Long Bridge Lake
Halifax, Nova Scotia70 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.
- 39 ft max depth
- Limited data
Long Bridge 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: 4.8 m visibility. Phosphorus: 2 µg/L. Chlorophyll-a (algae): 2.4 µg/L. Maximum depth: 39.4 ft. Surface area: 172 acres.
- Clarity
- 4.8 m
- Max depth
- 12 m
- Area
- 70 ha
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Why Long Bridge 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 Long Bridge Lake at any level of sampling. Sampling here has recorded water clarity, phosphorus and 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.
Long Bridge Lake is a 172-acre lake in Halifax County, Nova Scotia with a maximum depth of 39 feet (18-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 2017-08-23. Grade methodology: LakeQuality methodology.
What Long Bridge Lake is good for
From access and monitoring records, not editorial picks.
- Clear water15.7 ft of visibility
- Deep water39.4 ft surveyed max depth
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Long Bridge Lake
These are the measurements NSECC publishes for Long Bridge Lake. No A–F letter applies here: see why.
Crystal clear, you can see 15.7 ft down. Phosphorus 2 µg/L. Chlorophyll-a 2.4 µg/L. TSI 30.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.8 m | Measured, not scored |
| Phosphorus | 2 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 2.4 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 30 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 12 m |
| Average Depth | 5.5 m |
| Surface Area | 70 ha |
Fishing Long Bridge Lake
Nearby Lakes in Halifax
Frequently asked questions about Long Bridge Lake
Where is Long Bridge Lake?
- Long Bridge 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 Long Bridge Lake?
- Long Bridge 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: 4.8 m visibility. Phosphorus: 2 µg/L. Chlorophyll-a (algae): 2.4 µg/L. Maximum depth: 39.4 ft. Surface area: 172 acres.
Is Long Bridge Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Long Bridge Lake?
- Long Bridge Lake has a maximum depth of 39.4 feet and an average depth of 18 feet. The lake covers 172 acres.
Explore Long Bridge Lake across LakeQuality
More lakes in Nova Scotia
Other Lakes in Nova Scotia
Oligotrophic Lakes in Nova Scotia
Where this data comes from
4 measurements from 1 monitoring station, 1974–2017. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- NS Department of Fisheries & Aquaculture
NS Department of Fisheries & Aquaculture1 sample · 2017 - Lands and Forests
Lands and Forests1 sample · 1974
Monitoring station identifiers (1)
58
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.