Muskoka District County, Ontario · Water Quality Report Card
Brandy Lake
Brandy Lake in Muskoka District, Ontario received a water quality grade of C (Fair). Water clarity: 1.1 m visibility. Phosphorus: 24.9 µg/L.
- Clarity
- 1.1 m
- Type
- Eutrophic
Brandy Lake is a productive, nutrient-rich eutrophic lake in Muskoka District County, Ontario. Water quality is graded C based on 2 sampling years through 2025. Compared to the 169 other monitored lakes in Muskoka District County, Brandy Lake ranks #159 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2025-09-21. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 3.6 ft. Phosphorus level: 24.9 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.1 m | D |
| Phosphorus | 24.9 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Brandy Lake
Location
County Ranking
Ranked #159 of 170 lakes in Muskoka District
Cleaner Lakes Within 30 Miles
Brandy Lake holds Grade C. 5 nearby lakes hold higher grades.
- ARosseau LakeMuskoka District · 6.3 mi · Two grade letters higher (C → A)
- AHenshaw LakeMuskoka District · 2.8 mi · Two grade letters higher (C → A)
- ALeonard LakeMuskoka District · 4.7 mi · Two grade letters higher (C → A)
- BMirror LakeMuskoka District · 2 mi · Higher grade (C → B)
- BButterfly LakeMuskoka District · 5.2 mi · Higher grade (C → B)
Nearby Lakes in Muskoka District
Explore Brandy Lake across LakeGrade
More Ontario Lake Rankings
Other Grade C Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Brandy 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: 2025-09-21
Monitoring stations: