ALLEGHANY, Allegheny, or Allegany Mountains, is the name often given to the Appalachian Mountains in the United States. A more exact use of the name restricts it to the portion of the system that lies west of the Hudson river, and forms the watershed of the Mississippi basin on the south-east. See Appalachian Mountains.
ALLEGHANY, a river of the United States, which rises in the north of Pennsylvania, and after flowing about 300 miles, first in a northerly, but for the greater part of its course in a westerly direction, during which it passes for a short distance into the state of New York, unites with the Monongahela at Pittsburg to form the Ohio. The country through which it flows is mostly hilly, and large numbers of pines, white oaks, and chestnuts grow upon its banks. It is navigable for small steamers for about 200 miles above Pittsburg.
[55 words — estimated reading time: 1 minute]
