Alma Lake
Annapolis, Nova Scotia277 haView mapDirections
NSECC publishes the water-quality measurements for Alma Lake. Here is what has been measured.
- 26 ft max depth
- Limited data
Alma Lake in Annapolis, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 1.8 m visibility. Phosphorus: 6 µg/L. Chlorophyll-a (algae): 4 µg/L. Maximum depth: 26.2 ft. Surface area: 683.7 acres.
Alma Lake is a 684-acre lake in Annapolis County, Nova Scotia with a maximum depth of 26 feet (11-foot average).
Source: Nova Scotia Environment and Climate Change — not the EPA Water Quality Portal, last sampled 2016-07-07. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Alma 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 Alma Lake
These are the measurements NSECC publishes for Alma Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5.7 ft. Phosphorus 6 µg/L. Chlorophyll-a 4 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.75m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 6µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 4µg/L | Measured, not scored 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
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
8 m
Average depth
3.3 m
Surface area
277 ha
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Frequently asked questions about Alma Lake
Where is Alma Lake?
- Alma Lake is a lake in Annapolis, Nova Scotia. Its water-quality measurements are published by NSECC and shown on this page as reported.
What is the water quality of Alma Lake?
- Alma Lake in Annapolis, Nova Scotia has water-quality measurements published by NSECC, shown here as reported. Water clarity: 1.8 m visibility. Phosphorus: 6 µg/L. Chlorophyll-a (algae): 4 µg/L. Maximum depth: 26.2 ft. Surface area: 683.7 acres.
Is Alma Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Alma Lake?
- Alma Lake has a maximum depth of 26.2 feet and an average depth of 10.8 feet. The lake covers 683.7 acres.
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Where this data comes from
4 measurements from 1 monitoring station, 1984–2016. 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 · 2016 - Lands and Forests, NSDOE
Lands and Forests, NSDOE1 sample · 1984
Monitoring station identifiers (1)
6
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.