Rimouski-Neigette County, Québec · Water Quality Report Card
Grand Lac Shaw
Grand Lac Shaw in Rimouski-Neigette, Québec received a water quality grade of B (Good). Water clarity: 3 m visibility. Phosphorus: 8.8 µg/L. Chlorophyll-a (algae): 2.8 µg/L.
- Clarity
- 3 m
- Type
- Mesotrophic
Grand Lac Shaw is a mesotrophic lake in Rimouski-Neigette County, Québec. Water quality is graded B based on 3 sampling years through 2014. Compared to the 11 other monitored lakes in Rimouski-Neigette County, Grand Lac Shaw ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2014-08-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 9.8 ft. Phosphorus level: 8.8 µg/L. Chlorophyll-a: 2.8 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 m | C |
| Phosphorus | 8.8 µg/L | A |
| Chlorophyll-a (Algae) | 2.8 µg/L | A |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Grand Lac Shaw
Location
County Ranking
Ranked #6 of 12 lakes in Rimouski-Neigette
Cleaner Lakes Within 30 Miles
Grand Lac Shaw holds Grade B. 3 nearby lakes hold higher grades.
- ALac FerréRimouski-Neigette · 2.9 mi · Higher grade (B → A)
- ALac NoirRimouski-Neigette · 12.9 mi · Higher grade (B → A)
- ALac à GasseRimouski-Neigette · 13.4 mi · Higher grade (B → A)
Nearby Lakes in Rimouski-Neigette
Explore Grand Lac Shaw across LakeGrade
More Québec Lake Rankings
Other Grade B Lakes in Québec
Mesotrophic Lakes in Québec
More records, surveys & data sources
Where this data comes from
Measurements for Grand Lac Shaw 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: 2014-08-01
Monitoring stations: