Kathlyn Lake
Bulkley 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
Kathlyn Lake in Bulkley 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: 2.7 m visibility. Phosphorus: 11.3 µg/L. Chlorophyll-a (algae): 5.1 µg/L.
- Clarity
- 2.7 m
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Why Kathlyn 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 Kathlyn 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.
Kathlyn Lake is a lake in Bulkley River County, British Columbia.
Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2025-08-21. 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 Kathlyn Lake
These are the measurements ENV publishes for Kathlyn Lake. No A–F letter applies here: see why.
Moderate clarity, visible to about 8.9 ft. Phosphorus 11.3 µg/L. Chlorophyll-a 5.1 µg/L. TSI 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.7 m | Measured, not scored |
| Phosphorus | 11.3 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | 5.1 µg/L | Measured, not scored |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Fishing Kathlyn Lake
Nearby Lakes in Bulkley River
Frequently asked questions about Kathlyn Lake
Where is Kathlyn Lake?
- Kathlyn Lake is a lake in Bulkley 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 Kathlyn Lake?
- Kathlyn Lake in Bulkley 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: 2.7 m visibility. Phosphorus: 11.3 µg/L. Chlorophyll-a (algae): 5.1 µg/L.
Is Kathlyn Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Kathlyn Lake across LakeQuality
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Mesotrophic Lakes in British Columbia
Where this data comes from
51 measurements from 1 monitoring station, 2017–2025. 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-bc51 samples · 2017–2025
Monitoring station identifiers (1)
1131007
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.