Big Tom Wallace Lake
Digby, Nova Scotia185 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.
- 16 ft max depth
- Limited data
Big Tom Wallace Lake in Digby, 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: 1 m visibility. Phosphorus: 4 µg/L. Maximum depth: 16.4 ft. Surface area: 457.6 acres.
- Clarity
- 1 m
- Max depth
- 5 m
- Area
- 185 ha
Stays via Stay22
Stays near Big Tom Wallace Lake
Compare lakeside cabins, hotels, and vacation rentals near Big Tom Wallace Lake in Digby, Nova Scotia — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Big Tom Wallace Lake
Prices for Sep 11–13, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow Big Tom Wallace Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Why Big Tom Wallace 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 Big Tom Wallace 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.
Big Tom Wallace Lake is a 458-acre lake in Digby County, Nova Scotia with a maximum depth of 16 feet (3-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1986-07-05. 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 Big Tom Wallace Lake
These are the measurements NSECC publishes for Big Tom Wallace Lake. No A–F letter applies here: see why.
Very murky, less than 3.3 ft of visibility. Phosphorus 4 µg/L. TSI 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 m | Measured, not scored |
| Phosphorus | 4 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 5 m |
| Average Depth | 1 m |
| Surface Area | 185 ha |
Fishing Big Tom Wallace Lake
Nearby Lakes in Digby
Frequently asked questions about Big Tom Wallace Lake
Where is Big Tom Wallace Lake?
- Big Tom Wallace Lake is a lake in Digby, 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 Big Tom Wallace Lake?
- Big Tom Wallace Lake in Digby, 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: 1 m visibility. Phosphorus: 4 µg/L. Maximum depth: 16.4 ft. Surface area: 457.6 acres.
Is Big Tom Wallace Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Big Tom Wallace Lake?
- Big Tom Wallace Lake has a maximum depth of 16.4 feet and an average depth of 3.3 feet. The lake covers 457.6 acres.
Explore Big Tom Wallace Lake across LakeQuality
More lakes in Nova Scotia
Other Lakes in Nova Scotia
Mesotrophic Lakes in Nova Scotia
Where this data comes from
2 measurements from 1 monitoring station, 1986. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Lands and Forests, NSDOE
Lands and Forests, NSDOE1 sample · 1986
Monitoring station identifiers (1)
986
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.