Oak Lake
Central Ontario, OntarioView mapDirections
Ontario MECP publishes the water-quality measurements for Oak Lake. Here is what has been measured.
- 42 ft max depth
Oak Lake in Central Ontario, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 5.2 m visibility. Phosphorus: 13.3 µg/L.
Oak Lake is a lake in Central Ontario County, Ontario with an estimated average depth of about 42 feet.
Source: Ontario open-data programmes (Lake Partner Program and Broad-scale Monitoring) — not the EPA Water Quality Portal, last sampled 2025-10-07. Methodology: how these readings are compared.
What Oak Lake is good for
From access and monitoring records, not editorial picks.
- Clear water17.1 ft of visibility
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Oak 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 Oak Lake
These are the measurements Ontario MECP publishes for Oak Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 17.1 ft down. Phosphorus 13.3 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.2m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 13.3µg/L | Measured, not scored 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. | 39 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Oak Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~12.8 m est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Ontario has not published bathymetry for Oak Lake.
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Surface area
119 acres
HydroLAKES / HydroSHEDS
Shoreline
2.3 mi
HydroLAKES / HydroSHEDS
Elevation
666 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Stays via Stay22
Stays near Oak Lake
Compare lakeside cabins, hotels, and vacation rentals near Oak Lake in Central 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 Oak 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 Oak Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Oak Lake
Nearby Lakes in Central Ontario
Frequently asked questions about Oak Lake
Where is Oak Lake?
- Oak Lake is a lake in Central Ontario, Ontario. Its water-quality measurements are published by Ontario MECP and shown on this page as reported.
What is the water quality of Oak Lake?
- Oak Lake in Central Ontario, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 5.2 m visibility. Phosphorus: 13.3 µg/L.
Is Oak Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Oak Lake?
- No published bathymetric survey covers Oak Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 42 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Oak Lake across LakeQuality
More lakes in Ontario
Other Lakes in Ontario
Oligotrophic Lakes in Ontario
Where this data comes from
Measurements for Oak 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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)