.2 miles away). Touch for a list and map of all markers in Onamia.
Credits. This page was last revised on June 1, 2026. It was originally submitted on June 1, 2026, by McGhiever of Minneapolis, Minnesota. This page has been viewed 9 times since then. Photos: 1, 2. submitted on June 1, 2026, by McGhiever of Minneapolis, Minnesota.

