Cochan, (Quechan) last of the stern-wheel steamboats built for the Colorado Steam Navigation Company (CSNC).
In 1899 Issac Polhamus and Jack Mellon owners of the CSNC had to choose one of their remaining steamboats to rebuild to keep up with the competition.
Both the 23-year-old Mohave II and the Gila, with 35 years on the Colorado River, had worn hulls only kept going with a lot of maintenance.
In late 1899 the Gila's machinery was refurbished and its hull rebuilt for $25,000 in the shipyard at Yuma, Arizona.
[2]: 135–160 Just before the completion of the Laguna Dam, some 14 miles above Yuma, ended steam navigation on the lower Colorado River, the Colorado Steam Navigation Company sold its remaining boats including the Cochan to the United States Reclamation Service in 1909.