A Louisiana grain terminal owned by US trader Cargill has been temporarily shut down due to damage brought on by Hurricane Ida.

The Minnesota-based company's facility in Reserve, a small city on the Mississippi River south-east of New Orleans, has completely lost power as a result of the Category 4 storm.

"Within our agriculture supply chain, our Reserve, Louisiana terminal has sustained significant damage," Cargill said in a statement.

"This area in south-east Louisiana is still facing significant personal safety concerns and power outages, so we are just able to start assessing the storm’s impact on the river system.