Nipissing District County, Ontario · Water Quality Report Card
Thieving Bear Lake
Thieving Bear Lake in Nipissing District, Ontario received a water quality grade of B (Good). Water clarity: 2.6 m visibility. Phosphorus: 6.5 µg/L.
- Clarity
- 2.6 m
- Type
- Oligotrophic
Thieving Bear Lake is a cold, clear oligotrophic lake in Nipissing District County, Ontario. Water quality is graded B based on 2 sampling years through 2019. Compared to the 280 other monitored lakes in Nipissing District County, Thieving Bear Lake ranks #235 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2019-05-28. 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 8.5 ft. Phosphorus level: 6.5 µg/L. Trophic State Index: 39.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.6 m | C |
| Phosphorus | 6.5 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 39 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
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Fishing Thieving Bear Lake
Location
County Ranking
Ranked #235 of 281 lakes in Nipissing District
Cleaner Lakes Within 30 Miles
Thieving Bear Lake holds Grade B. 4 nearby lakes hold higher grades.
- ARib LakeNipissing District · 5.6 mi · Higher grade (B → A)
- AMclean LakeNipissing District · 7.1 mi · Higher grade (B → A)
- AAnima Nipissing LakeTimiskaming District · 8.1 mi · Higher grade (B → A)
- AKanichee LakeNipissing District · 4.2 mi · Higher grade (B → A)
Nearby Lakes in Nipissing District
Explore Thieving Bear Lake across LakeGrade
More Ontario Lake Rankings
Other Grade B Lakes in Ontario
Oligotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Thieving Bear 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: 2019-05-28
Monitoring stations: