Rocky Lake
Halifax, Nova Scotia142 haView mapDirections
NSECC publishes the water-quality measurements for Rocky Lake. Here is what has been measured.
- 36 ft max depth
- Limited data
Rocky Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 5.8 m visibility. Phosphorus: 2.5 µg/L. Chlorophyll-a (algae): 0.8 µg/L. Maximum depth: 36.1 ft. Surface area: 349.9 acres.
Rocky Lake is a 350-acre lake in Halifax County, Nova Scotia with a maximum depth of 36 feet (7-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1990-10-17. Methodology: how these readings are compared.
What Rocky Lake is good for
From access and monitoring records, not editorial picks.
- Clear water19 ft of visibility
- Deep water36.1 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Rocky 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 Rocky Lake
These are the measurements NSECC publishes for Rocky 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 19 ft down. Phosphorus 2.5 µg/L. Chlorophyll-a 0.8 µg/L. TSI 27.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.8m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 2.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 0.8µg/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. | 27 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Rocky Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
11 m
Average depth
2.2 m
Surface area
142 ha
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Fishing Rocky Lake
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Frequently asked questions about Rocky Lake
Where is Rocky Lake?
- Rocky 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 Rocky Lake?
- Rocky Lake in Halifax, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 5.8 m visibility. Phosphorus: 2.5 µg/L. Chlorophyll-a (algae): 0.8 µg/L. Maximum depth: 36.1 ft. Surface area: 349.9 acres.
Is Rocky Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Rocky Lake?
- Rocky Lake has a maximum depth of 36.1 feet and an average depth of 7.2 feet. The lake covers 349.9 acres.
Explore Rocky Lake across LakeQuality
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Where this data comes from
12 measurements from 2 monitoring stations, 1971–1990. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Soil and Water Conservation Society of Metro
Soil and Water Conservation Society of Metro2 samples · 1990 - NS Dept. of Fisheries
NS Dept. of Fisheries1 sample · 1992 - Lands and Forests, NSDOE
Lands and Forests, NSDOE1 sample · 1984 - Nova Scotia Environment and Climate Change
Nova Scotia Environment and Climate Change1 sample · 1984 - Environment Canada- Shubenacadie Headwaters Enviro
Environment Canada- Shubenacadie Headwaters Enviro1 sample · 1974 - Submitting organization not recorded for these samples1 sample · 1971
Some records reached the portal without a submitting organization. Those samples are counted above but not attributed.
Monitoring station identifiers (2)
66885
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.