Rainy River District County, Ontario · Water Quality Report Card
Calder Lake
Calder Lake in Rainy River District, Ontario received a water quality grade of B (Good). Water clarity: 1.9 m visibility. Phosphorus: 12.9 µg/L.
- Clarity
- 1.9 m
- Type
- Mesotrophic
Calder Lake is a mesotrophic lake in Rainy River District County, Ontario. Water quality is graded B based on 2 sampling years through 2010. Compared to the 79 other monitored lakes in Rainy River District County, Calder Lake ranks #62 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2010-05-04. 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 6.2 ft. Phosphorus level: 12.9 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.9 m | D |
| Phosphorus | 12.9 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Calder Lake
Location
County Ranking
Ranked #62 of 80 lakes in Rainy River District
Cleaner Lakes Within 30 Miles
Calder Lake holds Grade B. 5 nearby lakes hold higher grades.
- AKaiashkons LakeKenora District · 9.4 mi · Higher grade (B → A)
- ALoonhaunt LakeKenora District · 4.8 mi · Higher grade (B → A)
- ALoonhaunt LakeKenora District · 5 mi · Higher grade (B → A)
- APipestone LakeKenora District · 8.1 mi · Higher grade (B → A)
- ABurditt LakeRainy River District · 10.2 mi · Higher grade (B → A)
Nearby Lakes in Rainy River District
Explore Calder 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 Calder 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: 2010-05-04
Monitoring stations: