Middlesex County, Ontario · Water Quality Report Card
Fanshawe Lake
Fanshawe Lake in Middlesex, Ontario received a water quality grade of D (Poor). Water clarity: 0.8 m visibility. Phosphorus: 46.1 µg/L.
- Clarity
- 0.8 m
- Type
- Eutrophic
Fanshawe Lake is a productive, nutrient-rich eutrophic lake in Middlesex County, Ontario. Water quality is graded D based on 2 sampling years through 2022.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2022-04-05. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 2.6 ft of visibility. Phosphorus level: 46.1 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.8 m | F |
| Phosphorus | 46.1 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Fanshawe Lake
Location
County Ranking
Ranked #1 of 1 lakes in Middlesex
Cleaner Lakes Within 30 Miles
Fanshawe Lake holds Grade D. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Middlesex
Explore Fanshawe Lake across LakeGrade
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Other Grade D Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Fanshawe 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: 2022-04-05
Monitoring stations: