Big South Falls is a stretch of rapids on South Branch Pike River in Marinette County, Wisconsin, in the Northern Lakes and Forests region. It lies about 19 miles south of Niagara and roughly 67.6 miles north of Green Bay as the crow flies.
The Northern Lakes and Forests are a glaciated landscape of pine, spruce, aspen and northern hardwoods dotted with thousands of lakes and wetlands. Rivers step down over ancient bedrock ledges, with dark, tannin-stained water pouring over rock.
There are 12 recorded rapids in Marinette County. Chipmunk Falls, is about 2.9 miles away. Bull Falls, is about 8.1 miles away. Carney Rapids, is about 10.9 miles away.
Big South Falls is located at 45.4972° N, 88.0320° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The position was verified on aerial imagery. Details on trails, parking and access have not been documented for this rapid yet.