Bertaud Lake
Thunder Bay District, OntarioView mapDirections
Ontario MECP publishes the water-quality measurements for Bertaud Lake. Here is what has been measured.
- 61 ft max depth
- Limited data
Bertaud Lake in Thunder Bay District, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 1.9 m visibility.
Bertaud Lake is a lake in Thunder Bay District County, Ontario with an estimated average depth of about 61 feet.
Source: Ontario open-data programmes (Lake Partner Program and Broad-scale Monitoring) — not the EPA Water Quality Portal, last sampled 2019-05-27. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Bertaud 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 Bertaud Lake
These are the measurements Ontario MECP publishes for Bertaud 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 6.2 ft. TSI 51.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.9m | 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. | 51 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Bertaud Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~18.6 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 Bertaud Lake.
Lake Size & Watershed
Watershed (drainage) area
19 sq mi
HydroLAKES / HydroSHEDS
Surface area
1,028 acres
HydroLAKES / HydroSHEDS
Shoreline
26.2 mi
HydroLAKES / HydroSHEDS
Elevation
1,280 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 Bertaud Lake
Compare lakeside cabins, hotels, and vacation rentals near Bertaud Lake in Thunder Bay District, 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 Bertaud Lake
Prices for Oct 30–Nov 1, 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 Bertaud Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Bertaud Lake
Nearby Lakes in Thunder Bay District
Frequently asked questions about Bertaud Lake
Where is Bertaud Lake?
- Bertaud Lake is a lake in Thunder Bay District, Ontario. Its water-quality measurements are published by Ontario MECP and shown on this page as reported.
What is the water quality of Bertaud Lake?
- Bertaud Lake in Thunder Bay District, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 1.9 m visibility.
Is Bertaud Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Bertaud Lake?
- No published bathymetric survey covers Bertaud Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 61 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Bertaud Lake across LakeQuality
More lakes in Ontario
Other Lakes in Ontario
Eutrophic Lakes in Ontario
Where this data comes from
Measurements for Bertaud 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)