From St. Louis to just north of Sioux City, the Missouri River is now closed to all commercial and recreational vessels. The US Coast Guard says the closure is due to existing hazards such as drift and high water. Boats may cause damage to or overtopping of levees. The closure will remain in effect until water levels decrease to a safe condition.
Vessels being used for flood mitigation or restoration and fortification of levees may continue to operate, but minimize their wake to the greatest extent possible.