Wisconsin’s catastrophic flooding is a glimpse of the Midwest’s drenched future

An entire summer’s worth of rain has fallen across a broad swath of the Midwest in recent days. The resulting record floods have wrecked homes and altered the paths of rivers, in one case destroying a waterfall in Minnesota. The worst-affected region, southwest Wisconsin, has received more than 20 inches of rain in 15 days– more than it usually gets in six months.Governor Scott Walker of Wisconsin declared a statewide emergency last week, mobilizing the Wisconsin National Guard to assist flood victims if necessary. The Kickapoo River in southwest Wisconsin rose to record levels — as high as six feet above the previous high water mark — producing damage that local emergency management officials described as “breathtaking.”In the tiny Wisconsin town of Gays Mills, this is the third catastrophic flood in 10 years. After floods a decade ago, about a quarter of the residents left, and the town was partially rebuilt on higher ground. But this time around is even worse — with almost every home in the town damaged.Is there a connection to climate change? Well, a warmer atmosphere can hold more water vapor, and the region’s main moisture source — the Gulf of Mexico — has reached record-warm levels in recent years, helping to spur an increase in precipitation intensity. Since the 1950s, the amount of rain falling in the heaviest storms has increased by 37 percent in the Midwest.But there’s more to it than that. Decades of development have also paved over land that used to soak up rainwater. Earlier this year, Wisconsin took controversial steps to loosen restrictions on lakeside development.