Rapid City Receives Rapid Flood
June 9-10, 1972
On the afternoon of June 9th, 1972 in the Black Hills region of Rapid City, South Dakota, what seemed to be stationary thunderstorm. With 238 dead and 3047 injured, this was one of the most devastating floods in US history. In about 6 hours, 15 inches of rain fell in Nemo, South Dakota. 10 more inches of rain fell around Rapid City afterwards. In the end, the flood cost $160 million.