Grimsthorpe Lake
Renfrew, OntarioView mapDirections
Ontario MECP publishes the water-quality measurements for Grimsthorpe Lake. Here is what has been measured.
- Limited data
Grimsthorpe Lake in Renfrew, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Phosphorus: 13.6 µg/L.
Grimsthorpe 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 2024-05-16. 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 Grimsthorpe 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 Grimsthorpe Lake
These are the measurements Ontario MECP publishes for Grimsthorpe 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 13.6 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 13.6µg/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. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Grimsthorpe Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Grimsthorpe Lake
Compare lakeside cabins, hotels, and vacation rentals near Grimsthorpe 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 Grimsthorpe 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 Grimsthorpe Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Grimsthorpe Lake
Nearby Lakes in Renfrew
Frequently asked questions about Grimsthorpe Lake
Where is Grimsthorpe Lake?
- Grimsthorpe 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 Grimsthorpe Lake?
- Grimsthorpe Lake in Renfrew, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Phosphorus: 13.6 µg/L.
Is Grimsthorpe Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Grimsthorpe Lake across LakeQuality
More lakes in Ontario
Other Lakes in Ontario
Mesotrophic Lakes in Ontario
Where this data comes from
Measurements for Grimsthorpe 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.