Statistics for occurrence #1 of “Ohio river” in chapter 3 of Col. Robert White, Confederate Military History, a library of Confederate States Military History: Volume 2.2, West Virginia:

...e service, fell in a skirmish at McCoy's mill, November 14th, after which Floyd took position on Piney creek. Previous to this Colonel Clarkson with the cavalry had been sent on a raid toward the Ohio river , and that gallant officer at Guyandotte, November 10th, attacked a body of recruits for a Federal regiment, called the Ninth Virginia, U. S. A., killing a considerable number, and taking 70 prisoners...
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