Where is Trefry Lake?

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

How deep is Trefry Lake?

Trefry Lake has a maximum depth of 46.6 feet. The lake covers 67 acres.

Trefry Lake

Yarmouth, Nova Scotia27 haView map Directions

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

Clarity

3.2 m

Typical for Nova Scotia

Secchi · sampled 2004

Phosphorus

10.5 µg/L

More phosphorus than most

Measured by NSECC

Chlorophyll-a

6.9 µg/L

More algae than most

Measured by NSECC

Max depth

14.2 m

Bathymetric survey

Area

27 ha

Surface area

47 ft max depth
Limited data

See the measurements Directions Where to stay

Trefry Lake in Yarmouth, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 3.2 m visibility. Phosphorus: 10.5 µg/L. Chlorophyll-a (algae): 6.9 µg/L. Maximum depth: 46.6 ft. Surface area: 67 acres.

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Trefry Lake is a 67-acre lake in Yarmouth County, Nova Scotia with a maximum depth of 47 feet.

Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 2004-07-19. Methodology: how these readings are compared.

What Trefry Lake is good for

From access and monitoring records, not editorial picks.

Clear water10.5 ft of visibility
Deep water46.6 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 Trefry 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 Trefry Lake

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

Good clarity, visible to about 10.5 ft. Phosphorus 10.5 µg/L. Chlorophyll-a 6.9 µg/L. TSI 44.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	3.2m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	10.5µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	6.9µg/L	Measured, 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.	44	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Trefry Lake

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

Lake Details

Max depth

14.2 m

Surface area

27 ha

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Fishing Trefry Lake

→ Trefry Lake fishing regulations (limits, seasons, special rules)

Nearby Lakes in Yarmouth

Porcupine Lake0.4 m clear1.1 miView →Churchills Mill Lake0.3 m clear1.9 miView →Harris Lake1.2 m clear4.6 miView →Milo Lake1.3 m clear3.9 miView →Doctor Lake0.8 m clear4.5 miView →Bunkers Lake0.4 m clear6.1 miView →

Frequently asked questions about Trefry Lake

Where is Trefry Lake?: Trefry Lake is a lake in Yarmouth, Nova Scotia. Its water-quality measurements are published by NSECC and shown on this page as reported.
What is the water quality of Trefry Lake?: Trefry Lake in Yarmouth, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 3.2 m visibility. Phosphorus: 10.5 µg/L. Chlorophyll-a (algae): 6.9 µg/L. Maximum depth: 46.6 ft. Surface area: 67 acres.
Is Trefry Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Trefry Lake?: Trefry Lake has a maximum depth of 46.6 feet. The lake covers 67 acres.