D'Autray County, Québec · Water Quality Report Card
Lac Hamelin
Lac Hamelin in D'Autray, Québec received a water quality grade of C (Fair). Water clarity: 0.9 m visibility. Phosphorus: 21.3 µg/L. Chlorophyll-a (algae): 8.2 µg/L.
- Clarity
- 0.9 m
- Type
- Eutrophic
Lac Hamelin is a productive, nutrient-rich eutrophic lake in D'Autray County, Québec. Water quality is graded C based on 3 sampling years through 2025. Compared to the 13 other monitored lakes in D'Autray County, Lac Hamelin ranks #13 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2025-08-01. 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 ft of visibility. Phosphorus level: 21.3 µg/L. Chlorophyll-a: 8.2 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.9 m | F |
| Phosphorus | 21.3 µg/L | B |
| Chlorophyll-a (Algae) | 8.2 µg/L | B |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Lac Hamelin
Location
County Ranking
Ranked #13 of 14 lakes in D'Autray
Cleaner Lakes Within 30 Miles
Lac Hamelin holds Grade C. 5 nearby lakes hold higher grades.
- ALac ThomasD'Autray · 6.9 mi · Two grade letters higher (C → A)
- ALac CreuxD'Autray · 8.6 mi · Two grade letters higher (C → A)
- ALac DelignyD'Autray · 7.2 mi · Two grade letters higher (C → A)
- ALac CrocheD'Autray · 7.9 mi · Two grade letters higher (C → A)
- ALac à L'ÎleD'Autray · 8.4 mi · Two grade letters higher (C → A)
Nearby Lakes in D'Autray
Explore Lac Hamelin across LakeGrade
More Québec Lake Rankings
Other Grade C Lakes in Québec
Eutrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Lac Hamelin 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: 2025-08-01
Monitoring stations: