Long Lake
Richmond, Nova Scotia71 haView mapDirections
NSECC publishes the water-quality measurements for Long Lake. Here is what has been measured.
- 53 ft max depth
- Limited data
Long Lake in Richmond, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 3.6 m visibility. Maximum depth: 52.5 ft. Surface area: 175.7 acres.
Long Lake is a 176-acre lake in Richmond County, Nova Scotia with a maximum depth of 53 feet (22-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 1974-08-05. Methodology: how these readings are compared.
What Long Lake is good for
From access and monitoring records, not editorial picks.
- Clear water11.8 ft of visibility
- Deep water52.5 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether 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 Long Lake
These are the measurements NSECC publishes for 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 11.8 ft. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.6m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading 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. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Long Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
16 m
Average depth
6.6 m
Surface area
71 ha
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Fishing Long Lake
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Frequently asked questions about Long Lake
Where is Long Lake?
- 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 Long Lake?
- Long Lake in Richmond, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 3.6 m visibility. Maximum depth: 52.5 ft. Surface area: 175.7 acres.
Is Long Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Long Lake?
- Long Lake has a maximum depth of 52.5 feet and an average depth of 21.7 feet. The lake covers 175.7 acres.
Explore Long Lake across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 1974. 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 · 1989 - Lands and Forests
Lands and Forests1 sample · 1974
Monitoring station identifiers (1)
10
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.