Lac Coulonge Lake
Pontiac, OntarioView mapDirections
Ontario MECP publishes the water-quality measurements for Lac Coulonge Lake. Here is what has been measured.
- Limited data
Lac Coulonge Lake in Pontiac, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 1.6 m visibility.
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Lac Coulonge Lake is a lake in Pontiac County, Ontario.
Source: Ontario open-data programmes (Lake Partner Program and Broad-scale Monitoring) — not the EPA Water Quality Portal, last sampled 2019-05-15. Grade methodology: LakeQuality methodology.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lac Coulonge Lake is safe to swim in today is a call for the Ontario Ministry of the Environment, Conservation and Parks and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lac Coulonge Lake
These are the measurements Ontario MECP publishes for Lac Coulonge Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5.2 ft. TSI 53.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 m | Measured, not scored |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Frequently asked questions about Lac Coulonge Lake
Ask about Lac Coulonge Lake
Answers come straight from the public measurements and survey records on this page.
Where is Lac Coulonge Lake?
- Lac Coulonge Lake is a lake in Pontiac, Ontario. Its water-quality measurements are published by Ontario MECP and shown on this page as reported.
What is the water quality of Lac Coulonge Lake?
- Lac Coulonge Lake in Pontiac, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 1.6 m visibility.
Is Lac Coulonge Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Lac Coulonge Lake come from Ontario open-data programmes (Lake Partner Program and Broad-scale Monitoring), not the EPA Water Quality Portal. Per-sample source details are not recorded for this lake. Contains information licensed under the Open Government Licence – Ontario. See data sources.