The Pecatonica River
Excerpt from The Nature Conservancy
The 120-mile-long Pecatonica River, as well as its 50-mile East Branch, originate in and flow through southwestern Wisconsin, where remnants of oak savanna and tallgrass prairie provide glimpses of pre-settlement Wisconsin.
Along with the remnant grasslands, some high-quality wetlands also remain in the Pecatonica River watershed. The oxbow lakes, shallow water marshes, lowland forests and southern sedge meadows provide critical habitat for a variety of plant and animal species, some of which are on Wisconsin’s threatened and endangered species lists.