Over the last five decades, the types of deluges that washed out towns in Iowa, forced the Army Corps of Engineers to intentionally blow up levees to save Cairo, Illinois, and sent the Missouri River over its banks for hundreds of miles, have been increasing, according to analysis by the Rocky Mountain Climate Organization (RMCO) and the Natural Resources Defense Council (NRDC).
Big storms, leading to big floods, are occurring with increasing frequency in the Midwest, with incidences of the most severe downpours doubling over the last half century. The report's lead author, Stephen Saunders, explained that "a threshold may have been crossed":
"Global studies already show that human-caused climate change is driving more extreme precipitation, and now we've documented how great the increase has been in the Midwest and linked the extreme storms to flooding in the region.
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