Sudbury District County, Ontario · Water Quality Report Card
Little Ridley Lake
Little Ridley Lake in Sudbury District, Ontario received a water quality grade of B (Good). Water clarity: 1.5 m visibility. Phosphorus: 13.5 µg/L.
- Clarity
- 1.5 m
- Type
- Mesotrophic
Little Ridley Lake is a mesotrophic lake in Sudbury District County, Ontario. Water quality is graded B based on 2 sampling years through 2015. Compared to the 264 other monitored lakes in Sudbury District County, Little Ridley Lake ranks #242 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2015-05-14. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 4.9 ft. Phosphorus level: 13.5 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.5 m | D |
| Phosphorus | 13.5 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Little Ridley Lake
Location
County Ranking
Ranked #242 of 265 lakes in Sudbury District
Cleaner Lakes Within 30 Miles
Little Ridley Lake holds Grade B. 5 nearby lakes hold higher grades.
- ARollo LakeSudbury District · 2.6 mi · Higher grade (B → A)
- AHanson LakeSudbury District · 4.9 mi · Higher grade (B → A)
- ACree LakeSudbury District · 9 mi · Higher grade (B → A)
- ANemegosenda LakeSudbury District · 20.4 mi · Higher grade (B → A)
- BDenyes LakeSudbury District · 6.5 mi · Higher overall water quality score
Nearby Lakes in Sudbury District
Explore Little Ridley Lake across LakeGrade
More Ontario Lake Rankings
Other Grade B Lakes in Ontario
Mesotrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Little Ridley 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: 2015-05-14
Monitoring stations: