Thunder Bay District County, Ontario · Water Quality Report Card
Swallow Lake
Swallow Lake in Thunder Bay District, Ontario received a water quality grade of B (Good). Phosphorus: 23.4 µg/L.
- Type
- Mesotrophic
Swallow Lake is a mesotrophic lake in Thunder Bay District County, Ontario. Water quality is graded B based on 1 sampling years through 2023. Compared to the 301 other monitored lakes in Thunder Bay District County, Swallow Lake ranks #136 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2023-05-25. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
No clarity data. Phosphorus level: 23.4 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 23.4 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Swallow Lake
Location
County Ranking
Ranked #136 of 302 lakes in Thunder Bay District
Cleaner Lakes Within 30 Miles
Swallow Lake holds Grade B. One nearby lake has a higher grade.
Nearby Lakes in Thunder Bay District
Explore Swallow 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 Swallow 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: 2023-05-25
Monitoring stations: