Frontenac County, Ontario · Water Quality Report Card
Cox'S Lake
Cox'S Lake in Frontenac, Ontario received a water quality grade of B (Good). Water clarity: 2.3 m visibility. Phosphorus: 9.6 µg/L.
- Clarity
- 2.3 m
- Type
- Mesotrophic
Cox'S Lake is a mesotrophic lake in Frontenac County, Ontario. Water quality is graded B based on 2 sampling years through 2023. Compared to the 106 other monitored lakes in Frontenac County, Cox'S Lake ranks #86 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2023-05-17. 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 7.5 ft. Phosphorus level: 9.6 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 m | C |
| Phosphorus | 9.6 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Cox'S Lake
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Fishing Cox'S Lake
Location
County Ranking
Ranked #86 of 107 lakes in Frontenac
Cleaner Lakes Within 30 Miles
Cox'S Lake holds Grade B. 3 nearby lakes hold higher grades.
- ABig Clear LakeFrontenac · 3 mi · Higher grade (B → A)
- ACarnahan LakeFrontenac · 3.9 mi · Higher grade (B → A)
- AWhite LakeFrontenac · 5.8 mi · Higher grade (B → A)
Nearby Lakes in Frontenac
Explore Cox'S 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 Cox'S 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: 2023-05-17
Monitoring stations: