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Water Levels Up on Ohio and Lower Mississippi Rivers

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Record-Challenging Low Levels are Forecast

AccuWeather reports a series of storms and recent thaw has driven water levels up on the Ohio and lower Mississippi rivers, but little change has occurred at St. Louis.

Record-challenging low levels are forecast at the Gateway to the West.

Several drenching storms, combined with snow melt in some areas during the recent warm spell, have pushed a few tributaries of the Ohio River to flood levels in recent days.

The Ohio River joins the Mississippi at Cairo, Ill.

Record challenging low levels

Higher Levels Downstream on Mississippi River

The runoff will translate to higher levels downstream on the Mississippi River through Memphis, Tenn., Vicksburg, Miss., and eventually New Orleans.

However, while some rivers including the Illinois have seen some modest rises levels in recent days and the level has reversed at St. Louis, it is only a short-term bump in the overall slow-fall. However, at least it is a little good news for a change.

A significant amount of barge traffic uses the Mississippi River from New Orleans to St. Louis and farther north. There is a several-hundred mile stretch of very low water levels from Cairo, Ill., to St. Louis and upstream.

Pattern of Little Precipitation to Continue

Unfortunately, the pattern of little precipitation will continue mainly from around Cairo, Ill., north and west over the next few weeks. In addition, colder air will continue to settle over the same region and significant ice formation is likely on the upper reaches of the river.

Record challenging low levels2

This means that little runoff will enter the Upper Mississippi and Missouri watersheds.

Farther south and east, there will likely continue to be more storms with more moisture. As the storms drop in from the northwest or move up from the southwest, they will grab moisture from the Gulf of Mexico and deposit it in the form of rain and in some cases snow and ice over the Tennessee and Ohio valleys, as well as the Appalachians moving forward through the rest of January and into February.

The record low water level at St. Louis is 6.2 feet and could be challenged late in January into February unless the weather pattern dramatically changes.

Periodic Precipitation Continues to Fall Over Illinois River Basin

Perhaps if periodic precipitation continues to fall over the Illinois River basin, record low levels at St. Louis could be warded off. The Illinois River joins the Mississippi just northwest of St. Louis.

Record challenging low levels3

Dredging, rocky outcrop removal and placement of artificial river bottom on behalf of the U.S. Army Corps of Engineers has maintained the narrowing shipping channel, but the rest is up to Mother Nature.

2012 AccuWeather, Inc. All rights reserved.

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