USACE Forecast Could Result in Earlier Then Expected Effective Closure of Mississippi River

Waterways Council Release
26  December 2012

Late Christmas Eve, the U.S. Army Corps of Engineers advised industry of the most current 28-day weather and water forecast for the Mississippi River area near Thebes, Illinois, south of St. Louis, where rock pinnacle removal work is taking place.  The forecast suggests that commerce on the Mississippi River could come to an effective halt earlier than expected in the New Year, around January 3 or 4.  Earlier forecasts had suggested that the congressionally authorized nine-foot navigation channel could remain in operation until perhaps the middle of January.

The latest forecast calls for the Mississippi River gauge at Thebes to be at 3 feet on or around January 3-4, with vessel drafts limited to 8 feet. The forecast for the river gauge to fall to 2 feet will be on or around January 12-13, allowing only a 7-foot maximum vessel draft. It is estimated that the river will reach a reading of 1 foot on or around January 19, which equates to 6 feet of navigable depth.  The majority of towboats require a 9-foot draft to operate and only a very small number of towing vessels can operate at 8-or 7-foot drafts.

Stakeholders continue to urge the Administration to release a minimal amount of water from the Missouri River reservoirs (4,000 cfs or 1% of current storage in the reservoir system) to avert this effective shutdown of the Mississippi River to barge transportation. While the Corps and the Coast Guard have said that they have no plans to close the river, this latest forecast and falling water levels will preclude navigation because towboats will be unable to transit the “bottleneck reach” between St. Louis and Cairo, Illinois.

WCI and AWO leaders met last week with White House staff and other senior Administration officials, and continue to implore them and Members of Congress and the Corps to release additional water to sustain navigation on the Mississippi River, including utilization of Missouri River storage.  Discussions continue and we will keep you informed as developments occur.