Where is Premier Lake?

Premier Lake is a lake in St. Mary River, British Columbia. Its water-quality measurements are published by ENV and shown on this page as reported.

Premier Lake

St. Mary River, British ColumbiaView map Directions

ENV publishes the water-quality measurements for Premier Lake. Here is what has been measured.

Clarity

10 m

Clearer than most

Secchi · sampled 2026

Phosphorus

5.6 µg/L

Typical for British Columbia

Measured by ENV

Chlorophyll-a

0.9 µg/L

Less algae than most

Measured by ENV

Limited data

See the measurements Directions Where to stay

Premier Lake in St. Mary River, British Columbia has water-quality measurements published by ENV, shown here as reported. Water clarity: 10 m visibility. Phosphorus: 5.6 µg/L. Chlorophyll-a (algae): 0.9 µg/L.

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Premier Lake is a lake in St. Mary River County, British Columbia.

Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2026-08-25. Methodology: how these readings are compared.

What Premier Lake is good for

From access and monitoring records, not editorial picks.

Clear water32.8 ft of visibility

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Premier Lake is safe to swim in today is a call for the British Columbia Ministry of Environment and Parks and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Premier Lake

These are the measurements ENV publishes for Premier Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

Crystal clear, you can see 32.8 ft down. Phosphorus 5.6 µg/L. Chlorophyll-a 0.9 µg/L. TSI 28.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	10m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	5.6µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	0.9µg/L	Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water.
Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.	28	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Low nutrients, clear water. No reading is a swimming clearance.

Ask about Premier Lake

Answers come straight from the public measurements and survey records on this page.

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Stays near Premier Lake

Compare lakeside cabins, hotels, and vacation rentals near Premier Lake in St. Mary River, British Columbia — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Premier Lake

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Fishing Premier Lake

→ Premier Lake fishing regulations (limits, seasons, special rules)

Nearby Lakes in St. Mary River

St. Mary's Lake3.4 m clear33.1 miView →Whiteswan Lake11.3 m clear15.8 miView →Columbia Lake4.3 m clear23.4 miView →Moyie Lake6 m clear—View →Windermere Lake4.3 m clear41.2 miView →Hartley Lake35.3 miView →

Frequently asked questions about Premier Lake

Where is Premier Lake?: Premier Lake is a lake in St. Mary River, British Columbia. Its water-quality measurements are published by ENV and shown on this page as reported.
What is the water quality of Premier Lake?: Premier Lake in St. Mary River, British Columbia has water-quality measurements published by ENV, shown here as reported. Water clarity: 10 m visibility. Phosphorus: 5.6 µg/L. Chlorophyll-a (algae): 0.9 µg/L.
Is Premier Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.