[7] Major inflows include Mission, Vernon, Trout, Penticton, Equesis, Kelowna, Peachland and Powers Creeks.

The lake's maximum depth is 232 metres (761 ft) near Grant Island (Nahun Weenox).

Some areas of the lake have up to 750 metres (2,460 ft) of glacial and post-glacial sediment fill which were deposited during the Pleistocene Epoch.

[9] Many parks and beaches are found along the shores of the lake, which make boating and swimming very popular activities.

It is said by some to be home to its own lake monster – a giant serpent-like creature named Ogopogo.