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LakeQuality

Cleaner Lakes Than Lac à L'Anguille

5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.

Lac à L'Anguille carries a Grade B (Good) water quality score. Within 30 miles, 5 lakes hold a higher grade. Lac à Gasse (Rimouski-Neigette County, Grade A, 1 mi away) is the closest meaningful upgrade.

Reviewed by LakeQuality Editorial Team · Updated
1
A

Lac à Gasse

Rimouski-Neigette County, Québec · 1 mi from Lac à L'Anguille
  • +Higher grade (B → A)
  • +Lower phosphorus (11.1 vs 18.9 µg/L)
2
A

Lac Noir

Rimouski-Neigette County, Québec · 7.3 mi from Lac à L'Anguille
  • +Higher grade (B → A)
  • ++7.2 ft water clarity
  • +Lower phosphorus (6.7 vs 18.9 µg/L)
3
A

Lac Ferré

Rimouski-Neigette County, Québec · 14.7 mi from Lac à L'Anguille
  • +Higher grade (B → A)
  • ++9.4 ft water clarity
  • +Lower phosphorus (4.2 vs 18.9 µg/L)
4
B

Lac Plourde

Rimouski-Neigette County, Québec · 9.7 mi from Lac à L'Anguille
  • +Higher overall water quality score
  • ++3.1 ft water clarity
  • +Lower phosphorus (11 vs 18.9 µg/L)
5
B

Lac Neigette

Rimouski-Neigette County, Québec · 9.7 mi from Lac à L'Anguille
  • +Higher overall water quality score
  • ++2.1 ft water clarity
  • +Lower phosphorus (9.9 vs 18.9 µg/L)

Reading the cohort

Within 30 miles of Lac à L'Anguille, 5 water bodies score higher than its Grade B on the same EPA water-quality metrics. That density of cleaner options is itself a signal — when several nearby lakes score better on the same indicators, the issues at Lac à L'Anguille are typically lake-specific (depth, watershed inflow, stratification pattern) rather than regional. The choice for a swim, paddle, or fishing trip is genuinely between meaningfully different water bodies, not between marginal differences in the same dataset.

The closest cleaner alternative — Lac à Gasse in Rimouski-Neigette County, Grade A — sits 1 miles from Lac à L'Anguille. At that distance, the substitution cost is essentially zero: same drive time, same regional access, demonstrably cleaner water on the EPA indicators. For repeat visitors who care about clarity or phosphorus levels, swapping the routine to Lac à Gasse is mostly a habit change rather than a logistics change.

The EPA water-quality grading combines clarity (Secchi depth), phosphorus, and chlorophyll-a measurements from state environmental sampling. A higher letter grade reflects measurably cleaner water on those indicators, not subjective beauty or access quality — a Grade A lake might have worse boat-launch facilities or shoreline access than a Grade C neighbor, so the ranking is one input alongside the rest of trip planning. See the methodology page for the full grading formula.

How this list is built

Every lake on LakeQuality has a calculated grade from EPA Water Quality Portal samples — secchi depth, total phosphorus, and chlorophyll-a measured against Metropolitan Council thresholds. To suggest cleaner alternatives, we filter lakes within 30 miles to those with a strictly higher numeric score, then rank by grade improvement with a small proximity tiebreak. Cross-state and limited-data lakes are excluded so the list stays locally relevant.

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