Thunder Bay District County, Ontario · Water Quality Report Card
Nalla Lake
Nalla Lake in Thunder Bay District, Ontario received a water quality grade of B (Good). Water clarity: 4 m visibility. Phosphorus: 20.2 µg/L.
- Clarity
- 4 m
- Type
- Mesotrophic
Nalla Lake is a mesotrophic lake in Thunder Bay District County, Ontario. Water quality is graded B based on 2 sampling years through 2013. Compared to the 301 other monitored lakes in Thunder Bay District County, Nalla Lake ranks #185 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2013-08-09. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 13 ft. Phosphorus level: 20.2 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.95 m | B |
| Phosphorus | 20.2 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Nalla Lake
Location
County Ranking
Ranked #185 of 302 lakes in Thunder Bay District
Cleaner Lakes Within 30 Miles
Nalla Lake holds Grade B. 3 nearby lakes hold higher grades.
- AWideman L. LakeThunder Bay District · 1.6 mi · Higher grade (B → A)
- ABisect LakeThunder Bay District · 2.6 mi · Higher grade (B → A)
- ABass LakeThunder Bay District · 2.8 mi · Higher grade (B → A)
Nearby Lakes in Thunder Bay District
Explore Nalla 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 Nalla 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: 2013-08-09
Monitoring stations: