Sudbury District County, Ontario · Water Quality Report Card
Middle Lake
Middle Lake in Sudbury District, Ontario received a water quality grade of B (Good). Water clarity: 4.4 m visibility.
- Clarity
- 4.4 m
- Type
- Oligotrophic
Middle Lake is a cold, clear oligotrophic lake in Sudbury District County, Ontario. Water quality is graded B based on 1 sampling years through 2022. Compared to the 264 other monitored lakes in Sudbury District County, Middle Lake ranks #185 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2022-05-25. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 14.3 ft. Trophic State Index: 39.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.35 m | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 39 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
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Fishing Middle Lake
Location
County Ranking
Ranked #185 of 265 lakes in Sudbury District
Cleaner Lakes Within 30 Miles
Middle Lake holds Grade B. 3 nearby lakes hold higher grades.
Nearby Lakes in Sudbury District
Explore Middle Lake across LakeGrade
More Ontario Lake Rankings
Other Grade B Lakes in Ontario
Oligotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Middle 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: 2022-05-25
Monitoring stations: