Black Lake
Cumberland, Nova Scotia47 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.
- 165 ft max depth
- Limited data
Black Lake in Cumberland, 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: 5.3 m visibility. Phosphorus: 5 µg/L. Chlorophyll-a (algae): 0.7 µg/L. Maximum depth: 165 ft. Surface area: 116.6 acres.
- Clarity
- 5.3 m
- Max depth
- 50.3 m
- Area
- 47 ha
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Why Black 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 Black 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.
Black Lake is a 117-acre lake in Cumberland County, Nova Scotia with a maximum depth of 165 feet (41-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1998-08-19. Grade methodology: LakeQuality methodology.
What Black Lake is good for
From access and monitoring records, not editorial picks.
- Clear water17.2 ft of visibility
- Deep water165 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 Black Lake
These are the measurements NSECC publishes for Black Lake. No A–F letter applies here: see why.
Crystal clear, you can see 17.2 ft down. Phosphorus 5 µg/L. Chlorophyll-a 0.7 µg/L. TSI 30.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.25 m | Measured, not scored |
| Phosphorus | 5 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 0.7 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 | 50.3 m |
| Average Depth | 12.5 m |
| Surface Area | 47 ha |
Fishing Black Lake
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Frequently asked questions about Black Lake
Where is Black Lake?
- Black Lake is a lake in Cumberland, 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 Black Lake?
- Black Lake in Cumberland, 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: 5.3 m visibility. Phosphorus: 5 µg/L. Chlorophyll-a (algae): 0.7 µg/L. Maximum depth: 165 ft. Surface area: 116.6 acres.
Is Black Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Black Lake?
- Black Lake has a maximum depth of 165 feet and an average depth of 41 feet. The lake covers 116.6 acres.
Explore Black Lake across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 1998. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- NS Dept. of Fisheries
NS Dept. of Fisheries1 sample · 1998 - DOE
DOE1 sample · 1945
Monitoring station identifiers (1)
46
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.