December 5, 1830. During the year 1831 406 steamboats, 46 keel-boats, and 357 flat-boats, measuring 76,323 tons, passed through the locks.[1]
The venture was highly successful from a financial point of view thanks to outrageous tolls that were charged. A twenty-four thousand dollar boat of three hundred tons running between Cincinnati and St. Louis expended in tolls in the Louisville and Portland Canal in five years a sum equal to her entire cost. "A boat of one hundred and ninety tons, owned at Cincinnati, has been in the habit of making her trips from this city to St. Louis and back, in two weeks, and has passed the canal four times in one month. Her toll, each trip, at $60 per ton, was $114, and her toll for one month was $456, or at the rate of $5,472 per year, which is nearly half the value of such a boat."[2]
From 1831 to 1843, 13,756 steamboats passed through the Canal, and 4,701 keel-
