Urban agglomeration of Québec County Lake Quality
Québec, 3 lakes, average grade B (Good)
Only 3 lakes in Urban agglomeration of Québec County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. With an average grade of B, Urban agglomeration of Québec County sits comfortably above the Québec median.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Lac Bonhomme (A) is the cleanest in the county.
Quick Answers for Urban agglomeration of Québec County
Planning a trip? Check special fishing regulations for Lac Bonhomme — or check the official Québec fishing regulations.
All Lakes in Urban agglomeration of Québec County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac Bonhomme | A | 14.4 ft | 5.6 µg/L |
| 2 | Lac Jaune | B | 5.1 ft | 9.7 µg/L |
| 3 | Lac Saint-Augustin | D | 5.1 ft | - |
Other Counties in Québec
See how Urban agglomeration of Québec County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 38 states.
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Source: EPA National Aquatic Resource Surveys, 2026.