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LakeQuality

Blacketts Lake

Cape Breton, Nova Scotia172 haView mapDirections

NSECC publishes the water-quality measurements for Blacketts Lake. Here is what has been measured.

Clarity
4.6 m
Clearer than most
Secchi · sampled 2018
Phosphorus
3.5 µg/L
Typical for Nova Scotia
Measured by NSECC
Chlorophyll-a
2.4 µg/L
Typical for Nova Scotia
Measured by NSECC
Max depth
30 m
Bathymetric survey
Area
172 ha
Surface area
  • 98 ft max depth
  • Limited data

Blacketts Lake in Cape Breton, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 4.6 m visibility. Phosphorus: 3.5 µg/L. Chlorophyll-a (algae): 2.4 µg/L. Maximum depth: 98.4 ft. Surface area: 425 acres.

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Blacketts Lake is a 425-acre lake in Cape Breton County, Nova Scotia with a maximum depth of 98 feet (31-foot average).

Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 2018-07-24. Methodology: how these readings are compared.

What Blacketts Lake is good for

From access and monitoring records, not editorial picks.

  • Clear water15.1 ft of visibility
  • Deep water98.4 ft surveyed max depth

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Blacketts Lake is safe to swim in today is a call for Nova Scotia Environment and Climate Change and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Blacketts Lake

These are the measurements NSECC publishes for Blacketts Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

Crystal clear, you can see 15.1 ft down. Phosphorus 3.5 µg/L. Chlorophyll-a 2.4 µg/L. TSI 33.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)4.6mMeasured, not scored

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus3.5µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)2.4µg/LMeasured, not scored

The green pigment in algae — a direct measure of how much algae is in the water.

Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.33Oligotrophic
OligotrophicMesotrophicEutrophicHypereutrophic

Low nutrients, clear water. No reading is a swimming clearance.

Ask about Blacketts Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

30 m

Average depth

9.5 m

Surface area

172 ha

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Nearby Lakes in Cape Breton

Frequently asked questions about Blacketts Lake

Where is Blacketts Lake?

Blacketts Lake is a lake in Cape Breton, Nova Scotia. Its water-quality measurements are published by NSECC and shown on this page as reported.

What is the water quality of Blacketts Lake?

Blacketts Lake in Cape Breton, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 4.6 m visibility. Phosphorus: 3.5 µg/L. Chlorophyll-a (algae): 2.4 µg/L. Maximum depth: 98.4 ft. Surface area: 425 acres.

Measurements on this page ↑

Is Blacketts Lake safe to swim in?

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Swimming on this page ↑

How deep is Blacketts Lake?

Blacketts Lake has a maximum depth of 98.4 feet and an average depth of 31.2 feet. The lake covers 425 acres.

Oligotrophic Lakes in Nova Scotia

Where this data comes from

7 measurements from 1 monitoring station, 1975–2018. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

  • NS Department of Fisheries & AquacultureNS Department of Fisheries & Aquaculture2 samples · 2013–2018
  • NS Dept. of FisheriesNS Dept. of Fisheries2 samples · 1989–2000
  • DFODFO1 sample · 1975
Monitoring station identifiers (1)
  • 2

Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.