Sudbury District County, Ontario · Water Quality Report Card
Dumbell Lake
Dumbell Lake in Sudbury District, Ontario received a water quality grade of B (Good). Water clarity: 2.8 m visibility. Phosphorus: 11.8 µg/L.
- Clarity
- 2.8 m
- Type
- Mesotrophic
Dumbell Lake is a mesotrophic lake in Sudbury District County, Ontario. Water quality is graded B based on 2 sampling years through 2025. Compared to the 264 other monitored lakes in Sudbury District County, Dumbell Lake ranks #201 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2025-08-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 9.2 ft. Phosphorus level: 11.8 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.8 m | C |
| Phosphorus | 11.8 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Dumbell Lake
Location
County Ranking
Ranked #201 of 265 lakes in Sudbury District
Cleaner Lakes Within 30 Miles
Dumbell Lake holds Grade B. 2 nearby lakes hold higher grades.
- ALloyd LakeTimiskaming District · 4.2 mi · Higher grade (B → A)
- AMidlothian LakeTimiskaming District · 4.8 mi · Higher grade (B → A)
Nearby Lakes in Sudbury District
Explore Dumbell Lake across LakeGrade
More Ontario Lake Rankings
Other Grade B Lakes in Ontario
Mesotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Dumbell 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: 2025-08-01
Monitoring stations: