Muskoka District County, Ontario · Water Quality Report Card
Jessop Lake
Jessop Lake in Muskoka District, Ontario received a water quality grade of C (Fair). Water clarity: 1 m visibility. Phosphorus: 9.1 µg/L.
- Clarity
- 1 m
- Type
- Mesotrophic
Jessop Lake is a mesotrophic lake in Muskoka District County, Ontario. Water quality is graded C based on 2 sampling years through 2024. Compared to the 169 other monitored lakes in Muskoka District County, Jessop Lake ranks #162 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2024-07-02. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 3.3 ft of visibility. Phosphorus level: 9.1 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 m | F |
| Phosphorus | 9.1 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Jessop Lake
Location
County Ranking
Ranked #162 of 170 lakes in Muskoka District
Cleaner Lakes Within 30 Miles
Jessop Lake holds Grade C. 4 nearby lakes hold higher grades.
- AWaseosa LakeMuskoka District · 1.2 mi · Two grade letters higher (C → A)
- APalette LakeMuskoka District · 2.1 mi · Two grade letters higher (C → A)
- ARipple LakeMuskoka District · 2.3 mi · Two grade letters higher (C → A)
- BVernon LakeMuskoka District · 3.5 mi · Higher grade (C → B)
Nearby Lakes in Muskoka District
Explore Jessop Lake across LakeGrade
More Ontario Lake Rankings
Other Grade C Lakes in Ontario
Mesotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Jessop 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: 2024-07-02
Monitoring stations: