Upper Mallard Lake
Renfrew, OntarioView mapDirections
Ontario MECP publishes the water-quality measurements for Upper Mallard Lake. Here is what has been measured.
- Limited data
Upper Mallard Lake in Renfrew, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Phosphorus: 9.4 µg/L.
Stays via Stay22
Stays near Upper Mallard Lake
Compare lakeside cabins, hotels, and vacation rentals near Upper Mallard Lake in Renfrew, Ontario — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Upper Mallard Lake
Prices for Sep 18–20, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow Upper Mallard Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Upper Mallard Lake is a lake in Renfrew County, Ontario.
Source: Ontario open-data programmes (Lake Partner Program and Broad-scale Monitoring) — not the EPA Water Quality Portal, last sampled 2003-08-12. 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 Upper Mallard 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 Mallard Lake
These are the measurements Ontario MECP publishes for Upper Mallard Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 9.4 µg/L. TSI 36.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 9.4 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Fishing Upper Mallard Lake
Nearby Lakes in Renfrew
Frequently asked questions about Upper Mallard Lake
Ask about Upper Mallard Lake
Answers come straight from the public measurements and survey records on this page.
Where is Upper Mallard Lake?
- Upper Mallard Lake is a lake in Renfrew, Ontario. Its water-quality measurements are published by Ontario MECP and shown on this page as reported.
What is the water quality of Upper Mallard Lake?
- Upper Mallard Lake in Renfrew, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Phosphorus: 9.4 µg/L.
Is Upper Mallard Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Upper Mallard Lake across LakeQuality
More lakes in Ontario
Other Lakes in Ontario
Oligotrophic Lakes in Ontario
Where this data comes from
Measurements for Upper Mallard 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.