L'Ardoise Long Lake
Richmond, Nova Scotia31 haView mapDirections
NSECC publishes the water-quality measurements for L'Ardoise Long Lake. Here is what has been measured.
- 30 ft max depth
- Limited data
L'Ardoise Long Lake in Richmond, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 3.1 m visibility. Phosphorus: 2 µg/L. Maximum depth: 29.5 ft. Surface area: 77.6 acres.
L'Ardoise Long Lake is a 78-acre lake in Richmond County, Nova Scotia with a maximum depth of 30 feet (8-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1984-08-08. Methodology: how these readings are compared.
What L'Ardoise Long Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether L'Ardoise Long Lake is safe to swim in today is a call for Nova Scotia Environment and Climate Change and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for L'Ardoise Long Lake
These are the measurements NSECC publishes for L'Ardoise Long Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 10 ft. Phosphorus 2 µg/L. TSI 29.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.05m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 2µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 29 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about L'Ardoise Long Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
9 m
Average depth
2.4 m
Surface area
31 ha
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Frequently asked questions about L'Ardoise Long Lake
Where is L'Ardoise Long Lake?
- L'Ardoise Long Lake is a lake in Richmond, Nova Scotia. Its water-quality measurements are published by NSECC and shown on this page as reported.
What is the water quality of L'Ardoise Long Lake?
- L'Ardoise Long Lake in Richmond, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 3.1 m visibility. Phosphorus: 2 µg/L. Maximum depth: 29.5 ft. Surface area: 77.6 acres.
Is L'Ardoise Long Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is L'Ardoise Long Lake?
- L'Ardoise Long Lake has a maximum depth of 29.5 feet and an average depth of 7.9 feet. The lake covers 77.6 acres.
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Where this data comes from
2 measurements from 1 monitoring station, 1984. 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 · 1984
Monitoring station identifiers (1)
13
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.