Gray Lake
Halifax, Nova Scotia7 haView mapDirections
NSECC publishes the water-quality measurements for Gray Lake. Here is what has been measured.
- 30 ft max depth
- Limited data
Gray Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 1.7 m visibility. Maximum depth: 29.5 ft. Surface area: 17.8 acres.
Gray Lake is a 18-acre lake in Halifax County, Nova Scotia with a maximum depth of 30 feet (11-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1979-08-19. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Gray 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.
Water quality measurements for Gray Lake
These are the measurements NSECC publishes for Gray 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 5.5 ft. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.67m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading 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. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
9 m
Average depth
3.3 m
Surface area
7 ha
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Frequently asked questions about Gray Lake
Where is Gray Lake?
- Gray Lake is a lake in Halifax, Nova Scotia. Its water-quality measurements are published by NSECC and shown on this page as reported.
What is the water quality of Gray Lake?
- Gray Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 1.7 m visibility. Maximum depth: 29.5 ft. Surface area: 17.8 acres.
Is Gray Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Gray Lake?
- Gray Lake has a maximum depth of 29.5 feet and an average depth of 10.8 feet. The lake covers 17.8 acres.
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Where this data comes from
1 measurement from 1 monitoring station, 1979. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- NS Dept. of Fisheries
NS Dept. of Fisheries1 sample · 1993 - Lands and Forests
Lands and Forests1 sample · 1979
Monitoring station identifiers (1)
937
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.