Sproat Lake
Alberni Inlet, 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
Sproat Lake in Alberni Inlet, 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: 2.9 µg/L. Chlorophyll-a (algae): 0.3 µg/L.
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Why Sproat 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 Sproat 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.
Sproat Lake is a lake in Alberni Inlet County, British Columbia.
Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2020-11-10. 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 Sproat Lake
These are the measurements ENV publishes for Sproat Lake. No A–F letter applies here: see why.
No clarity data. Phosphorus 2.9 µg/L. Chlorophyll-a 0.3 µg/L. TSI 19.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 2.9 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 0.3 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 19 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Fishing Sproat Lake
Nearby Lakes in Alberni Inlet
Frequently asked questions about Sproat Lake
Where is Sproat Lake?
- Sproat Lake is a lake in Alberni Inlet, 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 Sproat Lake?
- Sproat Lake in Alberni Inlet, 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: 2.9 µg/L. Chlorophyll-a (algae): 0.3 µg/L.
Is Sproat Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Sproat Lake across LakeQuality
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Where this data comes from
31 measurements from 3 monitoring stations, 2019–2020. 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-bc31 samples · 2019–2020
Monitoring station identifiers (3)
E267903E267902E267905
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.