Nyorai kupfuurira kweiyi ndima - Zviitiko zvikuru zvemafashamo zvakaitika muIowa muna 1851, 1892, 1965, 1993, 2008. Mafashamo Makuru a1851 akarova Iowa yose, uye akapotsa aparadza guta reDes Moines rakanga richangotanga. "Nzizi dzeDes Moines neRaccoon dzakakwira kusvika pakakwirira zvisati zvamboitika, dzichifukidza nyika yose kumabvazuva kworwizi rwaDes Moines. Zvirimwa zvakaparadzwa chose chose, dzimba noruzhowa zvakaparadzwa". Pashure pokunge taundi reDudley raparadzwa, vakapukunyuka vakatamira kunzvimbo yakakwirira ndokuvamba Carlisle. Mafashamo emuna 1851 akaita kuti mvura yemumupata weRwizi rweIowa muIowa City neRwizi rweCedar muCedar Rapids iite seyakanga isati yambonaya kusvikira pakaitika mafashamo emuna 2008. Mafashamo omunguva pfupi muna 1892 akaparadza chikamu chikuru cheSioux City. Mafashamo a1965 akabata kumabvazuva kweIowa, kubva kuCedar Rapids kusvikira kuDubuke, namaguta aiva pedyo neMississippi akarohwa zvikuru. Mafashamo a1993
dzakapararira kumusoro kweMidwest, dzichikonzera kukuvadzwa kukuru kuCoralville neIowa City.