In common winter and spring tides it affords fifteen feet water to Louisville, ten feet to Le Tarte's rapids, forty miles above the mouth of the great Kanhaway, and a sufficiency at all times for light batteaux and canoes to Fort Pitt. The rapids are in latitude 38° 8'. The inundations of this river begin about the last of March, and subside in July. During these, a first-rate man-of-war may be carried from Louisville to New Orleans, if the sudden turns of the river and the strength of its current will admit a safe steerage. The rapids at Louisville descend about thirty feet in a length of a mile and a half. The bed of the river there is a solid rock, and is divided by an island into two branches, the southern of which is about two hundred yards wide, and is dry four months in the year. The bed of the northern branch is worn into channels by the constant course of the water, and attrition of the pebble stones carried on with that, so as to be passable for batteaux through the greater part of the year. Yet it is thought that the southern arm may be the most easily opened for constant navigation. The rise of the waters in these rapids does not exceed ten or twelve feet. A part of this island is so high as to have been never overflowed, and to command the settlement at Louisville, which is opposite to it. The fort, however, is situated at the head of the falls. The ground on the south side rises very gradually. The _Tennessee_, Cherokee, or Hogohege river, is six hundred yards wide at its mouth, a quarter of a mile at the mouth of Holston, and two hundred yards at Chotee, which is twenty miles above Holston, and three hundred miles above the mouth of the Tennessee. This river crosses the southern boundary of Virginia, fifty-eight miles from the Mississippi. Its current is moderate. It is navigable for loaded boats of any burden to the Muscle shoals, where the river passes through the Cumberland mountain. These shoals are six or eight miles long, passable downwards for loaded canoes, but not upwards, unless there be a swell in the river. Above these the navigation for loaded canoes and batteaux continues to the Long island. This river has its inundations also. Above the Chickamogga towns is a whirlpool called the Sucking-pot, which takes in trunks of trees or boats, and throws them out again half a mile below. It is avoided by keeping very close to the bank, on the south side. There are but a few miles portage between a branch of this river and the navigable waters of the river Mobile, which runs into the Gulf of Mexico.