Slocan Lake
Slocan River, British ColumbiaView 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.
- Limited data
Slocan Lake in Slocan River, British Columbia has water-quality measurements published by ENV and no A–F letter. The letter's EPA reference conditions stop at the US border. Water clarity: 16.3 m visibility. Phosphorus: 2.9 µg/L. Chlorophyll-a (algae): 0.5 µg/L.
- Clarity
- 16.3 m
Stays via Stay22
Stays near Slocan Lake
Compare lakeside cabins, hotels, and vacation rentals near Slocan Lake in Slocan River, 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 Slocan Lake
Prices for Sep 11–13, 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 Slocan Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Why Slocan 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 British Columbia, so the scale cannot be applied to Slocan 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. ENV publishes these measurements directly, and everything below that has been measured is reported on this page as ENV reports it.
Monitoring: the British Columbia Ministry of Environment and Parks. Read the full grading methodology.
Slocan Lake is a lake in Slocan River County, British Columbia.
Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2026-04-01. Grade methodology: LakeQuality methodology.
What Slocan Lake is good for
From access and monitoring records, not editorial picks.
- Clear water53.5 ft of visibility
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Slocan Lake
These are the measurements ENV publishes for Slocan Lake. No A–F letter applies here: see why.
Crystal clear, you can see 53.5 ft down. Phosphorus 2.9 µg/L. Chlorophyll-a 0.5 µg/L. TSI 21.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.3 m | Measured, not scored |
| Phosphorus | 2.9 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 0.5 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 21 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Fishing Slocan Lake
Nearby Lakes in Slocan River
Frequently asked questions about Slocan Lake
Where is Slocan Lake?
- Slocan Lake is a lake in Slocan River, British Columbia. Its water-quality measurements are published by ENV, 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 Slocan Lake?
- Slocan Lake in Slocan River, British Columbia has water-quality measurements published by ENV and no A–F letter. The letter's EPA reference conditions stop at the US border. Water clarity: 16.3 m visibility. Phosphorus: 2.9 µg/L. Chlorophyll-a (algae): 0.5 µg/L.
Is Slocan Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Slocan Lake across LakeQuality
More lakes in British Columbia
Other Lakes in British Columbia
Oligotrophic Lakes in British Columbia
Where this data comes from
86 measurements from 2 monitoring stations, 2017–2026. 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-bc86 samples · 2017–2026
Monitoring station identifiers (2)
11302191130218
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.