Okanagan Lake

OKANAGAN LAKE, 360.8 sq km, extends 128 km from northwest of VERNON to PENTICTON at its south end. Draining south via the Okanagan R toward the US border, it is the largest of a chain of lakes occupying the floor of the OKANAGAN VALLEY in the south-central Interior. The lake is a remnant of a much larger glacial sea—Penticton Lake—left behind by melting ice at the end of the Pleistocene era about 10,000 years ago (see GLACIATION). It is surrounded by clay cliffs and grassy benchlands and is...

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