Assessing the Great Lakes

Lake Assessments

Lake Superior

Lake Michigan

Lake Huron

Lake Erie

Lake Ontario

Good & Unchanging

Fair & Unchanging

Fair to Good & Unchanging

Poor & No Trend

Fair & Unchanging

Status

Green indicator (good status). Most or all ecosystem components are in acceptable condition.
Good
Yellow indicator (fair status). Some ecosystem components are in acceptable condition.
Fair
Red indicator (poor status). Very few or no ecosystem components are in acceptable condition.
Poor
Grey indicator (status indeterminate). Data are not available or are insufficient to assess condition of the ecosystem components.
Undetermined