Where is Okanagan Lake?

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

Okanagan Lake

Okanagan River, British ColumbiaView map Directions

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

Clarity

5.9 m

Typical for British Columbia

Secchi · sampled 2026

Phosphorus

5.9 µg/L

Typical for British Columbia

Measured by ENV

Chlorophyll-a

2.1 µg/L

Typical for British Columbia

Measured by ENV

Limited data

See the measurements Directions Where to stay

Okanagan Lake in Okanagan River, British Columbia has water-quality measurements published by ENV, shown here as reported. Water clarity: 5.9 m visibility. Phosphorus: 5.9 µg/L. Chlorophyll-a (algae): 2.1 µg/L.

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Okanagan Lake is a lake in Okanagan River County, British Columbia.

Source: the British Columbia Ministry of Environment and Parks — not the EPA Water Quality Portal, last sampled 2026-08-19. Methodology: how these readings are compared.

What Okanagan Lake is good for

From access and monitoring records, not editorial picks.

Clear water19.3 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 Okanagan 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 Okanagan Lake

These are the measurements ENV publishes for Okanagan 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 19.3 ft down. Phosphorus 5.9 µg/L. Chlorophyll-a 2.1 µg/L. TSI 34.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	5.88m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	5.9µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	2.1µg/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.	34	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

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

Ask about Okanagan Lake

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

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Stays near Okanagan Lake

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Fishing Okanagan Lake

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

Nearby Lakes in Okanagan River

Ellison Lake0.8 m clear4.6 miView →Wood Lake3.6 m clear8.6 miView →Kalamalka Lake6.9 m clear15.8 miView →Beaver Lake13.2 miView →Skaha Lake5.6 m clear38.9 miView →Vaseaux Lake4.4 m clear—View →

Frequently asked questions about Okanagan Lake

Where is Okanagan Lake?: Okanagan Lake is a lake in Okanagan River, British Columbia. Its water-quality measurements are published by ENV and shown on this page as reported.
What is the water quality of Okanagan Lake?: Okanagan Lake in Okanagan River, British Columbia has water-quality measurements published by ENV, shown here as reported. Water clarity: 5.9 m visibility. Phosphorus: 5.9 µg/L. Chlorophyll-a (algae): 2.1 µg/L.
Is Okanagan Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.