Forge Quarry Lake is a mesotrophic lake in Cook County, Illinois. Water quality is graded C based on 1 sampling years through 2022. Compared to the 67 other monitored lakes in Cook County, Forge Quarry Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Illinois DNR, last sampled 2022-09-07. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 8.5 ft. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.5 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Forge Quarry Lake
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Fishing Forge Quarry Lake
Location
County Ranking
Ranked #11 of 68 lakes in Cook County
Nearby Lakes in Cook County
Explore Forge Quarry Lake across LakeGrade
More Illinois Lake Rankings
Other Grade C Lakes in Illinois
Mesotrophic 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: 2022-09-07
Monitoring stations: 1