Tallan Lake
Peterborough, OntarioView mapDirections
Ontario MECP publishes the water-quality measurements for Tallan Lake. Here is what has been measured.
Tallan Lake in Peterborough, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 6.1 m visibility. Phosphorus: 10.5 µg/L.
Tallan Lake is a lake in Peterborough County, Ontario.
Source: Ontario open-data programmes (Lake Partner Program and Broad-scale Monitoring) — not the EPA Water Quality Portal, last sampled 2022-05-13. Methodology: how these readings are compared.
What Tallan Lake is good for
From access and monitoring records, not editorial picks.
- Clear water20 ft of visibility
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Tallan 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 Tallan Lake
These are the measurements Ontario MECP publishes for Tallan 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 20 ft down. Phosphorus 10.5 µg/L. TSI 36.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.1m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10.5µg/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. | 36 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
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Frequently asked questions about Tallan Lake
Where is Tallan Lake?
- Tallan Lake is a lake in Peterborough, Ontario. Its water-quality measurements are published by Ontario MECP and shown on this page as reported.
What is the water quality of Tallan Lake?
- Tallan Lake in Peterborough, Ontario has water-quality measurements published by Ontario MECP, shown here as reported. Water clarity: 6.1 m visibility. Phosphorus: 10.5 µg/L.
Is Tallan Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Tallan 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.