Where is Seal Harbour Big Lake?

Seal Harbour Big Lake is a lake in Guysborough, Nova Scotia. Its water-quality measurements are published by NSECC and shown on this page as reported.

How deep is Seal Harbour Big Lake?

Seal Harbour Big Lake has a maximum depth of 9.8 feet and an average depth of 5.6 feet. The lake covers 173.7 acres.

Seal Harbour Big Lake

Guysborough, Nova Scotia70 haView map Directions

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

Clarity

1.1 m

Murkier than most

Secchi · sampled 2007

Phosphorus

57.5 µg/L

More phosphorus than most

Measured by NSECC

Max depth

3 m

Bathymetric survey

Area

70 ha

Surface area

10 ft max depth
Limited data

See the measurements Directions Where to stay

Seal Harbour Big Lake in Guysborough, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 1.1 m visibility. Phosphorus: 57.5 µg/L. Maximum depth: 9.8 ft. Surface area: 173.7 acres.

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Seal Harbour Big Lake is a 174-acre lake in Guysborough County, Nova Scotia with a maximum depth of 10 feet (6-foot average).

Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 2007-10-02. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

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

Whether Seal Harbour Big 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 Seal Harbour Big Lake

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

Murky, only visible to about 3.6 ft. Phosphorus 57.5 µg/L. TSI 61.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	1.1m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	57.5µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)		No reading 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.	61	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Seal Harbour Big Lake

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

Lake Details

Max depth

3 m

Average depth

1.7 m

Surface area

70 ha

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Fishing Seal Harbour Big Lake

→ Seal Harbour Big Lake fishing regulations (limits, seasons, special rules)

Nearby Lakes in Guysborough

Ocean Lake3.3 m clear2.6 miView →Gary Lake2.2 m clear8.6 miView →Fishermans Harbour Lake0.7 m clear7.9 miView →Susie Lake3 m clear—View →Horseshoe Lake3.1 m clear8.2 miView →Cupboard Lake3.3 m clear7.9 miView →

Frequently asked questions about Seal Harbour Big Lake

Where is Seal Harbour Big Lake?: Seal Harbour Big Lake is a lake in Guysborough, Nova Scotia. Its water-quality measurements are published by NSECC and shown on this page as reported.
What is the water quality of Seal Harbour Big Lake?: Seal Harbour Big Lake in Guysborough, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 1.1 m visibility. Phosphorus: 57.5 µg/L. Maximum depth: 9.8 ft. Surface area: 173.7 acres.
Is Seal Harbour Big Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Seal Harbour Big Lake?: Seal Harbour Big Lake has a maximum depth of 9.8 feet and an average depth of 5.6 feet. The lake covers 173.7 acres.