Pratts Lake
Colchester, Nova Scotia8 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.
- 36 ft max depth
- Limited data
Pratts 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: 2.4 m visibility. Maximum depth: 36.1 ft. Surface area: 20 acres.
- Clarity
- 2.4 m
- Max depth
- 11 m
- Area
- 8 ha
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Why Pratts 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 Pratts 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.
Pratts Lake is a 20-acre lake in Colchester County, Nova Scotia with a maximum depth of 36 feet (11-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1995-06-19. Grade methodology: LakeQuality methodology.
What Pratts Lake is good for
From access and monitoring records, not editorial picks.
- Deep water36.1 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 Pratts Lake
These are the measurements NSECC publishes for Pratts Lake. No A–F letter applies here: see why.
Moderate clarity, visible to about 7.9 ft. TSI 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.4 m | Measured, not scored |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 11 m |
| Average Depth | 3.2 m |
| Surface Area | 8 ha |
Fishing Pratts Lake
Nearby Lakes in Colchester
Frequently asked questions about Pratts Lake
Where is Pratts Lake?
- Pratts 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 Pratts Lake?
- Pratts 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: 2.4 m visibility. Maximum depth: 36.1 ft. Surface area: 20 acres.
Is Pratts Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Pratts Lake?
- Pratts Lake has a maximum depth of 36.1 feet and an average depth of 10.5 feet. The lake covers 20 acres.
Explore Pratts Lake across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 1995. 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 · 1995
Monitoring station identifiers (1)
13
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.