Here is another story of what happened to a shipment that tried to pass by Cincinnati on the Ohio River, a major trade route of the time. It is from the Covington Journal of May 18, 1861, reprinted from the Maysville Express.
We learn that a shipment of bacon made by a firm in this city, to Louisville, was arrested at Cincinnati and sent back to the consignors here. Such conduct is a most unjust, illegal and illiberal interference with our commerce between our own ports and citizens. The Ohio River belongs exclusively and rightfully to Kentucky - and the transit of our products along it should be free and undisturbed.
Here is a link to a previous entry about a similar incident, along with some reaction to that first achievement