Urban agglomeration of La Tuque County Lake Quality
Québec, 8 lakes, average grade A (Excellent)
Urban agglomeration of La Tuque County has 8 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The county's average grade is A — among the cleanest in Québec. 4 lakes pull an A on their own, and almost none fall into the D or F brackets.
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 la Tuque (A) is the cleanest in the county.
Quick Answers for Urban agglomeration of La Tuque County
Planning a trip? Check special fishing regulations for Lac la Tuque — or check the official Québec fishing regulations.
All Lakes in Urban agglomeration of La Tuque County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lac la Tuque | A | 17.1 ft | 3.3 µg/L |
| 2 | Lac Wayagamac | A | 18 ft | 2.5 µg/L |
| 3 | Lac à Beauce | A | 13.8 ft | 4.7 µg/L |
| 4 | Lac Aux Brochets | A | 11.8 ft | 5.9 µg/L |
| 5 | Lac Lapointe | B | 8.9 ft | 8.4 µg/L |
| 6 | Lac Chat | B | 7.2 ft | 7.8 µg/L |
| 7 | Lac à la Ligne | B | 9.2 ft | 7.4 µg/L |
| 8 | Lac Mauser | B | 5.2 ft | 9.7 µg/L |
Other Counties in Québec
See how Urban agglomeration of La Tuque 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.