Rainy River District County, Ontario · Water Quality Report Card
Otukamamoan Lake
Otukamamoan Lake in Rainy River District, Ontario received a water quality grade of B (Good). Water clarity: 2.9 m visibility. Phosphorus: 9.3 µg/L.
- Clarity
- 2.9 m
- Type
- Mesotrophic
Otukamamoan 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, Otukamamoan Lake ranks #51 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
Moderate clarity, visible to about 9.5 ft. Phosphorus level: 9.3 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.9 m | C |
| Phosphorus | 9.3 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Otukamamoan Lake
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Fishing Otukamamoan Lake
Location
County Ranking
Ranked #51 of 80 lakes in Rainy River District
Cleaner Lakes Within 30 Miles
Otukamamoan Lake holds Grade B. 3 nearby lakes hold higher grades.
- AEntwine LakeKenora District · 16.8 mi · Higher grade (B → A)
- AVista LakeKenora District · 14.1 mi · Higher grade (B → A)
- ABad Vermilion LakeRainy River District · 16.5 mi · Higher grade (B → A)
Nearby Lakes in Rainy River District
Explore Otukamamoan 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 Otukamamoan 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: