Seven Mile Lake
Lunenburg, Nova Scotia291 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.
- 59 ft max depth
- Limited data
Seven Mile Lake in Lunenburg, 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: 2.6 m visibility. Phosphorus: 5 µg/L. Maximum depth: 59.1 ft. Surface area: 719.1 acres.
- Clarity
- 2.6 m
- Max depth
- 18 m
- Area
- 291 ha
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Why Seven Mile 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 Seven Mile 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.
Seven Mile Lake is a 719-acre lake in Lunenburg County, Nova Scotia with a maximum depth of 59 feet (19-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 2007-11-22. Grade methodology: LakeQuality methodology.
What Seven Mile Lake is good for
From access and monitoring records, not editorial picks.
- Deep water59.1 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 Seven Mile Lake
These are the measurements NSECC publishes for Seven Mile Lake. No A–F letter applies here: see why.
Moderate clarity, visible to about 8.5 ft. Phosphorus 5 µg/L. TSI 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.6 m | Measured, not scored |
| Phosphorus | 5 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 18 m |
| Average Depth | 5.8 m |
| Surface Area | 291 ha |
Fishing Seven Mile Lake
Nearby Lakes in Lunenburg
Frequently asked questions about Seven Mile Lake
Where is Seven Mile Lake?
- Seven Mile Lake is a lake in Lunenburg, 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 Seven Mile Lake?
- Seven Mile Lake in Lunenburg, 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: 2.6 m visibility. Phosphorus: 5 µg/L. Maximum depth: 59.1 ft. Surface area: 719.1 acres.
Is Seven Mile Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Seven Mile Lake?
- Seven Mile Lake has a maximum depth of 59.1 feet and an average depth of 19 feet. The lake covers 719.1 acres.
Explore Seven Mile Lake across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 1984–2007. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- NSDFA
NSDFA1 sample · 2007 - Lands and Forests, NSDOE
Lands and Forests, NSDOE1 sample · 1984
Monitoring station identifiers (1)
957
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.