Upper Dam Lake
Pictou, Nova Scotia3 haView 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
Upper Dam Lake in Pictou, 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. Water clarity: 2.1 m visibility. Surface area: 7.2 acres.
- Clarity
- 2.1 m
- Area
- 3 ha
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Why Upper Dam Lake 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 Upper Dam Lake at any level of sampling. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
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.
Upper Dam Lake is a 7-acre lake in Pictou County, Nova Scotia.
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1975-06-19. 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 Upper Dam Lake
These are the measurements NSECC publishes for Upper Dam Lake. No A–F letter applies here: see why.
Moderate clarity, visible to about 6.9 ft. TSI 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.1 m | Measured, not scored |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 3 ha |
The available depth estimate for Upper Dam Lake is shallower than its measured water clarity, which cannot be right, so no depth is shown.
Fishing Upper Dam Lake
Nearby Lakes in Pictou
Frequently asked questions about Upper Dam Lake
Where is Upper Dam Lake?
- Upper Dam Lake is a lake in Pictou, 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 Upper Dam Lake?
- Upper Dam Lake in Pictou, 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. Water clarity: 2.1 m visibility. Surface area: 7.2 acres.
Is Upper Dam Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Upper Dam Lake?
- The available depth estimate for Upper Dam Lake is shallower than its measured water clarity, which cannot be right, so no depth is shown. The lake covers 7.2 acres.
Explore Upper Dam Lake across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 1975. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Lands and Forests
Lands and Forests1 sample · 1975
Monitoring station identifiers (1)
977
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.