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LakeQuality

Dunn Lake

Queens, Nova Scotia22 haView mapDirections

NR
Not rated

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.

Water temp
No reading
No gauge
Clarity
3.9 m
Secchi · sampled 1984
Level
No reading
No gauge
Trend
No reading
Not enough history
  • 20 ft max depth
  • Limited data

Dunn Lake in Queens, 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: 3.9 m visibility. Phosphorus: 4 µg/L. Maximum depth: 19.7 ft. Surface area: 54.1 acres.

Clarity
3.9 m
Max depth
6 m
Area
22 ha
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Why Dunn 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 Dunn 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.

Dunn Lake is a 54-acre lake in Queens County, Nova Scotia with a maximum depth of 20 feet (6-foot average).

Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1984-06-06. Grade methodology: LakeQuality methodology.

What Dunn Lake is good for

From access and monitoring records, not editorial picks.

  • Clear water12.7 ft of visibility

Swimming Safety

Not rated

Limited data

The letter is not a swimming clearance. Check local advisories before you swim.

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Water quality measurements for Dunn Lake

These are the measurements NSECC publishes for Dunn Lake. No A–F letter applies here: see why.

Good clarity, visible to about 12.7 ft. Phosphorus 4 µg/L. TSI 32.

MetricValueGrade
Water Clarity (Secchi Depth)3.86 mMeasured, not scored
Phosphorus4 µg/LMeasured, not scored
Chlorophyll-a (Algae)No recent samples
Trophic State Index (TSI)32Oligotrophic

Low nutrients, clear water. The letter is not a swimming clearance.

Lake Details

CharacteristicValue
Maximum Depth6 m
Average Depth1.8 m
Surface Area22 ha

Fishing Dunn Lake

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Frequently asked questions about Dunn Lake

Where is Dunn Lake?

Dunn Lake is a lake in Queens, 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 Dunn Lake?

Dunn Lake in Queens, 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: 3.9 m visibility. Phosphorus: 4 µg/L. Maximum depth: 19.7 ft. Surface area: 54.1 acres.

Is Dunn Lake safe to swim in?

The letter is not a swimming clearance. Check local advisories before you swim.

How deep is Dunn Lake?

Dunn Lake has a maximum depth of 19.7 feet and an average depth of 5.9 feet. The lake covers 54.1 acres.

Where this data comes from

2 measurements from 1 monitoring station, 1964–1984. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

  • Lands and Forests, NSDOELands and Forests, NSDOE1 sample · 1984
  • Lands and ForestsLands and Forests1 sample · 1964
Monitoring station identifiers (1)
  • 984

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.