We were in the midst of moving when that happened so I don't really remember it...do remember the Thompson Canyon flash flood in Colorado a little later that summer. Fortunately, with the Teton Dam failure, the folks downstream had a little notice but, from the looks of the photos, it was a melluva' hess.
The Teton failure had the advantage of large agricultural areas downstream, so the flood had area to dissapate. It still totally wiped out a couple of farming towns.
Now, I live not far from where the San Francisquito dam failed in the '20s. A failure in a similar area today would kill thousands.