Kenora District County, Ontario · Water Quality Report Card
Ottermere Lake
Ottermere Lake in Kenora District, Ontario received a water quality grade of A (Excellent). Phosphorus: 19.2 µg/L.
- Type
- Mesotrophic
Ottermere Lake is a mesotrophic lake in Kenora District County, Ontario. Water quality is graded A based on 1 sampling years through 2025. Compared to the 341 other monitored lakes in Kenora District County, Ottermere Lake ranks #24 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2025-08-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
No clarity data. Phosphorus level: 19.2 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 19.2 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Ottermere Lake
Location
County Ranking
Ranked #24 of 342 lakes in Kenora District
Nearby Lakes in Kenora District
Explore Ottermere Lake across LakeGrade
More Ontario Lake Rankings
Other Grade A Lakes in Ontario
Mesotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Ottermere 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: 2025-08-01
Monitoring stations: