Sudbury District County, Ontario · Water Quality Report Card
Upper Sturgeon Lake
Upper Sturgeon Lake in Sudbury District, Ontario received a water quality grade of C (Fair). Water clarity: 0.5 m visibility. Phosphorus: 17 µg/L.
- Clarity
- 0.5 m
- Type
- Eutrophic
Upper Sturgeon Lake is a productive, nutrient-rich eutrophic lake in Sudbury District County, Ontario. Water quality is graded C based on 2 sampling years through 2011. Compared to the 264 other monitored lakes in Sudbury District County, Upper Sturgeon Lake ranks #260 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2011-05-13. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 1.6 ft of visibility. Phosphorus level: 17 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.5 m | F |
| Phosphorus | 17 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Upper Sturgeon Lake
Location
County Ranking
Ranked #260 of 265 lakes in Sudbury District
Cleaner Lakes Within 30 Miles
Upper Sturgeon Lake holds Grade C. 5 nearby lakes hold higher grades.
- ATrout LakeSudbury District · 4.6 mi · Two grade letters higher (C → A)
- AEdith LakeSudbury District · 7.1 mi · Two grade letters higher (C → A)
- BFrench River LakeSudbury District · 5.5 mi · Higher grade (C → B)
- BKakakiwaganda LakeSudbury District · 9.4 mi · Higher grade (C → B)
- BLower French R Delta LakeSudbury District · 14 mi · Higher grade (C → B)
Nearby Lakes in Sudbury District
Explore Upper Sturgeon Lake across LakeGrade
More Ontario Lake Rankings
Other Grade C Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Upper Sturgeon 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: 2011-05-13
Monitoring stations: