Mackay Lake
Eastern Ontario, OntarioView mapDirections
Ontario MECP publishes the water-quality measurements for Mackay Lake. Here is what has been measured.
- Limited data
Mackay Lake in Eastern Ontario, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 3 m visibility.
Mackay Lake is a lake in Eastern Ontario County, Ontario.
Source: Ontario open-data programmes (Lake Partner Program and Broad-scale Monitoring) — not the EPA Water Quality Portal, last sampled 2000-08-23. Methodology: how these readings are compared.
What Mackay Lake is good for
From access and monitoring records, not editorial picks.
- Clear water9.8 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Mackay 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 Mackay Lake
These are the measurements Ontario MECP publishes for Mackay 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 9.8 ft. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Mackay Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Mackay Lake
Compare lakeside cabins, hotels, and vacation rentals near Mackay Lake in Eastern Ontario, 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 Mackay Lake
Prices for Nov 6–8, 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 Mackay Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Mackay Lake
Nearby Lakes in Eastern Ontario
Frequently asked questions about Mackay Lake
Where is Mackay Lake?
- Mackay Lake is a lake in Eastern Ontario, Ontario. Its water-quality measurements are published by Ontario MECP and shown on this page as reported.
What is the water quality of Mackay Lake?
- Mackay Lake in Eastern Ontario, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 3 m visibility.
Is Mackay Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Mackay Lake across LakeQuality
More lakes in Ontario
Other Lakes in Ontario
Mesotrophic Lakes in Ontario
Where this data comes from
Measurements for Mackay 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.