Ainslie Lake
Inverness, Nova Scotia5,736 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.
- 59 ft max depth
- Limited data
Ainslie Lake in Inverness, 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: 3.3 m visibility. Phosphorus: 4 µg/L. Chlorophyll-a (algae): 3.8 µg/L. Maximum depth: 59.1 ft. Surface area: 14173.4 acres.
- Clarity
- 3.3 m
- Max depth
- 18 m
- Area
- 5,736 ha
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Why Ainslie 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 Ainslie Lake at any level of sampling. Sampling here has recorded water clarity, 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.
Ainslie Lake is a 14,173-acre lake in Inverness County, Nova Scotia with a maximum depth of 59 feet (19-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 2013-09-18. Grade methodology: LakeQuality methodology.
What Ainslie Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.7 ft of visibility
- Deep water59.1 ft surveyed max depth
- Big water14,173 acres
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Ainslie Lake
These are the measurements NSECC publishes for Ainslie Lake. No A–F letter applies here: see why.
Good clarity, visible to about 10.7 ft. Phosphorus 4 µg/L. Chlorophyll-a 3.8 µg/L. TSI 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.25 m | Measured, not scored |
| Phosphorus | 4 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 3.8 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 18 m |
| Average Depth | 5.7 m |
| Surface Area | 5,736 ha |
Fishing Ainslie Lake
Nearby Lakes in Inverness
Frequently asked questions about Ainslie Lake
Where is Ainslie Lake?
- Ainslie Lake is a lake in Inverness, 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 Ainslie Lake?
- Ainslie Lake in Inverness, 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: 3.3 m visibility. Phosphorus: 4 µg/L. Chlorophyll-a (algae): 3.8 µg/L. Maximum depth: 59.1 ft. Surface area: 14173.4 acres.
Is Ainslie Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Ainslie Lake?
- Ainslie Lake has a maximum depth of 59.1 feet and an average depth of 18.7 feet. The lake covers 14173.4 acres.
Explore Ainslie Lake across LakeQuality
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Where this data comes from
4 measurements from 1 monitoring station, 1978–2013. Retrieved from Nova Scotia open data (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- NS Department of Fisheries & Aquaculture
NS Department of Fisheries & Aquaculture1 sample · 2013 - NSDAF
NSDAF1 sample · 2001 - NS Dept. of Fisheries
NS Dept. of Fisheries1 sample · 1989 - Lands and Forests
Lands and Forests1 sample · 1978 - Nova Scotia Environment and Climate Change
Nova Scotia Environment and Climate Change1 sample · —
Monitoring station identifiers (1)
73
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.