Francois Lake
Francois Lake, 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
Francois Lake in Francois Lake, 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: 6.4 m visibility. Phosphorus: 6.5 µg/L. Chlorophyll-a (algae): 1.4 µg/L.
- Clarity
- 6.4 m
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Why Francois 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 Francois 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.
Francois Lake is a lake in Francois Lake County, British Columbia.
Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2026-04-14. Grade methodology: LakeQuality methodology.
What Francois Lake is good for
From access and monitoring records, not editorial picks.
- Clear water21 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 Francois Lake
These are the measurements ENV publishes for Francois Lake. No A–F letter applies here: see why.
Crystal clear, you can see 21 ft down. Phosphorus 6.5 µg/L. Chlorophyll-a 1.4 µg/L. TSI 33.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.4 m | Measured, not scored |
| Phosphorus | 6.5 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 1.4 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 33 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Fishing Francois Lake
Nearby Lakes in Francois Lake
Frequently asked questions about Francois Lake
Where is Francois Lake?
- Francois Lake is a lake in Francois Lake, 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 Francois Lake?
- Francois Lake in Francois Lake, 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: 6.4 m visibility. Phosphorus: 6.5 µg/L. Chlorophyll-a (algae): 1.4 µg/L.
Is Francois Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Francois Lake across LakeQuality
More lakes in British Columbia
Other Lakes in British Columbia
Oligotrophic Lakes in British Columbia
Where this data comes from
200 measurements from 6 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-bc200 samples · 2017–2026
Monitoring station identifiers (6)
E319892E224946E271703E319894E319893E224945
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.