River News - Bad News - We learn that the dam at Lock #1 on the Kentucky River - the first lock above the mouth - was washed away last Friday by a freshet caused by the sudden swelling of the streams tributary to the Kentucky below this city.  This unexpected casualty will lead to the suspension of navigation in this river for several months - that is, until the dame is replaced, which, we understand will take five or six months.  We are glad to learn that all our coal dealers have on hand a good supply of coal, and that, therefore, this suspension of navigation will not be likely to cause an advance in the price of that so far not wholly indispensable article.  It is just possible, too, that there may be a big rise in the Ohio, causing backwater above the first Lock, in which case navigation would be temporarily, at least, resumed.