Mississippi River flooding caused $20 billion in damage in 2019, according to a report from the National Oceanic and Atmospheric Administration (NOAA).
As for 2020, forecasters say it’s too early to predict how the flood season will compare.
The $20 billion figure includes damage to public and private property, plus losses to crops and livestock, for the entire Mississippi River and its tributaries.
Last year, the damage was caused not only by the height of flood waters, but also the duration of them. Many locations along the river were at or above flood stage for nine months.
In Louisiana, the seafood industry suffered the most damage in 2019. The influx of fresh water from the river jolted the Gulf ecosystem and decimated species like oysters and shrimp.
The flooding last year was historic in many ways, but not isolated. Mayors up and down the Mississippi River are concerned about the increased frequency of flood events.
“There is definitely an upward trend we can chart over the last few years,” Bob Gallagher, Mayor of Bettendorf, Iowa said on a call with reporters Thursday.
Gallagher is co-chair of the Mississippi River Cities and Towns Initiative, a group that advocates for the needs of cities and towns within the Mississippi River drainage basin.
“The spatial scale and duration of the 2019 Central U.S. flooding set many records," he said. "According to the U.S. National Oceanic and Atmospheric Administration, it's plausible to expect this trend to be more frequent, with damaging riverine and urban floods to continue.”
So far this spring, the river levels are high once again, though not quite as high as the same time last year. According to Jeff Graschel, a forecaster with the Lower Mississippi River Forecast Center, it may be too early to say how 2020’s flood season will shake out.
“It is very early in the season still,” Graschel said. “And we still could get heavier rainfall that could occur up in the Ohio Valley or Missouri Valley that could get us back to those levels we had in 2019.”
Last year, the Bonnet Carre Spillway was opened twice — first in February, then again in May — to relieve pressure on the flooding Mississippi. Though the river is near the trigger point for operating it, the Army Corps of Engineers does not currently plan to do so.
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