South Loon Lake
Halifax, Nova Scotia17 haView mapDirections
No A–F letter for this lake. The letter is scored against EPA reference conditions for a lake’s ecoregion, and those stop at the US border. Here is what has been measured.
- 18 ft max depth
- Limited data
South Loon Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC and no A–F letter. The letter's EPA reference conditions stop at the US border. Water clarity: 2.9 m visibility. Phosphorus: 3 µg/L. Maximum depth: 18 ft. Surface area: 41.3 acres.
- Clarity
- 2.9 m
- Max depth
- 5.5 m
- Area
- 17 ha
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Why South Loon Lake has no A–F letter
The LakeQuality letter is scored against EPA National Lakes Assessment reference conditions for a lake’s ecoregion, and those stop at the US border. There is no reference condition for Nova Scotia, so the scale cannot be applied to South Loon Lake at any level of sampling. Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
This is not a gap in the monitoring record. NSECC publishes these measurements directly, and everything below that has been measured is reported on this page as NSECC reports it.
Monitoring: Nova Scotia Environment and Climate Change. Read the full grading methodology.
South Loon Lake is a 41-acre lake in Halifax County, Nova Scotia with a maximum depth of 18 feet (5-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1984-09-11. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for South Loon Lake
These are the measurements NSECC publishes for South Loon Lake. No A–F letter applies here: see why.
Moderate clarity, visible to about 9.5 ft. Phosphorus 3 µg/L. TSI 32.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.9 m | Measured, not scored |
| Phosphorus | 3 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 32 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 5.5 m |
| Average Depth | 1.6 m |
| Surface Area | 17 ha |
Fishing South Loon Lake
Nearby Lakes in Halifax
Frequently asked questions about South Loon Lake
Where is South Loon Lake?
- South Loon Lake is a lake in Halifax, Nova Scotia. Its water-quality measurements are published by NSECC, and it carries no A–F letter, because no reference condition exists for lakes in this region, so the assessment thresholds behind the A–F scale cannot be applied here.
What is the water quality grade for South Loon Lake?
- South Loon Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC and no A–F letter. The letter's EPA reference conditions stop at the US border. Water clarity: 2.9 m visibility. Phosphorus: 3 µg/L. Maximum depth: 18 ft. Surface area: 41.3 acres.
Is South Loon Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is South Loon Lake?
- South Loon Lake has a maximum depth of 18 feet and an average depth of 5.1 feet. The lake covers 41.3 acres.
Explore South Loon Lake across LakeQuality
More lakes in Nova Scotia
Other Lakes in Nova Scotia
Oligotrophic Lakes in Nova Scotia
Where this data comes from
2 measurements from 1 monitoring station, 1984. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Lands and Forests, NSDOE
Lands and Forests, NSDOE1 sample · 1984
Monitoring station identifiers (1)
913
Canadian lakes are published with the measurements their provincial programme reports, and without a LakeQuality A–F letter. The letter is scored against EPA reference conditions for a lake’s ecoregion, and the EPA does not survey these lakes. See how grades are calculated and data sources.