Can you answer this trivia question?

Tomorrow is the anniversary of a calamitous event that took place in 1975. A journalistic account of It inspired a song that includes references to November. That song has the tendency to remind listeners that the names we call lakes now are not the names by which they were known long ago.

What was that Nov. 10, 1975 event?

If that’s too easy for you, feel free to up the ante by sharing the original names of a few of the Inland Northwest’s bigger lakes.