Somenos Lake
Cowichan, British ColumbiaView mapDirections
ENV publishes the water-quality measurements for Somenos Lake. Here is what has been measured.
- Limited data
Somenos Lake in Cowichan, British Columbia has water-quality measurements published by ENV, shown here as reported. Phosphorus: 105.5 µg/L.
Somenos Lake is a lake in Cowichan County, British Columbia.
Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2025-11-04. 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 Somenos Lake is safe to swim in today is a call for the British Columbia Ministry of Environment and Parks and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Somenos Lake
These are the measurements ENV publishes for Somenos Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 105.5 µg/L. TSI 71.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 106µg/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. | 71 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Somenos Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Somenos Lake
Compare lakeside cabins, hotels, and vacation rentals near Somenos Lake in Cowichan, British Columbia — 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 Somenos Lake
Prices for Oct 23–25, 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 Somenos Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Somenos Lake
Nearby Lakes in Cowichan
Frequently asked questions about Somenos Lake
Where is Somenos Lake?
- Somenos Lake is a lake in Cowichan, British Columbia. Its water-quality measurements are published by ENV and shown on this page as reported.
What is the water quality of Somenos Lake?
- Somenos Lake in Cowichan, British Columbia has water-quality measurements published by ENV, shown here as reported. Phosphorus: 105.5 µg/L.
Is Somenos Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Somenos Lake across LakeQuality
More lakes in British Columbia
Other Lakes in British Columbia
Where this data comes from
10 measurements from 1 monitoring station, 2024–2025. Retrieved from British Columbia EnMoDS (not the EPA Water Quality Portal) on 2026-09-06.
Collected and reported by
- British Columbia Ministry of Environment and Parks
enmods-bc10 samples · 2024–2025
Monitoring station identifiers (1)
E243577
Canadian lakes are published with the measurements their provincial programme reports. See where the data comes from and data sources.