Buckhorn Lake in Olympic Peninsula Posted Wednesday at 06:03 PM That is interesting. Caltopo has a daily satellite imagery... you could try tracking it. I wonder if receding snow/galciers have exacerbated the yearly shrinkage. It is weird they call it glacial fed given your pictures and google map though. I would assume a glacial fed lake would have the characteristic suspended sediment. I also wonder if a geologic shift has opened up more water flow to escape beneath the ground. Any earthquakes since that google imagery?