715 p.m. MDT
The NWS issues a flash flood warning for the northern Black Hills.

730 p.m. MDT
Mayor Don Barnett is notified of the flash flood warning; National Guard and local law enforcement called to duty.

800 p.m. MDT
Emergency operations center opens.

1010 p.m. MDT
Evacuation of the Brookdale residential area (present Fairgrounds location) begins.

1015 p.m. MDT
Rapid Creek overtops its banks.

1030 p.m. MDT
Mayor Barnett urges the evacuation of all low-lying areas.

1045 p.m. MDT
Canyon Lake Dam fails, adding to the flood waters.

JUNE 10, 1972

1215 a.m. MDT
A flood crest estimated at 50K cubic feet per second reaches downtown Rapid City.

500 a.m. MDT
Rapid Creek is once again within its banks.