Thunder Bay District County, Ontario · Water Quality Report Card
Bertaud Lake
Bertaud Lake in Thunder Bay District, Ontario received a water quality grade of D (Poor). Water clarity: 1.9 m visibility.
- Clarity
- 1.9 m
- Type
- Eutrophic
Bertaud Lake is a productive, nutrient-rich eutrophic lake in Thunder Bay District County, Ontario. Water quality is graded D based on 1 sampling years through 2019. Compared to the 301 other monitored lakes in Thunder Bay District County, Bertaud Lake ranks #295 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2019-05-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 6.2 ft. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.9 m | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Bertaud Lake
Location
County Ranking
Ranked #295 of 302 lakes in Thunder Bay District
Cleaner Lakes Within 30 Miles
Bertaud Lake holds Grade D. 4 nearby lakes hold higher grades.
- AMinchin LakeThunder Bay District · 11.2 mi · Two grade letters higher (D → A)
- ADe Lesseps LakeThunder Bay District · 12.9 mi · Two grade letters higher (D → A)
- BHamilton LakeThunder Bay District · 10.6 mi · Two grade letters higher (D → B)
- BMccrea LakeThunder Bay District · 16.4 mi · Two grade letters higher (D → B)
Nearby Lakes in Thunder Bay District
Explore Bertaud Lake across LakeGrade
More Ontario Lake Rankings
Other Grade D Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Bertaud 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: 2019-05-27
Monitoring stations: