Rainy River District County, Ontario · Water Quality Report Card
Manion Lake
Manion Lake in Rainy River District, Ontario received a water quality grade of B (Good). Water clarity: 2 m visibility. Phosphorus: 10.1 µg/L.
- Clarity
- 2 m
- Type
- Mesotrophic
Manion Lake is a mesotrophic lake in Rainy River District County, Ontario. Water quality is graded B based on 2 sampling years through 2023. Compared to the 79 other monitored lakes in Rainy River District County, Manion Lake ranks #71 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2023-05-21. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 6.6 ft. Phosphorus level: 10.1 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 m | D |
| Phosphorus | 10.1 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Manion Lake
Location
County Ranking
Ranked #71 of 80 lakes in Rainy River District
Cleaner Lakes Within 30 Miles
Manion Lake holds Grade B. 5 nearby lakes hold higher grades.
- APettit LakeRainy River District · 2.9 mi · Higher grade (B → A)
- APickerel LakeRainy River District · 4.9 mi · Higher grade (B → A)
- AMount LakeKenora District · 9 mi · Higher grade (B → A)
- ARutter LakeKenora District · 12.1 mi · Higher grade (B → A)
- ADovetail LakeRainy River District · 12.5 mi · Higher grade (B → A)
Nearby Lakes in Rainy River District
Explore Manion Lake across LakeGrade
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Other Grade B Lakes in Ontario
Mesotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Manion 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: 2023-05-21
Monitoring stations: