Grant Lake Reservoir
Guysborough, Nova ScotiaView mapDirections
NSECC publishes the water-quality measurements for Grant Lake Reservoir. Here is what has been measured.
- Limited data
Grant Lake Reservoir in Guysborough, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 1.5 µg/L.
Grant Lake Reservoir is a lake in Guysborough County, Nova Scotia.
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1996-07-31. 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 Grant Lake Reservoir 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 Grant Lake Reservoir
These are the measurements NSECC publishes for Grant Lake Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 7 µg/L. Chlorophyll-a 1.5 µg/L. TSI 33.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 7µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 1.5µg/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. | 33 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
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Frequently asked questions about Grant Lake Reservoir
Where is Grant Lake Reservoir?
- Grant Lake Reservoir 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 Grant Lake Reservoir?
- Grant Lake Reservoir in Guysborough, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 1.5 µg/L.
Is Grant Lake Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Grant Lake Reservoir across LakeQuality
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Where this data comes from
2 measurements from 1 monitoring station, 1996. 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 · 1996
Monitoring station identifiers (1)
21
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.