Upper French River Lake
Parry Sound District, OntarioView mapDirections
Ontario MECP publishes the water-quality measurements for Upper French River Lake. Here is what has been measured.
Upper French River Lake in Parry Sound District, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 2.5 m visibility. Phosphorus: 11.5 µg/L.
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Upper French River Lake is a lake in Parry Sound District County, Ontario.
Source: Ontario open-data programmes (Lake Partner Program and Broad-scale Monitoring) — not the EPA Water Quality Portal, last sampled 2025-07-30. Grade methodology: LakeQuality methodology.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Upper French River 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 Upper French River Lake
These are the measurements Ontario MECP publishes for Upper French River Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8.2 ft. Phosphorus 11.5 µg/L. TSI 43.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.5 m | Measured, not scored |
| Phosphorus | 11.5 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
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Frequently asked questions about Upper French River Lake
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Answers come straight from the public measurements and survey records on this page.
Where is Upper French River Lake?
- Upper French River Lake is a lake in Parry Sound District, Ontario. Its water-quality measurements are published by Ontario MECP and shown on this page as reported.
What is the water quality of Upper French River Lake?
- Upper French River Lake in Parry Sound District, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 2.5 m visibility. Phosphorus: 11.5 µg/L.
Is Upper French River 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 Upper French River 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.