WATCH LIVE AT 9PM: Sioux City officials holding news conference regarding potential flooding KTIV Siouxland’s News Channel1 Dead in South Dakota After Midwest Rivers Flood The New York Times‘Catastrophic flooding’ in Upper Midwest prompts evacuations as record-breaking heat wave broils the West and mid-Atlantic Yahoo! VoicesFlooding in northwest Iowa leads to 250 water rescues, hundreds of properties destroyed ABC News