Algoma District County, Ontario · Water Quality Report Card
Watson Lake
Watson Lake in Algoma District, Ontario received a water quality grade of B (Good). Water clarity: 2 m visibility. Phosphorus: 4.7 µg/L.
- Clarity
- 2 m
- Type
- Oligotrophic
Watson Lake is a cold, clear oligotrophic lake in Algoma District County, Ontario. Water quality is graded B based on 2 sampling years through 2017. Compared to the 217 other monitored lakes in Algoma District County, Watson Lake ranks #211 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2017-05-13. 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: 4.7 µg/L. Trophic State Index: 38.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 m | D |
| Phosphorus | 4.7 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 38 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
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Fishing Watson Lake
Location
County Ranking
Ranked #211 of 218 lakes in Algoma District
Cleaner Lakes Within 30 Miles
Watson Lake holds Grade B. 5 nearby lakes hold higher grades.
- AGalloway LakeAlgoma District · 7 mi · Higher grade (B → A)
- AWard LakeAlgoma District · 12.5 mi · Higher grade (B → A)
- BQuinn LakeAlgoma District · 3.3 mi · Higher overall water quality score
- BHanes LakeAlgoma District · 3.5 mi · Higher overall water quality score
- BLogan LakeAlgoma District · 5.3 mi · Higher overall water quality score
Nearby Lakes in Algoma District
Explore Watson Lake across LakeGrade
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Other Grade B Lakes in Ontario
Oligotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Watson 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: 2017-05-13
Monitoring stations: