Barge transit slowed across the Arkansas, Ohio and lower Mississippi rivers over the weekend because of flooding, which prompted the US Army Corps of Engineers (Corps) to close locks and issue transit restrictions along the waterways.
The Corps advised all small craft to limit or halt transit on the McClellan-Kerr Arkansas River Navigation System (MCKARNS) in Arkansas because flows reached above 200,000 cubic feet per second (cfs), nearly three times the high-water flow. The heavy flow is expected to persist throughout the week, posing risks to those transiting the river system, said the Corps. Some barges have halted movement on the river, temporarily miring fertilizer resupply efforts in Arkansas and Oklahoma in the middle of the urea application season.
The Corps forecasts high flows to continue into Friday, and the National Weather Service predicts several locations along the MCKARNS will maintain a moderate to minor flood stage into Friday as well.
Both the Arthur V Ormond Lock and the Toad Suck Ferry Lock, upriver from Little Rock, Arkansas, shut on 6 April because of the high flows. Flows along the Little Rock Corps district reached 271,600cfs on 7 April. The Corps forecasts high flows to continue into Friday.
Ohio and lower Mississippi rivers
The Corps restricted barge transit between Cincinnati, Ohio, and Cairo, Illinois, on the Ohio River to mitigate barge transportation risks, with the Corps closing two locks on the Ohio River on 6 April and potentially four more in the coming days.
Major barge carrier American Commercial Barge Line (ACBL) anticipates dock and fleeting operations will be suspended at certain locations along the Mississippi and Ohio rivers as a result of the flooding. NWS forecasters anticipate major flooding levels to persist through the following week. Barge carriers also expect a backlog of up to two weeks in the region.
To alleviate flooding at Cairo, Illinois, where the Ohio and Mississippi Rivers meet, the Corps increased water releases at the Barkley Dam on the Cumberland River and the Kentucky Dam on the Tennessee River.
The Markland Lock, downriver from Cincinnati, Ohio, and the Newburgh lock near Owensboro, Kentucky, closed on 6 April. The Corps expects the full closure to remain until each location reaches its crest of nearly 57ft, which could occur on 8 or 9 April, according to the National Weather Service (NWS). Around 50 vessels or more are waiting to transit each lock, according to the Lock Status Report published by the Corps on 7 April.
The Corps also shut a chamber at both Cannelton and McAlpine locks. The John T Myers and Smithland locks may close on 7 April as well, the Corps said. The Olmsted Lock, the final lock before the Ohio and Mississippi rivers, will require a 3mph limit for any traffic passing through.
The NWS expects roughly 10-15 inches of precipitation fell along the Ohio and Mississippi River valleys earlier this month, inducing severe flooding across the Ohio and Mississippi River valleys. A preliminary estimate from AccuWeather stated an estimated loss of $80-90bn in damages from the extreme flooding.
