WEST ALTON, Mo. — Devastating flooding, driven in part by climate change, is taking an especially damaging toll on communities that once thrived along the banks of America's most storied river.
Flooding has pushed people out of their homes near the Mississippi River at a roughly 30% higher rate than the U.S. as a whole, according to data provided exclusively to The Associated Press by the risk analysis firm First Street. In regions growing slower than many other parts of the country, where towns are struggling with job loss and fewer resources, flooding is accelerating the exodus.
Consider West Alton, Missouri, on a bend of the Mississippi near its meeting with the Missouri River. It had 3,900 people in 1970, Mayor Willie Richter said. That number nosedived to about 570 after big floods in 1973 and 1993. Now, after the 2019 flood, about 360 people remain. All three churches closed. Many of the remaining homes have been raised to keep safe from floodwaters.
The toll weighs on people. When officials this year arrived at a blaze consuming a small home abandoned after the 2019 flood, the suspect said he ''burned the house down because he got tired of looking at it," according to a police report.
Vacant properties invite arson, said Richter, who said four or five abandoned homes have burned since that last big flood.
''People just walk away from them,'' Richter said. ''The houses are condemned, they either got to be torn down or elevated. This much time has passed, there's a lot of damage.''
The data from First Street show that while West Alton is an extreme example of flooding's effect, it's emblematic of challenges faced by smaller communities in the Midwest and South. Many struggle to keep young people and jobs from leaving. Industries and economic forces that once spread wealth along the river have consolidated and shifted away.
In a peer-reviewed paper published in December, First Street found that flooding drove millions of people in the U.S. from their homes, using modeling that relied on analysis of block-level Census data, flood risk information and other factors. For this story, First Street provided additional data on communities within roughly 100 miles of the Mississippi River from 2000 to 2020. The AP analyzed the data and mapped it to find and report on hard-hit communities.