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Three Mississippi River locks may close due to flood

Flooding on the Mississippi River is likely to close three locks on the grain shipping waterway from southern Iowa to northern Missouri later this week, the U.S. Army Corps of Engineers said on Monday, Sept. 26.Closure of lock 17 near New Boston,...

mississippiriverlockanddamnumber3.jpg
Wikipedia photo of a lock and dam on the Mississippi River.
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Flooding on the Mississippi River is likely to close three locks on the grain shipping waterway from southern Iowa to northern Missouri later this week, the U.S. Army Corps of Engineers said on Monday, Sept. 26.

Closure of lock 17 near New Boston, Illinois; lock 18 near Gladstone, Illinois; and lock 20 near Canton, Missouri, would effectively halt barge shipping through the area and could last two or three days, said Allen Marshall, spokesman for the Army Corps' Rock Island District, citing National Weather Service river level forecasts.

Excessive rains last week in northern Iowa, southern Minnesota and western Wisconsin have swamped farmland in the northern Midwest and raised concerns about damage to corn and soybean crops ahead of the autumn harvest.

The flood-swollen Mississippi is forecast to crest at 18.3 feet at New Boston on Saturday, Sept. 24, according to the National Weather Service forecast, which takes into account past precipitation along with rain expected over the next two days.

Barge shippers have been instructed to use extra caution in flooded areas due to stronger currents.

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Grain volumes shipped through the affected area normally increase later in the fall as newly harvested crops are moved downriver to export terminals along the Gulf Coast, where some 60 percent of all U.S. crop exports exit the country.

In the week ended Sept. 24, barges hauling about 117,000 tons of corn, soybeans, wheat and other grain passed through Mississippi River lock 15 just upriver from the affected locks, according to Army Corps data.

That was up from the 36,000 tons that moved through the lock a year ago but below the 200,000 to 300,000 tons a week that typically transit the area in October and November, government data showed.

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