Grant Lake Reservoir
Guysborough, Nova ScotiaView mapDirections
No A–F letter for this lake. The letter is scored against EPA reference conditions for a lake’s ecoregion, and those stop at the US border. Here is what has been measured.
- Limited data
Grant Lake Reservoir in Guysborough, Nova Scotia has water-quality measurements published by NSECC and no A–F letter. The letter's EPA reference conditions stop at the US border. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 1.5 µg/L.
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Why Grant Lake Reservoir has no A–F letter
The LakeQuality letter is scored against EPA National Lakes Assessment reference conditions for a lake’s ecoregion, and those stop at the US border. There is no reference condition for Nova Scotia, so the scale cannot be applied to Grant Lake Reservoir at any level of sampling. Sampling here has recorded phosphorus and algae (chlorophyll-a), but not water clarity.
This is not a gap in the monitoring record. NSECC publishes these measurements directly, and everything below that has been measured is reported on this page as NSECC reports it.
Monitoring: Nova Scotia Environment and Climate Change. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Grant Lake Reservoir
These are the measurements NSECC publishes for Grant Lake Reservoir. No A–F letter applies here: see why.
No clarity data. Phosphorus 7 µg/L. Chlorophyll-a 1.5 µg/L. TSI 33.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 7 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 1.5 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 33 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Fishing Grant Lake Reservoir
Nearby Lakes in Guysborough
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 it carries no A–F letter, because no reference condition exists for lakes in this region, so the assessment thresholds behind the A–F scale cannot be applied here.
What is the water quality grade for Grant Lake Reservoir?
- Grant Lake Reservoir in Guysborough, Nova Scotia has water-quality measurements published by NSECC and no A–F letter. The letter's EPA reference conditions stop at the US border. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 1.5 µg/L.
Is Grant Lake Reservoir safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Grant Lake Reservoir across LakeQuality
More lakes in Nova Scotia
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Oligotrophic Lakes in Nova Scotia
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, and without a LakeQuality A–F letter. The letter is scored against EPA reference conditions for a lake’s ecoregion, and the EPA does not survey these lakes. See how grades are calculated and data sources.