Loon Lake
Halifax, Nova Scotia68 haView mapDirections
NSECC publishes the water-quality measurements for Loon Lake. Here is what has been measured.
- 20 ft max depth
- Limited data
Loon Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 2.7 m visibility. Phosphorus: 6.8 µg/L. Chlorophyll-a (algae): 0.5 µg/L. Maximum depth: 19.7 ft. Surface area: 168.3 acres.
Loon Lake is a 168-acre lake in Halifax County, Nova Scotia with a maximum depth of 20 feet (11-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1991-08-07. 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 Loon 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 Loon Lake
These are the measurements NSECC publishes for Loon Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8.9 ft. Phosphorus 6.8 µg/L. Chlorophyll-a 0.5 µg/L. TSI 34.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.7m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 6.8µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 0.5µg/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. | 34 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
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Lake Details
Max depth
6 m
Average depth
3.2 m
Surface area
68 ha
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Frequently asked questions about Loon Lake
Where is Loon Lake?
- Loon 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 Loon Lake?
- Loon Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 2.7 m visibility. Phosphorus: 6.8 µg/L. Chlorophyll-a (algae): 0.5 µg/L. Maximum depth: 19.7 ft. Surface area: 168.3 acres.
Is Loon Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Loon Lake?
- Loon Lake has a maximum depth of 19.7 feet and an average depth of 10.5 feet. The lake covers 168.3 acres.
Explore Loon Lake across LakeQuality
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Where this data comes from
13 measurements from 3 monitoring stations, 1971–1991. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Soil and Water Conservation Society of Metro
Soil and Water Conservation Society of Metro3 samples · 1990 - NS Dept. of Fisheries
NS Dept. of Fisheries1 sample · 1991 - Lands and Forests
Lands and Forests1 sample · 1979 - Environment Canada- Shubenacadie Headwaters Enviro
Environment Canada- Shubenacadie Headwaters Enviro1 sample · 1974 - Submitting organization not recorded for these samples1 sample · 1971
Some records reached the portal without a submitting organization. Those samples are counted above but not attributed.
Monitoring station identifiers (3)
20205914
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.