[1] The land is in northern Wisconsin and entirely in Bayfield County.

The wilderness area is operated by the United States Forest Service.

[3][4] Rainbow Lake Wilderness is entirely bordered by roads that are maintained by the Forest Service.

It is heavily wooded with many species of trees including northern hardwoods, balsam fir, pine, and paper birch.

Rainbow Lake Wilderness gives opportunity for visitors to fish, hike, and camp in some of what is considered old-growth forest.