Norman Lake
Lower Chilako 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
Norman Lake in Lower Chilako 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. Phosphorus: 18.3 µg/L. Chlorophyll-a (algae): 9.1 µg/L.
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Why Norman 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 Norman Lake at any level of sampling. Sampling here has recorded phosphorus and algae (chlorophyll-a), but not water clarity.
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.
Norman Lake is a lake in Lower Chilako River County, British Columbia.
Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2021-09-16. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Norman Lake
These are the measurements ENV publishes for Norman Lake. No A–F letter applies here: see why.
No clarity data. Phosphorus 18.3 µg/L. Chlorophyll-a 9.1 µg/L. TSI 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 18.3 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 9.1 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Fishing Norman Lake
Nearby Lakes in Lower Chilako River
Frequently asked questions about Norman Lake
Where is Norman Lake?
- Norman Lake is a lake in Lower Chilako 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 Norman Lake?
- Norman Lake in Lower Chilako 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. Phosphorus: 18.3 µg/L. Chlorophyll-a (algae): 9.1 µg/L.
Is Norman Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Norman Lake across LakeQuality
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Where this data comes from
27 measurements from 1 monitoring station, 2019–2021. 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-bc27 samples · 2019–2021
Monitoring station identifiers (1)
E206654
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.