Traffic on the river had been established as early as December, 1852. Capt. Geo. A. Johnston, an early steamboat pilot, ferried the Beale party, in January, 1858, near where Fort Mohave later was established. Johnston made several trips far up the river with the Jesup and with a newer steamer, the Colorado. He is understood to have gone even farther than Lieut. J. C. Ives, of the Topographical Corps, in the little steamer Explorer. This stern-wheeler made the trip in January, 1858, and was passed by Johnston on his way downstream. The river was at low stage and the Explorer butted into snags and muddy banks continually. Finally there was disaster when Black Canyon was reached, when the boat ran upon a sunken rock. Ives rowed as far up as Vegas Wash. In 1866, the Arizona Legislature, at Prescott, by resolution thanked "Admiral" Robert Rogers, commander of the steamer Esmeralda, and Capt. William Gilmore, for the successful accomplishment of the navigation of the Colorado River to Callville, "effected by the indomitable energy of the enterprising Pacific and Colorado Navigation Co.," a concern managed by Thos. E. Trueworthy, an experienced steamboat man from the Sacramento River of California. Both Arizona and Nevada Legislatures petitioned Congress to improve the stream. Captain Johnston later formed the Colorado Steam Navigation Company and, more or less, controlled the river traffic for years. There were other noted Captains, including C.V. Meeden, Isaac Polhamus, A.D. Johnson, William Poole, S. Thorn, J.H. Godfrey and J.A. Mellen. Captain Mellen told that sometimes schooner barges were used in the lower canyons, where the wind was either upstream or downstream. When it was downstream, the upward-bound craft moored until the breeze changed to astern. The deck hands were Cocopah or Yuma Indians, amphibious, always ready to plunge overboard to help in lightening their craft over any of the numerous sand bars. Mellen told of lying 52 days in one bar and of often being held up for a week. There was no possible mapping of the river channel, for the bars changed from week to week. Even in the earliest times, steamboats were never molested by the Indians. They seemed in awe of the puffing, snorting craft that threw showers of sparks from the smokestacks. Not infrequently, a steamer had to tie up for a few days at a point where fuel conveniently could be cut from the cottonwood or mesquite thickets. In June, the river is at flood, with danger always present in floating trees and driftwood, muddy torrents coming from the melting snows of the Rocky Mountains. In the autumn the river falls, until in places there are mere trickles around the muddy banks. Navigation, perforce, had to be suspended. These were the conditions under which it was proposed to make of the Colorado the great trade artery of the inter-mountain region.