Columbia Lake
Columbia 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
Columbia Lake in Columbia 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: 4.3 m visibility. Phosphorus: 5.6 µg/L. Chlorophyll-a (algae): 1.3 µg/L.
- Clarity
- 4.3 m
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Why Columbia 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 Columbia 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.
Columbia Lake is a lake in Columbia River County, British Columbia.
Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2026-08-25. Grade methodology: LakeQuality methodology.
What Columbia Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14 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 Columbia Lake
These are the measurements ENV publishes for Columbia Lake. No A–F letter applies here: see why.
Good clarity, visible to about 14 ft. Phosphorus 5.6 µg/L. Chlorophyll-a 1.3 µg/L. TSI 34.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.28 m | Measured, not scored |
| Phosphorus | 5.6 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 1.3 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 34 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Fishing Columbia Lake
Nearby Lakes in Columbia River
Frequently asked questions about Columbia Lake
Where is Columbia Lake?
- Columbia Lake is a lake in Columbia 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 Columbia Lake?
- Columbia Lake in Columbia 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: 4.3 m visibility. Phosphorus: 5.6 µg/L. Chlorophyll-a (algae): 1.3 µg/L.
Is Columbia Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Columbia Lake across LakeQuality
More lakes in British Columbia
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Oligotrophic Lakes in British Columbia
Where this data comes from
56 measurements from 1 monitoring station, 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-bc56 samples · 2017–2026
Monitoring station identifiers (1)
0200434
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.