Thomas Lake
Halifax, Nova ScotiaView mapDirections
NSECC publishes the water-quality measurements for Thomas Lake. Here is what has been measured.
- Limited data
Thomas Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 4.3 m visibility. Phosphorus: 3 µg/L. Chlorophyll-a (algae): 0.6 µg/L.
Thomas Lake is a lake in Halifax County, Nova Scotia.
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 2007-10-03. Methodology: how these readings are compared.
What Thomas Lake is good for
From access and monitoring records, not editorial picks.
- Clear water13.9 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Thomas Lake is safe to swim in today is a call for Nova Scotia Environment and Climate Change and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Thomas Lake
These are the measurements NSECC publishes for Thomas Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 13.9 ft. Phosphorus 3 µg/L. Chlorophyll-a 0.6 µg/L. TSI 28.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.25m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 3µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 0.6µg/L | Measured, not scored 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. | 28 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
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Fishing Thomas Lake
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Frequently asked questions about Thomas Lake
Where is Thomas Lake?
- Thomas Lake is a lake in Halifax, Nova Scotia. Its water-quality measurements are published by NSECC and shown on this page as reported.
What is the water quality of Thomas Lake?
- Thomas Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 4.3 m visibility. Phosphorus: 3 µg/L. Chlorophyll-a (algae): 0.6 µg/L.
Is Thomas 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
9 measurements from 1 monitoring station, 1974–2007. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Nova Scotia Environment and Climate Change
Nova Scotia Environment and Climate Change2 samples · 1984 - NSDFA
NSDFA1 sample · 2007 - Lands and Forests, NSDOE
Lands and Forests, NSDOE1 sample · 1984 - DOE
DOE1 sample · 1983 - Environment Canada- Shubenacadie Headwaters Enviro
Environment Canada- Shubenacadie Headwaters Enviro1 sample · 1974
Monitoring station identifiers (1)
865
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.