Muskoka District County, Ontario · Water Quality Report Card
Stoneleigh Lake
Stoneleigh Lake in Muskoka District, Ontario received a water quality grade of B (Good). Water clarity: 1.2 m visibility. Phosphorus: 15.5 µg/L.
- Clarity
- 1.2 m
- Type
- Eutrophic
Stoneleigh Lake is a productive, nutrient-rich eutrophic lake in Muskoka District County, Ontario. Water quality is graded B based on 2 sampling years through 2002. Compared to the 169 other monitored lakes in Muskoka District County, Stoneleigh Lake ranks #153 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2002-05-03. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 3.9 ft. Phosphorus level: 15.5 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.2 m | D |
| Phosphorus | 15.5 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Stoneleigh Lake
Location
County Ranking
Ranked #153 of 170 lakes in Muskoka District
Cleaner Lakes Within 30 Miles
Stoneleigh Lake holds Grade B. 3 nearby lakes hold higher grades.
- ABonnie LakeMuskoka District · 2.9 mi · Higher grade (B → A)
- AEnnis LakeMuskoka District · 1 mi · Higher grade (B → A)
- AFrau LakeMuskoka District · 4 mi · Higher grade (B → A)
Nearby Lakes in Muskoka District
Explore Stoneleigh Lake across LakeGrade
More Ontario Lake Rankings
Other Grade B Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Stoneleigh 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: 2002-05-03
Monitoring stations: