Hart Lake
Colchester, Nova Scotia39 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.
- 75 ft max depth
- Limited data
Hart Lake in Colchester, 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: 5.8 m visibility. Phosphorus: 2 µg/L. Maximum depth: 75 ft. Surface area: 97.6 acres.
- Clarity
- 5.8 m
- Max depth
- 22.9 m
- Area
- 39 ha
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Why Hart 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 Hart Lake at any level of sampling. Sampling here has recorded water clarity and phosphorus, but not 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.
Hart Lake is a 98-acre lake in Colchester County, Nova Scotia with a maximum depth of 75 feet (26-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1982-08-12. Grade methodology: LakeQuality methodology.
What Hart Lake is good for
From access and monitoring records, not editorial picks.
- Clear water19 ft of visibility
- Deep water75 ft surveyed max depth
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Hart Lake
These are the measurements NSECC publishes for Hart Lake. No A–F letter applies here: see why.
Crystal clear, you can see 19 ft down. Phosphorus 2 µg/L. TSI 24.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.8 m | Measured, not scored |
| Phosphorus | 2 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 24 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 22.9 m |
| Average Depth | 7.9 m |
| Surface Area | 39 ha |
Fishing Hart Lake
Nearby Lakes in Colchester
Frequently asked questions about Hart Lake
Where is Hart Lake?
- Hart Lake is a lake in Colchester, 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 Hart Lake?
- Hart Lake in Colchester, 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: 5.8 m visibility. Phosphorus: 2 µg/L. Maximum depth: 75 ft. Surface area: 97.6 acres.
Is Hart Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Hart Lake?
- Hart Lake has a maximum depth of 75 feet and an average depth of 25.9 feet. The lake covers 97.6 acres.
Explore Hart Lake across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 1973–1982. 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 · 1990 - Lands and Forests, NSDOE
Lands and Forests, NSDOE1 sample · 1982 - Lands and Forests
Lands and Forests1 sample · 1973
Monitoring station identifiers (1)
17
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.