Colorado, was a stern-wheel paddle-steamer, the third steamboat on the Colorado River, and first stern-wheel steamboat put on that river, in December 1855. The Colorado was a 120 food long, stern-wheel steamboat, built for the George A. Johnson & Company in San Francisco by John G. North a well known builder of steamboats in California. It was equipped with an 80-horsepower steam engine capable of carrying up to 70 tons of cargo while drawing only 2 feet of water. North subsequently disassembled and shipped in sections by sea to the estuary of the Colorado River. There North unloaded, reassembled and launched in it in December, 1855 under the command of Captain Isaac Polhamus. More powerful than Johnson's first steamboat, the side-wheeler General Jesup, it made faster runs between the estu