Torrential rains across the US Midwest led to widespread flooding. What WORD fills in all the blanks on this flood event: floodwaters from the Big (BLANK) River caused the collapse of a railroad bridge linking North (BLANK) City, South Dakota and (BLANK) City, Iowa? No injuries were reported, and the Burlington Northern Santa Fe Railroad Line said they'd rerouted trains away from the bridge prior to the flooding.
Sioux