Although several minor tornadoes have occurred , no devastating tornado has ever touched down in Davenport . Flooding , however , is often a problem in Davenport due to the lack of a flood wall . During the Great Flood of 1993 , the water crested at on July 9 . This is nearly above the flood stage . Major flooding in Davenport causes many problems . Roads in and around the downtown area , including U.S. Route 67 , are closed and cause increased traffic on other city roads . The effects of major flooding can be long-lasting . For example , during the 2008 flooding , Credit Island in the city 's southwest corner remained closed for 5 ½ months while crews worked on cleaning up damage and removing river debris . Duck Creek , a stream situated in Bettendorf and Davenport , is also vulnerable to flash flooding . Severe thunderstorms on June 16 , 1990 , created heavy flash flooding in Bettendorf and Davenport that killed four people . Another major flood happened on June 12 , 2008 , when severe thunderstorms caused Duck Creek to overflow its banks and flood properties and nearby streets ( see Iowa flood of 2008 )
Iowa flood of 2008
Iowa flood of 2008
Davenport, Iowa