Muskoka District County, Ontario · Water Quality Report Card
Garter Snake Lake
Garter Snake Lake in Muskoka District, Ontario received a water quality grade of D (Poor). Water clarity: 1.8 m visibility.
- Clarity
- 1.8 m
- Type
- Eutrophic
Garter Snake Lake is a productive, nutrient-rich eutrophic lake in Muskoka District County, Ontario. Water quality is graded D based on 1 sampling years through 2025. Compared to the 169 other monitored lakes in Muskoka District County, Garter Snake Lake ranks #170 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2025-09-28. 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
Murky, only visible to about 5.9 ft. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.8 m | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Garter Snake Lake
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Fishing Garter Snake Lake
Location
County Ranking
Ranked #170 of 170 lakes in Muskoka District
Cleaner Lakes Within 30 Miles
Garter Snake Lake holds Grade D. 5 nearby lakes hold higher grades.
- ASpring LakeMuskoka District · 3.6 mi · Two grade letters higher (D → A)
- AWood LakeMuskoka District · 4.4 mi · Two grade letters higher (D → A)
- ALeech LakeMuskoka District · 6.4 mi · Two grade letters higher (D → A)
- BProspect LakeMuskoka District · 2 mi · Two grade letters higher (D → B)
- BBird LakeMuskoka District · 6.6 mi · Two grade letters higher (D → B)
Nearby Lakes in Muskoka District
Explore Garter Snake Lake across LakeGrade
More Ontario Lake Rankings
Other Grade D Lakes in Ontario
Eutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Garter Snake 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: 2025-09-28
Monitoring stations: