Crater Lake

From its formation over 7,000 years ago until 1888, there were no fish in Crater Lake. Without inlets or outlets, the lake was cut off from naturally acquiring a fish population. But from 1888 to 1941, the lake was stocked the with 1.8 million rainbow trout, brown trout, cutthroat trout, steelhead trout, coho salmon, and kokanee salmon. Only rainbow trout and kokanee salmon survive to this day.

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