Region of Waterloo County, Ontario · Water Quality Report Card
Alder Lake
Alder Lake in Region of Waterloo, Ontario received a water quality grade of F (Very Poor). Water clarity: 0.5 m visibility. Phosphorus: 147.5 µg/L.
- Clarity
- 0.5 m
- Type
- Hypereutrophic
Alder Lake is a highly nutrient-loaded hypereutrophic lake in Region of Waterloo County, Ontario. Water quality is graded F based on 2 sampling years through 2021. Compared to the 4 other monitored lakes in Region of Waterloo County, Alder Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2021-11-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.6 ft of visibility. Phosphorus level: 147.5 µg/L. Trophic State Index: 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.5 m | F |
| Phosphorus | 147.5 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Alder Lake
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Fishing Alder Lake
Location
County Ranking
Ranked #5 of 5 lakes in Region of Waterloo
Cleaner Lakes Within 30 Miles
Alder Lake holds Grade F. 5 nearby lakes hold higher grades.
- BSunfish LakeRegion of Waterloo · 10 mi · Two grade letters higher (F → B)
- BParadise LakeRegion of Waterloo · 11.8 mi · Two grade letters higher (F → B)
- CPuslinch LakeWellington · 14.2 mi · Two grade letters higher (F → C)
- CPuslinch LakeWellington · 14.2 mi · Two grade letters higher (F → C)
- CFour Wells LakeRegion of Waterloo · 9.4 mi · Two grade letters higher (F → C)
Nearby Lakes in Region of Waterloo
Explore Alder Lake across LakeGrade
More Ontario Lake Rankings
Other Grade F Lakes in Ontario
Hypereutrophic Lakes in Ontario
More records, surveys & data sources
Where this data comes from
Measurements for Alder 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: 2021-11-20
Monitoring stations: