Le Domaine-du-Roy County, Québec · Water Quality Report Card
Lac Au Mirage
Lac Au Mirage in Le Domaine-du-Roy, Québec received a water quality grade of B (Good). Water clarity: 1.4 m visibility. Phosphorus: 11.6 µg/L. Chlorophyll-a (algae): 3.4 µg/L.
- Clarity
- 1.4 m
- Type
- Mesotrophic
Lac Au Mirage is a mesotrophic lake in Le Domaine-du-Roy County, Québec. Water quality is graded B based on 3 sampling years through 2023. Compared to the 12 other monitored lakes in Le Domaine-du-Roy County, Lac Au Mirage ranks #10 for water quality.
Source: EPA Water Quality Portal sampling records, MELCCFP, last sampled 2023-08-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 4.6 ft. Phosphorus level: 11.6 µg/L. Chlorophyll-a: 3.4 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.4 m | D |
| Phosphorus | 11.6 µg/L | A |
| Chlorophyll-a (Algae) | 3.4 µg/L | A |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
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Fishing Lac Au Mirage
Location
County Ranking
Ranked #10 of 13 lakes in Le Domaine-du-Roy
Cleaner Lakes Within 30 Miles
Lac Au Mirage holds Grade B. 5 nearby lakes hold higher grades.
- BLac la PêCheLe Domaine-du-Roy · 3.3 mi · Higher overall water quality score
- BLac des CommissairesLe Domaine-du-Roy · 3.5 mi · Higher overall water quality score
- BLac PrinzèLesLe Domaine-du-Roy · 5.8 mi · Higher overall water quality score
- BLac ÉCartéLe Domaine-du-Roy · 7.5 mi · Higher overall water quality score
- BLac BouchetteLe Domaine-du-Roy · 11.2 mi · Higher overall water quality score
Nearby Lakes in Le Domaine-du-Roy
Explore Lac Au Mirage 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 Lac Au Mirage 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: 2023-08-01
Monitoring stations: