Lake Charlemagne is a productive, nutrient-rich eutrophic lake in Cook County, Illinois. Water quality is graded F based on 1 sampling years through 2022. Compared to the 67 other monitored lakes in Cook County, Lake Charlemagne ranks #43 for water quality.
Source: EPA Water Quality Portal sampling records, Illinois DNR, last sampled 2022-11-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 2 ft of visibility. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Charlemagne
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Fishing Lake Charlemagne
Location
County Ranking
Ranked #43 of 68 lakes in Cook County
Cleaner Lakes Within 30 Miles
Lake Charlemagne holds Grade F. One nearby lake has a higher grade.
Nearby Lakes in Cook County
Explore Lake Charlemagne across LakeGrade
More Illinois Lake Rankings
Other Grade F Lakes in Illinois
Eutrophic Lakes in Illinois
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-11-01
Monitoring stations: 1