San Buenaventura River

Escalante could have reached [Great Salt Lake]  in less than two days’ travel and that he did not make the journey is inexplicable. It is all the more so because, as Miera’s report makes certain, the Indians said, or were understood to say, that a very large and navigable river flowed west from it, and surely their first duty was to explore any such river as a possible route to Monterey. Miera thought it must be the Tizon, which he believed Ofiate had discovered and named; but Tizon was Melchior Diaz’s name for the Colorado. When he drew his map he showed it flowing west from the larger lake—and so created a cartographer’s myth, for later maps would show just such a river flowing out of Great Salt Lake to the Pacific and would give it the name that Escalante had given Green River, the San Buenaventura.