Lennox and Addington County, Ontario · Water Quality Report Card
Effingham Lake
Effingham Lake in Lennox and Addington, Ontario received a water quality grade of B (Good). Water clarity: 1.9 m visibility. Phosphorus: 9.5 µg/L.
- Clarity
- 1.9 m
- Type
- Mesotrophic
Effingham Lake is a mesotrophic lake in Lennox and Addington County, Ontario. Water quality is graded B based on 2 sampling years through 2023. Compared to the 17 other monitored lakes in Lennox and Addington County, Effingham Lake ranks #18 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2023-08-01. 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: 9.5 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.9 m | D |
| Phosphorus | 9.5 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Effingham Lake
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Fishing Effingham Lake
Location
County Ranking
Ranked #18 of 18 lakes in Lennox and Addington
Cleaner Lakes Within 30 Miles
Effingham Lake holds Grade B. 5 nearby lakes hold higher grades.
- AMazinaw LakeFrontenac · 10.3 mi · Higher grade (B → A)
- AJoeperry LakeLennox and Addington · 5.4 mi · Higher grade (B → A)
- AOtter LakeLennox and Addington · 5.8 mi · Higher grade (B → A)
- AWeslemkoon LakeLennox and Addington · 5.9 mi · Higher grade (B → A)
- AKishkebus LakeFrontenac · 10.5 mi · Higher grade (B → A)
Nearby Lakes in Lennox and Addington
Explore Effingham 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 Effingham 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: 2023-08-01
Monitoring stations: