Sudbury District County, Ontario · Water Quality Report Card
Dill Lake
Dill Lake in Sudbury District, Ontario received a water quality grade of D (Poor). Water clarity: 1.3 m visibility.
- Clarity
- 1.3 m
- Type
- Eutrophic
Dill Lake is a productive, nutrient-rich eutrophic lake in Sudbury District County, Ontario. Water quality is graded D based on 1 sampling years through 2025. Compared to the 264 other monitored lakes in Sudbury District County, Dill Lake ranks #264 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2025-05-20. 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 4.3 ft. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.3 m | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Dill Lake
Location
County Ranking
Ranked #264 of 265 lakes in Sudbury District
Cleaner Lakes Within 30 Miles
Dill Lake holds Grade D. 5 nearby lakes hold higher grades.
- ARaft LakeSudbury District · 2.5 mi · Two grade letters higher (D → A)
- ABroder LakeSudbury District · 2.8 mi · Two grade letters higher (D → A)
- ABrodill LakeSudbury District · 2.6 mi · Two grade letters higher (D → A)
- AMcfarlane LakeSudbury District · 3.4 mi · Two grade letters higher (D → A)
- ARichard LakeSudbury District · 3.4 mi · Two grade letters higher (D → A)
Nearby Lakes in Sudbury District
Explore Dill 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 Dill 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: 2025-05-20
Monitoring stations: