School Section Lake, Waupaca County - Critical Habitat Designation (PROPOSED)
| 1960 |
Silver Lake, Waukesha County-Critical Habitat Designation (PROPOSED)
| 2006 |
Spider Lake, Iron County - Critical Habitat Designation (PROPOSED)
| 2011 |
Spring Lake, Portage County - Critical Habitat Designation (PROPOSED)
| 1960 |
Springville Pond, Portage County - Critical Habitat Designation (PROPOSED)
| 1960 |
Staples Lake, Barron County - Critical Habitat Designation (PROPOSED)
| 2006 |
Sturgeon Bay, Door County - Critical Habitat Designation (PROPOSED)
| 1960 |
Sunset Lake, Portage County - Critical Habitat Designation (PROPOSED)
| 1960 |