Yes there are bottles there, will you be able to get them, probably not. Bottle from the era you're talking about were pretty heavy and sank rapidly. I doubt they've moved much but if one did happen to roll a few miles down river I'm not sure it would be worth finding.
I have one too I found in a zero visibility river where few if any divers go, should I of left it? All wrecks in salt water are in a constant state of degradation and in a lifetime will be literally nothing but rust and brass and glass. Storms will then toss that around. People have always...