So it's not in Digitrad (I looked). Here are the lyrics:
Copyright 1950 by Bob Schmertz
She was born in an old Menessan alley,
Her ma and her pa they called her "Sal."
She grew up to be the pride of the valley,
A typical Monongahela gal.
Roll on, roll on, Monongahela.
Roll on past the Ohio.
Roll on past Alequippa (pron. "Alequippi")
Down to the Mississippi,
Clear to the Gulf of Mexico.
Sal wandered one day by the river,
And there she saw the "Jason" steaming by.
Her heart gave a leap and a quiver,
When she caught that handsome pilot's roving eye.
His name, you must know, was Moat Stanley,
And he wore a fancy sportin' coat.
He was tall, dark and handsome, and manly,
Slickest pilot ever steered a boat.
Moat gave a "toot" on the whistle,
And the Jason churned water at her stern,
And Sal, stepping light as a thistle,
Reached up and took Moat Stanley's hand in her'n.
It was love, careless love, by the river.
Love, careless love by the shore.
And I'm sure the good Lord will forgive her,
'Cause she never knew what love was like before.
He swore that he always would love her,
As they locked through that old Ensworth Dam,
But that night, overboard he did shover her,
And then Moat Stanley took it on the lam.
Now, no one could say Sal was sickly,
She didn't even take time out to bawl.
She just high-tailed it right down for Sewickly,
Slappin' out a fast Australian crawl.
She hopped a fast freight to Rochester,
And there she saw the Jason close to shore.
Froma yard-bull who tried to molest her,
She up and swiped a number forty-four.
Slowly raising that bib shooting iron,
She pumped six bullets into Moat.
And when she laid down that revolver,
She had sure messed up that fancy sportin' coat.
** The original chorus changed between verses, and I think may have been sung more times than I sing it. Some of the changes were topical, and I still sing one of 'em, but the others have gotten lost from my version. The one I DO sing:
So roll on, roll on, Monongahela.
Where the catfish and the carp left long ago.
You used to be so pure, but now you're just a sewer,
Messin' up the Gulf of Mexico.
That's all I recall, and it's lots more interesting with the guitar part I cribbed off of Mike Rivers.