Rapid City Flood of 1972

On the night of June 9, 1972 the Canyon Lake Dam failed & the Rapid Creek flooded sending a wave of water & debris down foam the Black Hills into Rapid City, South Dakota killing 238 people and destroying over a thousand homes.
Heavy rains in the mountains, approx 15" in 6 hours, produced the destructive wave crashing through town late at night. The river levels were back to normal early the next day.
A devastated area of Rapid City has a new life now as Memorial Park.

Rapid City Library

Wikipedia

A New City Hall

Vermillion, South Dakota, home of The University of South Dakota and The National Music Museum opened the doors to it's new city hall designed by Owen Mamura on Monday.
The new city hall is actually a city hall, too, as opposed the old retrofitted power plant the administration used to occupy. "With the old city hall, you walked in and you had a staircase right in the front of you, and a door way immediately to your right and to your left. It didn’t really say much other than you’d arrived at somebody’s back entry", the city manager explained, "There is a sense of arrival when you enter the building, and we wanted to make it easy to identify where it is they would be able to receive the services they are seeking."
A 1938 Gibson electric upright bass at the national Music Museum.

Vermillion Plain Talk article here.