La Haute-Yamaska County, Québec · Water Quality Report Card
RéServoir ChoinièRe
RéServoir ChoinièRe in La Haute-Yamaska, Québec received a water quality grade of C (Fair). Water clarity: 1.7 m visibility. Phosphorus: 19.3 µg/L. Chlorophyll-a (algae): 13.7 µg/L.
- Clarity
- 1.7 m
- Type
- Eutrophic
RéServoir ChoinièRe is a productive, nutrient-rich eutrophic lake in La Haute-Yamaska County, Québec. Water quality is graded C based on 3 sampling years through 2025. Compared to the 3 other monitored lakes in La Haute-Yamaska County, RéServoir ChoinièRe ranks #1 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
Murky, only visible to about 5.6 ft. Phosphorus level: 19.3 µg/L. Chlorophyll-a: 13.7 µg/L. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.7 m | D |
| Phosphorus | 19.3 µg/L | A |
| Chlorophyll-a (Algae) | 13.7 µg/L | C |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing RéServoir ChoinièRe
Location
County Ranking
Ranked #1 of 4 lakes in La Haute-Yamaska
Cleaner Lakes Within 30 Miles
RéServoir ChoinièRe holds Grade C. 4 nearby lakes hold higher grades.
- ALac GaleBrome-Missisquoi · 11.3 mi · Two grade letters higher (C → A)
- BLac BromeBrome-Missisquoi · 12.8 mi · Higher grade (C → B)
- BLac BromontBrome-Missisquoi · 11.1 mi · Higher grade (C → B)
- BLac DavignonBrome-Missisquoi · 15.8 mi · Higher grade (C → B)
Nearby Lakes in La Haute-Yamaska
Explore RéServoir ChoinièRe 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 RéServoir ChoinièRe 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: