Sudbury District County, Ontario · Water Quality Report Card
Mattagami River Lake
Mattagami River Lake in Sudbury District, Ontario received a water quality grade of B (Good). Water clarity: 3.2 m visibility.
- Clarity
- 3.2 m
- Type
- Mesotrophic
Mattagami River Lake is a mesotrophic lake in Sudbury District County, Ontario. Water quality is graded B based on 1 sampling years through 1999. Compared to the 264 other monitored lakes in Sudbury District County, Mattagami River Lake ranks #183 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 1999-09-12. 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 10.5 ft. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.2 m | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Mattagami River Lake
Location
County Ranking
Ranked #183 of 265 lakes in Sudbury District
Cleaner Lakes Within 30 Miles
Mattagami River Lake holds Grade B. One nearby lake has a higher grade.
Nearby Lakes in Sudbury District
Explore Mattagami River 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 Mattagami River 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: 1999-09-12
Monitoring stations: