Tangier Grand Lake
Halifax, Nova Scotia785 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.
- 98 ft max depth
- Limited data
Tangier Grand 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: 4.1 m visibility. Maximum depth: 98.4 ft. Surface area: 1940 acres.
- Clarity
- 4.1 m
- Max depth
- 30 m
- Area
- 785 ha
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Why Tangier Grand 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 Tangier Grand Lake at any level of sampling. Sampling here has recorded water clarity, but not 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.
Tangier Grand Lake is a 1,940-acre lake in Halifax County, Nova Scotia with a maximum depth of 98 feet (24-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1979-09-05. Grade methodology: LakeQuality methodology.
What Tangier Grand Lake is good for
From access and monitoring records, not editorial picks.
- Clear water13.5 ft of visibility
- Deep water98.4 ft surveyed max depth
- Big water1,940 acres
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Tangier Grand Lake
These are the measurements NSECC publishes for Tangier Grand Lake. No A–F letter applies here: see why.
Good clarity, visible to about 13.5 ft. TSI 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.1 m | Measured, not scored |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 30 m |
| Average Depth | 7.4 m |
| Surface Area | 785 ha |
Fishing Tangier Grand Lake
Nearby Lakes in Halifax
Frequently asked questions about Tangier Grand Lake
Where is Tangier Grand Lake?
- Tangier Grand 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 Tangier Grand Lake?
- Tangier Grand 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: 4.1 m visibility. Maximum depth: 98.4 ft. Surface area: 1940 acres.
Is Tangier Grand Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Tangier Grand Lake?
- Tangier Grand Lake has a maximum depth of 98.4 feet and an average depth of 24.3 feet. The lake covers 1940 acres.
Explore Tangier Grand Lake across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 1979. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Lands and Forests
Lands and Forests1 sample · 1979
Monitoring station identifiers (1)
869
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.