Vilas County, Wisconsin
Condition has remained stable; water is not impaired.
NotesBoulder Lake was on the 303(d) list due to mercury from 1998 to 2006. New data verfiy general fish consumption advisory only, not specific advisory.
Assessments of new chlorophyll data during the 2020 listing cycle showed good condition of Aquatic Life and Recreation uses.
Impaired Water Notes
New data verfiy general fish consumption advisory only, not specific advisory