Hey all,
trying to add a little " proof " to the tale. I recently found some interesting history from the bancroft collection. It basically says that in the 1543 ( I think ) that a Captain Alarcon sailed up the Colorado River and may have made it up to just before or after the Gila junction.
"Before turning back Alarcon says he passed a place
where the river flowed between high mountains; he
states also that he went eighty-five leagues which
may mean any distance from 100 to 250 miles up
the river; and further that he advanced four degrees
beyond the latitude reached by Ulloa. The mountain
pass with a medium estimate of distance would seem
to indicate a part of the Colorado above the Gila and
below Bill Williams Fork; but Melchor Diaz found
Alarcon s letters two months later at a distance which
he estimated to be only fifteen leagues from the
mouth, so that if these were the only letters deposited,
Alarcon s statement of distance is grossly exagger
ated. It may also be noted that he mentions no
stream corresponding to the Gila, as he would natu
rally have done had he passed its mouth. 30
The name Buena Guia was given to the river from
a part of the motto on Mendoza s coat-of-arms, and
on the shore, near the mouth, at a place called La
Gruz, a kind of chapel was built and dedicated to
Our Lady of Buena Guia, The return was in Octo
ber or November probably, and the fleet touched at
several points on the coast during the voyage south
ward. At the port of Colima, probably Natividad, 31
Pedro cle Alvarado was found with his fleet. He
attempted to exercise some authority over Alarcon,
who, after delivering to Luis de Castilla and Agustin
Guerrero his narrative of the voyage, 82 sailed away in
the darkness of the night "to avoid scandal"."
( Bancroft works vol15 history of Northern Mexico states section 89 )
If you look at the chart from the arche's this " should " be a low watertime, and if in a low watertime one can make nearly to Yuma. Then just how far can one go 70 years later during a high watertime

Any thoughts on this
PLL