Eastern Ontario County, Ontario · Water Quality Report Card
Mackay Lake
Mackay Lake in Eastern Ontario, Ontario received a water quality grade of C (Fair). Water clarity: 3 m visibility.
- Clarity
- 3 m
- Type
- Mesotrophic
Mackay Lake is a mesotrophic lake in Eastern Ontario County, Ontario. Water quality is graded C based on 1 sampling years through 2000. Compared to the 4 other monitored lakes in Eastern Ontario County, Mackay Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2000-08-23. 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 9.8 ft. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 m | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Mackay Lake
Location
County Ranking
Ranked #3 of 5 lakes in Eastern Ontario
Cleaner Lakes Within 30 Miles
Mackay Lake holds Grade C. 2 nearby lakes hold higher grades.
Nearby Lakes in Eastern Ontario
Explore Mackay Lake across LakeGrade
More Ontario Lake Rankings
Other Grade C Lakes in Ontario
Mesotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Mackay Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2000-08-23
Monitoring stations: