Simcoe County, Ontario · Water Quality Report Card
Maclean Lake
Maclean Lake in Simcoe, Ontario received a water quality grade of D (Poor). Water clarity: 1.3 m visibility.
- Clarity
- 1.3 m
- Type
- Eutrophic
Maclean Lake is a productive, nutrient-rich eutrophic lake in Simcoe County, Ontario. Water quality is graded D based on 1 sampling years through 2005. Compared to the 18 other monitored lakes in Simcoe County, Maclean Lake ranks #19 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2005-10-11. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 4.1 ft. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.25 m | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Maclean Lake
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Fishing Maclean Lake
Location
County Ranking
Ranked #19 of 19 lakes in Simcoe
Cleaner Lakes Within 30 Miles
Maclean Lake holds Grade D. 5 nearby lakes hold higher grades.
- AGloucester PoolSimcoe · 3.3 mi · Two grade letters higher (D → A)
- ABaxter LakeMuskoka District · 6.7 mi · Two grade letters higher (D → A)
- BLittle LakeSimcoe · 2.9 mi · Two grade letters higher (D → B)
- BLong LakeSimcoe · 7.7 mi · Two grade letters higher (D → B)
- BTea LakeSimcoe · 3.9 mi · Two grade letters higher (D → B)
Nearby Lakes in Simcoe
Explore Maclean Lake across LakeGrade
More Ontario Lake Rankings
Other Grade D Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Maclean 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: 2005-10-11
Monitoring stations: